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From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
Date: Thu, 14 Dec 2017 16:48:04 -0000 (UTC)
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Is there an easy way to stop this light scatter sparkling in all my photos
& videos of engine valves. What specifically is causing all the ghosting
and sparkling?

I'm using just a shop light and a mobile phone to video (without flash) and
photograph (with and without flash) an engine problem where all the photos
have this shiny glare no matter what angle I put the light or phone with
respect to the valves - and whether or not I use flash.

https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html

The original thread is here, where it also contains video with the same
problem, but the photos above show the problem enough.
<http://www.bimmerfest.com/forums/showthread.php?t=1181089>

Is there an easy way to stop this light scatter ghosting in all my photos &
videos of engine valves. 

	
From: Paul <nospam@needed.invalid>
Subject: Re: Is there an easy way to stop this light scatter ghosting in allmy photos & videos of engine valves?
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From: Paul <nospam@needed.invalid>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
Date: Thu, 14 Dec 2017 11:54:34 -0500
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Arthur Wood wrote:
> Is there an easy way to stop this light scatter sparkling in all my photos
> & videos of engine valves. What specifically is causing all the ghosting
> and sparkling?
> 
> I'm using just a shop light and a mobile phone to video (without flash) and
> photograph (with and without flash) an engine problem where all the photos
> have this shiny glare no matter what angle I put the light or phone with
> respect to the valves - and whether or not I use flash.
> 
> https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
> https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
> https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
> https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
> https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
> https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
> https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
> https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
> 
> The original thread is here, where it also contains video with the same
> problem, but the photos above show the problem enough.
> <http://www.bimmerfest.com/forums/showthread.php?t=1181089>
> 
> Is there an easy way to stop this light scatter ghosting in all my photos &
> videos of engine valves.

https://www.diyphotography.net/getting-started-with-cross-polarized-...

    Paul 

	
From: Savageduck <savageduck1@{REMOVESPAM}me.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Dec 14, 2017, Paul wrote
(in article <p0uacb$rut$1@dont-email.me>):

> Arthur Wood wrote:
> > Is there an easy way to stop this light scatter sparkling in all my photos
> > &  videos of engine valves. What specifically is causing all the ghosting
> > and sparkling?
> >
> > I'm using just a shop light and a mobile phone to video (without flash) and
> > photograph (with and without flash) an engine problem where all the photos
> > have this shiny glare no matter what angle I put the light or phone with
> > respect to the valves - and whether or not I use flash.
> >
> > https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
> > https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
> > https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
> > https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> > https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
> > https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> > https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
> > https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
> > https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
> > https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
> >
> > The original thread is here, where it also contains video with the same
> > problem, but the photos above show the problem enough.
> > <http://www.bimmerfest.com/forums/showthread.php?t=1181089>
> >
> > Is there an easy way to stop this light scatter ghosting in all my photos &
> > videos of engine valves.
>
> https://www.diyphotography.net/getting-started-with-cross-polarized-...
>
> Paul

Nope! This isn’t a problem that polarizer filters will fix. This is a case 
where a light diffuser, or reflector is needed.

-- 

Regards,
Savageduck 

	
From: Savageduck <savageduck1@{REMOVESPAM}me.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Dec 14, 2017, Arthur Wood wrote
(in article <p0ua03$mcf$1@news.mixmin.net>):

> Is there an easy way to stop this light scatter sparkling in all my photos
> &  videos of engine valves. What specifically is causing all the ghosting
> and sparkling?
>
> I'm using just a shop light and a mobile phone to video (without flash) and
> photograph (with and without flash) an engine problem where all the photos
> have this shiny glare no matter what angle I put the light or phone with
> respect to the valves - and whether or not I use flash.
>
> https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
> https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
> https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
> https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
> https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
> https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
> https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
> https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
>
> The original thread is here, where it also contains video with the same
> problem, but the photos above show the problem enough.
> <http://www.bimmerfest.com/forums/showthread.php?t=1181089>
>
> Is there an easy way to stop this light scatter ghosting in all my photos &
> videos of engine valves.

It looks to me as though your problem lies with the shop light. You will 
never solve this problem photographically by using such undiffused harsh 
lighting, but that is easily solved. You could go the expensive route by 
using specialized photographic diffusers, or reflectors, or you can adapt 
your shop light by placing a diffuser sheet between the light and your 
subject. A search on Amazon for light diffuser, or diffuser sheet will expand 
those options.

Here is more for you to read:
<https://en.wikipedia.org/wiki/Diffuser_(optics)>
<https://diffuserspecialist.com/fluorescent-light-diffuser-products/f...
sheet-light-diffuser-panels/>
<http://www.instructables.com/id/10-Minute-Light-Diffuser/>
<https://www.inventables.com/technologies/light-diffuser-film-rolls&g...

-- 

Regards,
Savageduck 

	
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From: nospam <nospam@nospam.invalid>
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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In article<0001HW.1FE2E7A7007F500070000E6232CF@news.giganews.com>,
Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> > Is there an easy way to stop this light scatter ghosting in all my photos &
> > videos of engine valves.
> 
> It looks to me as though your problem lies with the shop light. 

be advised who the poster actually is. 

	
From: Savageduck <savageduck1@{REMOVESPAM}me.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Dec 14, 2017, nospam wrote
(in article<141220171226092885%nospam@nospam.invalid>):

> In article<0001HW.1FE2E7A7007F500070000E6232CF@news.giganews.com>,
> Savageduck <savageduck1@{REMOVESPAM}me.com>  wrote:
>
> > > Is there an easy way to stop this light scatter ghosting in all my photos &
> > > videos of engine valves.
> >
> > It looks to me as though your problem lies with the shop light.
>
> be advised who the poster actually is.

I thought that it might be our pal from the hills above San Jose, but the 
question seemed to be benign enough to respond.

This did not appear to be an OS troll.

-- 

Regards,
Savageduck 

	
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From: nospam <nospam@nospam.invalid>
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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In article<0001HW.1FE2F10C008183B270000E6232CF@news.giganews.com>,
Savageduck <savageduck1@{REMOVESPAM}me.com> wrote:

> > > > Is there an easy way to stop this light scatter ghosting in all my
> > > > photos & videos of engine valves.
> > >
> > > It looks to me as though your problem lies with the shop light.
> >
> > be advised who the poster actually is.
> 
> I thought that it might be our pal from the hills above San Jose, but the 
> question seemed to be benign enough to respond.

the first part is correct, the second is debatable. any attempt to
teach him lighting technique will turn into the usual idiocy.

> This did not appear to be an OS troll.

but yet a troll nonetheless. 

	
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From: PeterN <"peter,newdelete"@deleteverizon.net>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
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On 12/14/2017 12:49 PM, Savageduck wrote:
> On Dec 14, 2017, nospam wrote (in
> article<141220171226092885%nospam@nospam.invalid>):
> 
>> In article<0001HW.1FE2E7A7007F500070000E6232CF@news.giganews.com>, 
>> Savageduck <savageduck1@{REMOVESPAM}me.com>  wrote:
>> 
>>>> Is there an easy way to stop this light scatter ghosting in all
>>>> my photos & videos of engine valves.
>>> 
>>> It looks to me as though your problem lies with the shop light.
>> 
>> be advised who the poster actually is.
> 
> I thought that it might be our pal from the hills above San Jose, but
> the question seemed to be benign enough to respond.
> 
> This did not appear to be an OS troll.
> 


Regardless of whether the poster is a troll, I see it as a legitimate 
question. I think that your answer is a good response to a real problem. 
Some here may have encountered it and you provided an answer that would 
help them.
-- 
PeterN 

	
From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
Date: Fri, 15 Dec 2017 06:18:42 -0000 (UTC)
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PeterN wrote:

>  I think that your answer is a good response to a real problem. 
> Some here may have encountered it and you provided an answer that would 
> help them.

I see the solution is a "diffuser" but what's the "problem".
What I mean by that is why does the light look like it's raining?

For whatever reason, it's like "sleet" at a 45 degree angle.
Where is all that "sleet" of light coming from?

And why always a 45-degree angle?
I assumed that some "physics" principle is being invoked.

No matter how I held the camera, I still got a 45-degree "sleet" of light.

Take this one example from far away:
https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html

Compared with this at 90 degrees:
https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html

Compared with this at a closeup:
https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html

All have this "sleet" of light at the same angle.

Why the 45-degree "sleet" angle in /all/ the photos?

I realize the /solution/ is a diffuser but what's the physics problem?
Is there a physics principle that causes the always 45 degree sleet? 

	
From: Ken Hart <kwhart1@frontier.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in allmy photos & videos of engine valves?
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From: Ken Hart <kwhart1@frontier.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
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On 12/15/2017 01:18 AM, Arthur Wood wrote:
> PeterN wrote:
> 
>>   I think that your answer is a good response to a real problem.
>> Some here may have encountered it and you provided an answer that would
>> help them.
> 
> I see the solution is a "diffuser" but what's the "problem".
> What I mean by that is why does the light look like it's raining?
> 
> For whatever reason, it's like "sleet" at a 45 degree angle.
> Where is all that "sleet" of light coming from?
> 
> And why always a 45-degree angle?
> I assumed that some "physics" principle is being invoked.
> 
> No matter how I held the camera, I still got a 45-degree "sleet" of light.
> 
> Take this one example from far away:
> https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> 
> Compared with this at 90 degrees:
> https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> 
> Compared with this at a closeup:
> https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
> 
> All have this "sleet" of light at the same angle.
> 
> Why the 45-degree "sleet" angle in /all/ the photos?
> 
> I realize the /solution/ is a diffuser but what's the physics problem?
> Is there a physics principle that causes the always 45 degree sleet?
> 

Is it possible that your lens is dirty, possibly with some sort of oil- 
skin or otherwise?

-- 
Ken Hart
kwhart1@frontier.com 

	
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From: PeterN <"peter,newdelete"@deleteverizon.net>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
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On 12/15/2017 1:18 AM, Arthur Wood wrote:
> PeterN wrote:
> 
>>   I think that your answer is a good response to a real problem.
>> Some here may have encountered it and you provided an answer that would
>> help them.
> 
> I see the solution is a "diffuser" but what's the "problem".
> What I mean by that is why does the light look like it's raining?
> 
> For whatever reason, it's like "sleet" at a 45 degree angle.
> Where is all that "sleet" of light coming from?
> 
> And why always a 45-degree angle?
> I assumed that some "physics" principle is being invoked.
> 
> No matter how I held the camera, I still got a 45-degree "sleet" of light.
> 
> Take this one example from far away:
> https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> 
> Compared with this at 90 degrees:
> https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> 
> Compared with this at a closeup:
> https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
> 
> All have this "sleet" of light at the same angle.
> 
> Why the 45-degree "sleet" angle in /all/ the photos?
> 
> I realize the /solution/ is a diffuser but what's the physics problem?
> Is there a physics principle that causes the always 45 degree sleet?
> 

The Duck gave you a pretty good practical resolution. To e e it looks 
like a point source lighting problem. u.e. your lens resolving power is 
insufficient. Diffusion breaks up the point source lightning,

IOW Mathematically an object may be considered a point source if its 
angular size, is much smaller than the resolving power of the lens:
Ether  diffusion, or a lens with higher resolving power should solve 
your problem






-- 
PeterN 

	
From: Eric Stevens <eric.stevens@sum.co.nz>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Eric Stevens <eric.stevens@sum.co.nz>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Thu, 14 Dec 2017 16:48:04 -0000 (UTC), Arthur Wood<arthurwood@bimmerfest.com> wrote:

>Is there an easy way to stop this light scatter sparkling in all my photos
>& videos of engine valves. What specifically is causing all the ghosting
>and sparkling?
>
>I'm using just a shop light and a mobile phone to video (without flash) and
>photograph (with and without flash) an engine problem where all the photos
>have this shiny glare no matter what angle I put the light or phone with
>respect to the valves - and whether or not I use flash.
>
>https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
>https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
>https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
>https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
>https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
>https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
>https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
>https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
>https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
>https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
>
>The original thread is here, where it also contains video with the same
>problem, but the photos above show the problem enough.
><http://www.bimmerfest.com/forums/showthread.php?t=1181089>
>
>Is there an easy way to stop this light scatter ghosting in all my photos &
>videos of engine valves.

I think you mean cams rather than valves.

It looks to me as though the highlighted parts give rise to a strak of
light at an angle to the frame of the image. In some of the shots
(e.g. bay 10) streaks can be seen emenating from highlights other than
the cams. I suspect the problem may be due to a smear on the camera
lens. I suggest you try it with another camera.
-- 

Regards,

Eric Stevens 

	
From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
Date: Fri, 15 Dec 2017 06:23:18 -0000 (UTC)
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Eric Stevens wrote:

> I think you mean cams rather than valves.
> 
> It looks to me as though the highlighted parts give rise to a strak of
> light at an angle to the frame of the image. In some of the shots
> (e.g. bay 10) streaks can be seen emenating from highlights other than
> the cams. I suspect the problem may be due to a smear on the camera
> lens. I suggest you try it with another camera.

You are correct in noticing that all the streaks of light are at the same
45 degree angle no matter how the camera is held.

That's why I think it may be some "physics" principle involved.

There are many other photos taken with the same camera but under daylight
lighting where these streaks do not happen so it's not the camera.

Some of those photos are here.
http://www.bimmerfest.com/forums/showthread.php?t=1181089

And here:
http://www.bimmerfest.com/forums/showthread.php?t=1181289

So it's not the camera or the lens except under those lighting conditions.

I was assuming there is something weird in the physics of the lighting that
causes those sleet like streaks always at 45 degree angles and far from
being a mere reflection. 

	
From: Eric Stevens <eric.stevens@sum.co.nz>
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Fri, 15 Dec 2017 06:23:18 -0000 (UTC), Arthur Wood<arthurwood@bimmerfest.com> wrote:

>Eric Stevens wrote:
>
>> I think you mean cams rather than valves.
>> 
>> It looks to me as though the highlighted parts give rise to a strak of
>> light at an angle to the frame of the image. In some of the shots
>> (e.g. bay 10) streaks can be seen emenating from highlights other than
>> the cams. I suspect the problem may be due to a smear on the camera
>> lens. I suggest you try it with another camera.
>
>You are correct in noticing that all the streaks of light are at the same
>45 degree angle no matter how the camera is held.
>
>That's why I think it may be some "physics" principle involved.
>
>There are many other photos taken with the same camera but under daylight
>lighting where these streaks do not happen so it's not the camera.
>
>Some of those photos are here.
>http://www.bimmerfest.com/forums/showthread.php?t=1181089
>
>And here:
>http://www.bimmerfest.com/forums/showthread.php?t=1181289
>
>So it's not the camera or the lens except under those lighting conditions.
>
>I was assuming there is something weird in the physics of the lighting that
>causes those sleet like streaks always at 45 degree angles and far from
>being a mere reflection.

OK. That's one possibility eliminated.
-- 

Regards,

Eric Stevens 

	
From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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Eric Stevens wrote:

> OK. That's one possibility eliminated.

It's not the camera or the lens other than it's a "property" of them under
those lighting conditions.

The weird thing was the streaks of light are huge. They're not just
reflections. And they are at the same angle for /all/ objects, and they're
long. They go halfway through the photo.

It's like it was sleeting at the time and the light reflected off the
sleet.

I knew a point source of light was a bad idea (actually my shop lights are
pretty good in that they're a classic photography aluminum cone with clamps
on one end and the opening is huge - about 8 or 9 inches - which are actual
photography lights I bought at a garage sale decades ago.

The weird thing was the sleet across the entire photo which couldn't have
been a reflection because they were all at the same angle. There's
something in the physics involved of the way cameras work that caused those
huge streaks of sleet.

PS: To be called a troll for asking this question is kind of ridiculous. 

	
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In article <p10ndp$ngc$1@news.mixmin.net>, Arthur Wood<arthurwood@bimmerfest.com> wrote:

> 
> PS: To be called a troll for asking this question is kind of ridiculous.

you're called a troll because of your extensive history being one. 

	
From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
Date: Fri, 15 Dec 2017 18:33:05 -0000 (UTC)
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nospam wrote:

> you're called a troll because of your extensive history being one.

It's a legitimate question.
Yours are all trolls.

plonk 

	
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On 12/15/2017 3:56 AM, Eric Stevens wrote:
> On Fri, 15 Dec 2017 06:23:18 -0000 (UTC), Arthur Wood
><arthurwood@bimmerfest.com> wrote:
> 
>> Eric Stevens wrote:
>>
>>> I think you mean cams rather than valves.
>>>
>>> It looks to me as though the highlighted parts give rise to a strak of
>>> light at an angle to the frame of the image. In some of the shots
>>> (e.g. bay 10) streaks can be seen emenating from highlights other than
>>> the cams. I suspect the problem may be due to a smear on the camera
>>> lens. I suggest you try it with another camera.
>>
>> You are correct in noticing that all the streaks of light are at the same
>> 45 degree angle no matter how the camera is held.
>>
>> That's why I think it may be some "physics" principle involved.
>>
>> There are many other photos taken with the same camera but under daylight
>> lighting where these streaks do not happen so it's not the camera.
>>
>> Some of those photos are here.
>> http://www.bimmerfest.com/forums/showthread.php?t=1181089
>>
>> And here:
>> http://www.bimmerfest.com/forums/showthread.php?t=1181289
>>
>> So it's not the camera or the lens except under those lighting conditions.
>>
>> I was assuming there is something weird in the physics of the lighting that
>> causes those sleet like streaks always at 45 degree angles and far from
>> being a mere reflection.
> 
> OK. That's one possibility eliminated.
> 

I think it's an issue of pint source lighting.

-- 
PeterN 

	
From: Jeff <j@donotspam.me>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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Arthur Wood<arthurwood@bimmerfest.com> wrote in
news:p0vpol$67e$1@news.mixmin.net: 

> Eric Stevens wrote:
> 
>> I think you mean cams rather than valves.
>> 
>> It looks to me as though the highlighted parts give rise to a strak of
>> light at an angle to the frame of the image. In some of the shots
>> (e.g. bay 10) streaks can be seen emenating from highlights other than
>> the cams. I suspect the problem may be due to a smear on the camera
>> lens. I suggest you try it with another camera.
> 
> You are correct in noticing that all the streaks of light are at the
> same 45 degree angle no matter how the camera is held.
> 
> That's why I think it may be some "physics" principle involved.
> 
> There are many other photos taken with the same camera but under
> daylight lighting where these streaks do not happen so it's not the
> camera. 
> 
> Some of those photos are here.
> http://www.bimmerfest.com/forums/showthread.php?t=1181089
> 
> And here:
> http://www.bimmerfest.com/forums/showthread.php?t=1181289
> 
> So it's not the camera or the lens except under those lighting
> conditions. 
> 
> I was assuming there is something weird in the physics of the lighting
> that causes those sleet like streaks always at 45 degree angles and far
> from being a mere reflection.

The "physics" are because the smudge on the lens is at a 45 degree angle. 

	
From: Arthur Wood <arthurwood@bimmerfest.com>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Arthur Wood <arthurwood@bimmerfest.com>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
Date: Fri, 15 Dec 2017 18:32:33 -0000 (UTC)
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Jeff wrote:

> The "physics" are because the smudge on the lens is at a 45 degree angle.

It's not a smudge. I don't know what it is, but it's not a smudge.
I wiped the lens because that's the first thing I had thought also.

Anyways, it doesn't happen on pictures that don't have that lighting
situation, even at the same time.

There's something about the lighting combined with the way cameras work.

This is the light fixture that I use as my mobile shop light. 
https://www.turboimagehost.com/p/36864695/light1.jpg.html

I bought it at a yard sale where it was claimed to be a photography light.
Is that a typical photography light?

Currently it has a curly bulb inside a floodlight fixture (PR-something).
What bulb do you normally put in those photography lights? 

	
From: Carlos E.R. <robin_listas@es.invalid>
Subject: Re: Is there an easy way to stop this light scatter ghosting in allmy photos & videos of engine valves?
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From: "Carlos E.R." <robin_listas@es.invalid>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
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On 2017-12-15 19:32, Arthur Wood wrote:
> Jeff wrote:
> 
>> The "physics" are because the smudge on the lens is at a 45 degree angle.
> 
> It's not a smudge. I don't know what it is, but it's not a smudge.
> I wiped the lens because that's the first thing I had thought also.
> 
> Anyways, it doesn't happen on pictures that don't have that lighting
> situation, even at the same time.
> 
> There's something about the lighting combined with the way cameras work.

Try another camera.

-- 
Cheers, Carlos. 

	
From: Eric Stevens <eric.stevens@sum.co.nz>
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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From: Eric Stevens <eric.stevens@sum.co.nz>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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On Fri, 15 Dec 2017 18:32:33 -0000 (UTC), Arthur Wood<arthurwood@bimmerfest.com> wrote:

>Jeff wrote:
>
>> The "physics" are because the smudge on the lens is at a 45 degree angle.
>
>It's not a smudge. I don't know what it is, but it's not a smudge.
>I wiped the lens because that's the first thing I had thought also.
>
>Anyways, it doesn't happen on pictures that don't have that lighting
>situation, even at the same time.
>
>There's something about the lighting combined with the way cameras work.
>
>This is the light fixture that I use as my mobile shop light. 
>https://www.turboimagehost.com/p/36864695/light1.jpg.html

"Image light1.jpg don`t exist on our server!" - which I find
frustrating as I don't know what everyone else is talking about.
>
>I bought it at a yard sale where it was claimed to be a photography light.
>Is that a typical photography light?
>
>Currently it has a curly bulb inside a floodlight fixture (PR-something).
>What bulb do you normally put in those photography lights?
-- 

Regards,

Eric Stevens 

	
From: Carlos E.R. <robin_listas@es.invalid>
Subject: Re: Is there an easy way to stop this light scatter ghosting in allmy photos & videos of engine valves?
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Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
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On 2017-12-16 06:44, Eric Stevens wrote:
> On Fri, 15 Dec 2017 18:32:33 -0000 (UTC), Arthur Wood
><arthurwood@bimmerfest.com> wrote:



>> This is the light fixture that I use as my mobile shop light. 
>> https://www.turboimagehost.com/p/36864695/light1.jpg.html
> 
> "Image light1.jpg don`t exist on our server!" - which I find
> frustrating as I don't know what everyone else is talking about.

Works fine here, but it is light1.jpg.html. Just a lamp.

-- 
Cheers, Carlos. 

	
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Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
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In article<10jfge-c8t.ln1@Telcontar.valinor>, Carlos E.R.<robin_listas@es.invalid> wrote:

> >> This is the light fixture that I use as my mobile shop light. 
> >> https://www.turboimagehost.com/p/36864695/light1.jpg.html
> > 
> > "Image light1.jpg don`t exist on our server!" - which I find
> > frustrating as I don't know what everyone else is talking about.
> 
> Works fine here, but it is light1.jpg.html. Just a lamp.

it does now, but it didn't last night when he got the error. 

	
Subject: Re: Is there an easy way to stop this light scatter ghosting in allmy photos & videos of engine valves?
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From: PeterN <"peter,newdelete"@deleteverizon.net>
Newsgroups: rec.photo.digital,rec.video.desktop
Subject: Re: Is there an easy way to stop this light scatter ghosting in all
my photos & videos of engine valves?
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On 12/15/2017 1:23 AM, Arthur Wood wrote:
> Eric Stevens wrote:
> 
>> I think you mean cams rather than valves.
>>
>> It looks to me as though the highlighted parts give rise to a strak of
>> light at an angle to the frame of the image. In some of the shots
>> (e.g. bay 10) streaks can be seen emenating from highlights other than
>> the cams. I suspect the problem may be due to a smear on the camera
>> lens. I suggest you try it with another camera.
> 
> You are correct in noticing that all the streaks of light are at the same
> 45 degree angle no matter how the camera is held.
> 
> That's why I think it may be some "physics" principle involved.
> 


Yep. See my answer above, and the formula at
<https://en.wikipedia.org/wiki/Point_source>.






> There are many other photos taken with the same camera but under daylight
> lighting where these streaks do not happen so it's not the camera.
> 
> Some of those photos are here.
> http://www.bimmerfest.com/forums/showthread.php?t=1181089
> 
> And here:
> http://www.bimmerfest.com/forums/showthread.php?t=1181289
> 
> So it's not the camera or the lens except under those lighting conditions.
> 
> I was assuming there is something weird in the physics of the lighting that
> causes those sleet like streaks always at 45 degree angles and far from
> being a mere reflection.
> 


-- 
PeterN 

	
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On 2017-12-14 11:48, Arthur Wood wrote:
> Is there an easy way to stop this light scatter sparkling in all my photos
> & videos of engine valves. What specifically is causing all the ghosting
> and sparkling?
> 
> I'm using just a shop light and a mobile phone to video (without flash) and
> photograph (with and without flash) an engine problem where all the photos
> have this shiny glare no matter what angle I put the light or phone with
> respect to the valves - and whether or not I use flash.
> 
> https://www.turboimagehost.com/p/36857792/engine_bay1.jpg.html
> https://www.turboimagehost.com/p/36857793/engine_bay2.jpg.html
> https://www.turboimagehost.com/p/36857794/engine_bay3.jpg.html
> https://www.turboimagehost.com/p/36857795/engine_bay4.jpg.html
> https://www.turboimagehost.com/p/36857796/engine_bay5.jpg.html
> https://www.turboimagehost.com/p/36857797/engine_bay6.jpg.html
> https://www.turboimagehost.com/p/36857798/engine_bay7.jpg.html
> https://www.turboimagehost.com/p/36857799/engine_bay8.jpg.html
> https://www.turboimagehost.com/p/36857800/engine_bay9.jpg.html
> https://www.turboimagehost.com/p/36857801/engine_bay10.jpg.html
> 
> The original thread is here, where it also contains video with the same
> problem, but the photos above show the problem enough.
> <http://www.bimmerfest.com/forums/showthread.php?t=1181089>
> 
> Is there an easy way to stop this light scatter ghosting in all my photos &
> videos of engine valves.

Haven't read all the replies but my first question would be: is your 
lens impeccably clean?