Subject: Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?
> 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:
Compared with this at 90 degrees:
Compared with this at a closeup:
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?