From: Savageduck <savageduck1@{REMOVESPAM}me.com>
Subject: Re: Cheap SD Cards
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Date: Sat, 18 Nov 2017 09:30:44 -0800
From: Savageduck <savageduck1@{REMOVESPAM}me.com>
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Subject: Re: Cheap SD Cards
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On Nov 18, 2017, PeterN wrote
(in article<oupo8c07ga@news3.newsguy.com>):

> On 11/17/2017 7:25 PM, Savageduck wrote:
> > On Nov 17, 2017, PeterN wrote
> > (in article<oun6h0026ev@news3.newsguy.com>):
> >
> > > On 11/17/2017 11:56 AM, Savageduck wrote:
> > > > On Nov 17, 2017, PeterN wrote
> > > > (in article<oun1590236i@news3.newsguy.com>):
> > > >
> > > > > On 11/16/2017 10:50 PM, Savageduck wrote:
> > > > > > On Nov 16, 2017, PeterN wrote
> > > > > > (in article<oulin401gbs@news3.newsguy.com>):
> > > > > >
> > > > > > >
> > > > > > > Sunday I did a quick sunset shoot. Out of 46 images, several had weird
> > > > > > > colors in unusual portions of the images.
> > > > > >
> > > > > > That shouldn’t be a problem for you. weird colors in unusual portions
> > > > > > of
> > > > > > the images should be right in your wheelhouse. ;-)
> > > > >
> > > > > Not like this:
> > > > > <https://www.dropbox.com/s/4n3mlqf07qwmt10/_DSC7524.NEF?dl=0>
> > > >
> > > > Yup! That looks like a corrupt file issue. As to where that corruption is
> > > > happening one can best surmise that it was the card. However, there can be
> > > > all sorts of causes, mostly due to current, clearing the buffer, and
> > > > writing
> > > > issues. So it would be best to run a check with a known good performing
> > > > card
> > > > to eliminate possible issues with the camera.
> > > >
> > > > What was the brand of the card in question, what was its rating, and which
> > > > camera were you using?
> > >
> > > D800, and a Delkin Black. I complained to Delkin. They are sending me a
> > > reader, and requested that I test the card with that reader. The shot
> > > you see is a ten shot multiple exposure. I was testing to see how much
> > > time was needed between shots, to get a similar effect to a long
> > > exposure. despite the corruption, my conclusion is that it can be done.
> > > In a calm bay it takes about 2.5 seconds between each shot, for a ten
> > > shot exposure.
> >
> > What is a Delkin Black?
> >
> > Delkin Black is meaningless, all that tells us is who the manufacturer is.
> > What is the actual read/write speed of the card?
> >
> > Also, because you have somewhat explained what you were doing with multiple
> > exposures, I suspect that this was just a slow card choking on what was
> > being
> > fed it, and unable to clear the camera buffer. I have a feeling that if you
> > just used it to shoot a single exposure there might be no problem at all. If
> > you are going to use a high performance camera, you should use high
> > performance cards regardless of how tempting it might be to go the budget
> > card route.
> Google is your friend:
> <https://www.delkindevices.com/product/black-memory-cards/>

....and you have yet to tell us what the actual rating is. Google does not 
tell us what is printed on the SD card in your possession.
Which of these Black cards did you buy?

-- 

Regards,
Savageduck