On 2017-05-04 16:58:21 +0000, PAS said:

On 5/4/2017 12:44 PM, Savageduck wrote:
On 2017-05-04 16:24:13 +0000, Tony Cooper said:

On Thu, 4 May 2017 09:09:26 -0700, Savageduck
wrote:

On 2017-05-04 15:56:57 +0000, Tony Cooper said:


This photo was taken last night on my Nikon D300 using Ch continuous.
Captured on a compact flash card.

https://www.dropbox.com/s/qv51k2snum...03-40.dng?dl=0

Just one of the sequence, and just one of all exposures, has this
problem. Same thing happened before shooting another game.

No loss to me as it wasn't an image I'd use, and other captures are
fine.

I'm wondering, though, if the problem is a compact flash card about to
go or a in-camera problem.

What is the CF card rating, and brand?

How many shots are in each of the sequences with a corrupt file, and
how many in clean sequences?

How old is the CF file?

Where in the sequence is the corrupted file; start, middle, or end?

I suspect that buffer isn't clearing and writing to the CF card fast
enough. It could be the card, it could be the buffer, but my money is
on the card. I would conduct an experiment to see if the problem is
repeatable. Shoot several 2-3 second Ch bursts or until the buffer
stalls, and check.

I would be most suspicious of the CF card and the time might have come
to retire it.

Probably the card. It's a 8gb Pro-Master card. The local camera
store sells this brand. I've had it for two years, but the problem is
very recent.

I have not heard of Pro-Master.

Pro-Master is a brand sold by a consortium of camera stores. Every
product is re-branded. They sold a lot of rebranded lenses over the
years, consumer-level ones. But there were a few good ones that they
sold such as the Tokina 12-24mm AT-X lens.

....and we don't have any idea of the read/write speed of the Pro-Master
CF card.

....and there are always opinions:
https://www.dpreview.com/forums/thread/3268372


As to the problem being recent, is it limited to Ch shooting?

I've got a 2gb SanDisk Extreme III card that I'll switch to after
baseball season. Only one more game in the season.

You need to buy a couple of new CF cards. Go to Amazon and order either
a SanDisk or Lexar CF card with at least a 160 MB/s write speed. Even
that SanDisk Extreme III card is old and with read/write speed of
20MB/s is probably not fast enough to clear the buffer efficiently.

I'm a low volume shooter normally, and even in baseball I seldom shoot
over 150 (RAW) frames. That's the only time I shoot Ch continuous or
Cl continuous.

Just buy at least one faster card now.

I download after every shoot and format the card in-camera.

OK! However, that is not the cause, or a solution for your problem.


--
Regards,

Savageduck