Rick, I think Godfrey may well be on to the problem. The card contacts
in the camera may be a bit grimy. Plastering an SS card with one of
those electronic cleaning agents (Like Spanjaard LektroKleen) & putting
it in and out a few times may help. I have solved USB contact problems
like that.
Alan C
On 04-Sep-22 09:23 PM, Rick Womer wrote:
Progress so far:
- Tested all 4 SD cards.
One occasionally lost its connection to the camera when I wiggled it, and
another seemed to fit loosely in the slot and its connection seemed unreliable.
I threw them away and ordered 4 new cards from B&H.
Rick
On Sep 4, 2022, at 12:58 PM, John Francis <[email protected]> wrote:
On Sun, Sep 04, 2022 at 11:01:30AM -0400, Rick Womer wrote:
Last spring we took a walk in Morris Arboretum, where the spring blossoms
offered lots of photographic fodder. Alas, when I got home, the card had
thumbnail JPGs on it, but no DNG files. As usual I erased the card (SanDisk
Extreme Pro) in the camera after transferring the files to my computer.
Last week we toured Winterthur, a beautiful DuPont estate about an hour away.
Again I took about a hundred photos. When i put the SD card into the reader, I
got a screen full of thumbnails from Winterthur and the flea market in the
parik a couple of weeks ago, all stirred together (even though the card had
been erased). No DNGs.
I have four SD cards, of which three were indistinguishable until I numbered
them yesterday. I checked each of them with the Mac Disk Utility, and they all
passed.
Any ideas apart from buying a new set of cards? Is there any way to
distinguish a card failure from a camera failure?
Rick
The most obvious reason for a perfectly readable card to contain only JPGs, no
DNGs, is that the camera has somehow got set to only write JPGs. I assume you
checked that, but ...
(Or, depending on which camera body you have, to write JPGs to one card, and
DNGs to a different card)
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