Mike,

Three of my four cards were indistinguishable, until I numbered them yesterday.

Methinks I will waste some electrons today shooting on each of the cards to see 
if one is faulty.

Rick

> On Sep 4, 2022, at 11:04 AM, mike wilson <m.9.wil...@ntlworld.com> wrote:
> 
> 
>> On 04/09/2022 16:01 Rick Womer <rickpic...@gmail.com> 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
> 
> Try another card?
> 
>> 
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