06-27-2026
11:42 AM
- last edited on
06-27-2026
11:47 AM
by
Danny
I have my 5D3 set to record to separate cards. I have #1 CF card set to sRAW & #2 SD set to RAW. I have Record Function set to Record separately, Playback set to card 2. I shot a wedding yesterday and imported both cards to a separate folder thru Adobe Bridge. During processing I noticed differences in dimensions in the same folder. The folder I imported from the CF card had both 5760x3840 & 2880x1920 images. Same thing for the folder with the images from the SD card. I haven't noticed this before & the only thing different I used was a Canon 24-105 F4L lens that I just got which shouldn't matter. I can put all the images in one folder and sort by dimensions and then move each size to another separate folder, which is a pain. Any suggestions on something to look for. Firmware version is 1.3.6. Thank you in advance.
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06-29-2026 10:55 AM
I don't have a real answer either since I haven't experienced it either. I use dual card slot cameras for years upon years. So my stock answer and remedy is a full reset of the 5D Mk III (a fantastic camera). I usually don't suggest a FW update on a malfunctioning but in this case I would try it. You may not be able to if you have the latest FW. And of course the obligatory question, you are using top quality CF and SD cards? And, big 'and', bought from a known good retail outlet. That's not Amazon or eBay or FB Marketplace. These are the simple things that probably won't make any difference but there is a chance and they are easy.
Do the full reset any way!
06-29-2026 01:39 PM
Firmware is 1.3.6. CF is a SanDisk Extreme Pro, SD is SanDisk Ultra Plus. Purchased from Adorama in 2023, I don't remember the exact shutter count, but seems like it was around 35,000 or so. It looked brand new.
I may try the full reset, may wait and see if it does it again. I assume you mean "Clear all camera settings" in the menu. I don't typically do weddings any more, got talked into this one because a relative of my wife. Mostly shooting the grandson's high school/college football games. Yeah, love the 5D3, it replaced my 5D as main. Thanks again for the help.
06-29-2026 02:59 PM - edited 06-29-2026 03:02 PM
“ I have my 5D3 set to record to separate cards. I have #1 CF card set to sRAW & #2 SD set to RAW. I have Record Function set to Record separately, Playback set to card 2. “
” I don't know if some setting got changed (see OP for how I have the recording set) or what happened as it never happened before that I've noticed. Seems to be a head scratcher. “
I think I have solved your mystery. The image sizes are normal. The s-RAW format is a smaller file size with less resolution.
06-29-2026 03:15 PM
"I think I have solved your mystery. The image sizes are normal. The s-RAW format is a smaller file size with less resolution."
Correct, the file size & dimensions are different. The problem remains that RAW & sRAW files shouldn't be on the same card.
06-29-2026 03:41 PM
What you’re seeing is normal. I posted the specs, but somehow the post is on page 1.
06-29-2026 04:00 PM
Are you saying it is normal to have a mixture of RAW & sRAW on each card? I would think that each card would only have the way it is set up, for instance CF - only RAW, SD - only s-RAW.
06-29-2026 05:08 PM - edited 06-29-2026 05:15 PM
“ I have my 5D3 set to record to separate cards. I have #1 CF card set to sRAW & #2 SD set to RAW. “
“ Are you saying it is normal to have a mixture of RAW & sRAW on each card?
During processing I noticed differences in dimensions in the same folder. The folder I imported from the CF card had both 5760x3840 & 2880x1920 images. Same thing for the folder with the images from the SD card. “
Where did you get that idea? I am only trying to tell you that the reduced image resolution for sRAW is normal.
06-29-2026 05:19 PM
I suggest that you reset your camera.
06-29-2026 07:01 PM
Well I happened to stumble on the reason by accident. The C1, C2, & C3 settings all showed the CF set to sRAW and the SD card set to RAW. When set to M the CF is set to RAW & the SD is set to sRAW. Checked and if using Av, Tv, or P the CF is set to RAW and the SD to sRAW. I switched a few times between shooting Manual and using C1, C2, or C3. I went back at the images and looked and the exif and it matches the changes.
At some point back in time I had the CF set to sRAW and registered C1. After that I'm guessing I used it as a base for C2 and C3. After I switched the CF to RAW and the SD to sRAW the C1, C2, C3 kept the original settings of the way I had the cards to shoot.
06-29-2026 07:28 PM
Thank you for posting the resolution.
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