EOS 5D Mark III sRAW and RAW image dimensions are inconsistent

[DWT54]

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.

[jrhoffman75]

Did you follow there's steps?

https://support.usa.canon.com/kb/s/article/ART133785

[DWT54]

Thank you, but I know how to record to separate cards.  The problem is that it would randomly put both RAW & sRAW on both the CF & SD cards.  For instance on the CF card it would have several at the RAW size and then a few at the sRAW size.  It would be just the opposite on the SD card.  As an example the CF would have image 001 at RAW and image 002 at sRAW.  The SD card would have image 001 at sRAW and image 002 at the RAW size.  Hope this helps explain it a little better.

[Waddizzle]

I am betting / guessing that you use a card reader to download your files.  

[DWT54]

Yes, my PC has dedicated CF & SD slots.  I use the Photo Downloader in Adobe Bridge (CS6) to import.  I first imported from the SD card which "should've" only had the RAW sizes, but it had both RAW & sRAW files.

I started over and imported the SD card to a new folder & then the CF card to a separate new folder.  Each contained both RAW & sRAW files.  I ended up putting all the files in one folder, sorting by dimensions, and then moving all the sRAW files to another folder.  It was a pure pain in the butt. 

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.

[shadowsports]

Are you swapping cards during shooting and closing the memory card door with the camera powered on?  

[DWT54]

No.  Both cards were formatted the morning of and the memory card door not opened until got home to import.  Did not change lenses, only used the Canon 24-105 f4L & Canon 580 EXII. 

For giggles I decided to look at the SD card on another PC (did not import, only looked at file explorer).  Here is how the images recorded.

sRAW - 6948-6958, 6982-6988, 6995-7003, 7006-7021, 7090-7304.

RAW - 6959-6981, 6989-6994, 7004-7005, 7022-7089, 7305-7343.

No rhyme or reason that I can see.

[jrhoffman75]

That was my thought. 

[jrhoffman75]

Strange. It’s not the first time someone has posted about this. I have never seen an explanation. I’ve had dual card cameras since 2005 and never personally experienced it. 

[DWT54]

I got the 5D3 used a couple of years ago and mainly have shot my grandson's football games since.  Stopped doing weddings/etc 6-7 years ago.  Got talked into this one since it was a relative of my wife.

I think I'll just chalk it up to "cosmic coincidence". 😃

Thanks for all the replies trying to help!