Corrupt RAW files from EOS R

Every now and again my EOS R produces a corrupt RAW file, shooting direct to a Sony G Series 64GB card, which is only apparent when imported into C1. I copy the images onto my HD using PhotoMechanic.  Is this a sign of a failing camera, or just dumb luck?  I had one of my original 5D's do this regularly, 14 years ago, and Canon swapped it.

PhotoDM wrote:

Every now and again my EOS R produces a corrupt RAW file, shooting direct to a Sony G Series 64GB card, which is only apparent when imported into C1. I copy the images onto my HD using PhotoMechanic. Is this a sign of a failing camera, or just dumb luck? I had one of my original 5D's do this regularly, 14 years ago, and Canon swapped it.

If I understood correctly, you only use a single card? If so, maybe it's worth a try to first eliminate the chance of this being a problem with the card itself. If you have no need for an another large card, just some small-capacity cheap card should be fine. Or maybe you know someone who can borrow a card that is known to work?

PhotoDM wrote:

Every now and again my EOS R produces a corrupt RAW file, shooting direct to a Sony G Series 64GB card, [..]

Is your card one of these https://petapixel.com/2020/06/15/sony-product-advisory-these-popular-sd-cards-can-corrupt-your-footage/ ?

PhotoDM wrote:

Thanks - I will try this. I have another identical Sony card, and also a Sandisk Extreme, so I will do some testing.

don, t forget to format the card in the camera you use 👍

How are you transferring the pics to your computer?

Hi all, reaching out to the canon communtiy to see if any one else out there with a EOS R has had corrupt files from the camera. I have had this R for the last 18months, this is the 2nd time it has happened to me.

Last friday i did a shoot, no issues. On sunday doing a product shoot i popped back in the extreme pro 64gb SD card and formatted in camera as i always do. began the shoot no issues, i could zoom in and check out photos as i was shooting.
Loaded up the photos from the shoot to my workstation via lexar card reader, the first thing i noticed was the quantiy of shots to be transeferred.way more than the product shoot i just completed. When i opened the folder on my WS with adobe bridge i could see all of the previous friday shoot had re uploaded but no preview of prioduct shoot. Tried to open the product shots with PS, not a valid format! tried with capture one 20, no joy either.

I noticed the file numbers were skewed. The canon R obviously didnt format the card even though i hit the button, the product shots on sunday were actually numbered before the numbers of the previous friday shoot and ran right up to the first file number of fridays shoot.

I had to re shoot the products, pain in the ass but not the end of the world. But what if this was a job i couldnt re shoot? this is the 2nd time in a few months that this has happend to me. The first time i put it down to something stupid i had done and didnt think too much about it. This time round i have documented it.

The thought of heading out on a shoot where you just dont get time to double check every time you put in a card, formatt it and then take a shot and double check the file numebr is continuous and then you are good to go!

Is it possible that i am the only canon R user with this issue? Have i reached out to canon CPS of which i am a member, yes. do i want to embarress them by publicing their response. Not just yet but i am begining to question my decision to stick with canon when so many of my colleagues have left for other mirrowless brands.

Marco Nero? if you see this post and had time i would appreciate your feedback.

thanks. mike

Michael Mul wrote:

Hi all, reaching out to the canon communtiy to see if any one else out there with a EOS R has had corrupt files from the camera. I have had this R for the last 18months, this is the 2nd time it has happened to me.

It is almost certainly a memory card issue.  If you want to be extra careful you could update your R firmware or do a full factory reset.

Last friday i did a shoot, no issues. On sunday doing a product shoot i popped back in the extreme pro 64gb SD card and formatted in camera as i always do.

Quick or Full format?

began the shoot no issues, i could zoom in and check out photos as i was shooting.
Loaded up the photos from the shoot to my workstation via lexar card reader, the first thing i noticed was the quantiy of shots to be transeferred.

Then again, maybe a card reader issue.  Did you try another?

way more than the product shoot i just completed. When i opened the folder on my WS with adobe bridge i could see all of the previous friday shoot had re uploaded but no preview of prioduct shoot. Tried to open the product shots with PS, not a valid format! tried with capture one 20, no joy either.

I noticed the file numbers were skewed. The canon R obviously didnt format the card even though i hit the button, the product shots on sunday were actually numbered before the numbers of the previous friday shoot and ran right up to the first file number of fridays shoot.

I had to re shoot the products, pain in the ass but not the end of the world. But what if this was a job i couldnt re shoot? this is the 2nd time in a few months that this has happend to me. The first time i put it down to something stupid i had done and didnt think too much about it. This time round i have documented it.

You're going to have to conduct some controlled experiments here.  Format it in your computer.  Use your R as a card reader.  Try something different to isolate your issue.  Don't use Adobe Bridge to transfer....just copy/paste from File Manager.

Do you have another card?

The thought of heading out on a shoot where you just dont get time to double check every time you put in a card, formatt it and then take a shot and double check the file numebr is continuous and then you are good to go!

Is it possible that i am the only canon R user with this issue?

Sure, it's possible.  But you've got several links in the chain here and you need to determine which one is broken.

Have i reached out to canon CPS of which i am a member, yes. do i want to embarress them by publicing their response. Not just yet but i am begining to question my decision to stick with canon when so many of my colleagues have left for other mirrowless brands.

This doesn't sound like an R problem.

Marco Nero? if you see this post and had time i would appreciate your feedback.

Marco doesn't know anything about RAW shooting.  And if you want his feedback why don't you send him a private message with a link and ask him to read?  It seems like maybe you're not terribly technologically savvy?  Is that accurate?

thanks. mike

Thank you Thomas for the logical breakdown, i appreciate you thaking the time out.

I do always do a full format in camera when begining a new shoot. The card and the camera appear to be functioned correctly again. I cant replicate the issue so i guess its just a glitch.

Canon did over the last few days engage with me on a more professional level. everyone i have spoken to points to a failing SD card. I am sending the card back to SanDisk with the comments from canon tech.

For me though, the card is dumb storage, that is it reads and writes, but it doesnt rename files. the real oddity in this is the file naming confusion which the EOS R suffered.

fridays last file was 9800, on sunday after putting in the same card from fridays shoot and full format in camera, the very first shot from sunday was named 8977.

The file numbers then on sunday ran consecutively right up to the first shot from fridays shoot.

After accepting the files were corrupted and i would have to reshoot sundays work i put back in the card and full format again, the file numbering is back in syn ( added fridays shots and sundays shots ) . everything is as normal.

this from Canon, "Thank you for your update, the camera will set the file numbering depending on the last file saved, if there was a corruption in the index the camera may have misread the last file number and started at a new file number, this is speculation as we cannot confirm this is the case until you test with another card".

maybe i just dont get it. Regardless of the card in camera, The R obviously retains internally the file numering. Did a possibily corrupt card cause the R to confuse iteslf in the file numbering?

thanks again Thomas.

mike