1D Mark IV Shutter Count at RAW file offset 2236?

I'm a hacker at heart and just happen to enjoy photography. After getting my 1D Mark IV, I was disappointed by the lack of "open" information available about the shutter count. Seems everyone wants you to submit a file (which is great), but I want to know what goes on behind the scenes.

Can someone check me on this? Looking at a raw .CR2 photo, I can see offset 2236 (0x8BC) increment for each photo I take. It appears to be 0-based (ie, one less than the shutter count). The BIG question is: is this just the file sequence number (which can be reset), or is it the shutter count? The obvious answer is, just reset your camera's sequence number and look again at offset 2236, but right now, that's the only way I have to track my shutter count (since I've never reset my file sequence number).

So...can someone who doesn't mind resetting their file sequence numbering on a 1D Mark IV try this and tell me what it does to the next .CR2 file offset 2236 value??

FYI: XVI32 is a good hex editor

MarkivAntony wrote in post #12907155
So...can someone who doesn't mind resetting their file sequence numbering on a 1D Mark IV try this and tell me what it does to the next .CR2 file offset 2236 value??

Umm...why don't you do it with your camera and tell us the results.
After all, it's really you who wants to know the answer.

Just reset your image filename counter, and see what happens. To reset your camera back to the same image number as to not lose your place, just pop in your last image file onto the card, and the camera will reset back.

Thanks TeamSpeed. I didn't know the sequence could be reset back to the last image number that way. I'll give it a try.

Also, I appreciate the courteous response. I guess rude can become normal for some people without them even realizing how it affects others.

MarkivAntony wrote in post #12907436
Thanks TeamSpeed. I didn't know the sequence could be reset back to the last image number that way. I'll give it a try.

Also, I appreciate the courteous response. I guess rude can become normal for some people without them even realizing how it affects others.

Yes, the camera will reset to the highest of what it sees on a card, and what it has remembered internally. Welcome to POTN! Stay around long enough, and you will see it all.

You can read all the canon raw file metadata already using ExifTool and ExifTool GUI, there's no need to resort to a hex editor.

SAArdent wrote in post #12907462
You can read all the canon raw file metadata already using ExifTool and ExifTool GUI, there's no need to resort to a hex editor.

I did briefly look at ExifTool, and it seemed to show everything except the shutter count. I just reset the file numbering, and "File Index" was reset to 1, and "File Number" changed to the new filename. When I compared all other EXIF data deltas after resetting the number, no other values parsed by ExifTool seemed relevant to the shutter count.

As to my original question, offset 2236 was also reset to zero, so my suspicion was wrong. In the spirit of learning, I'll keep looking.