File numbering glitch on 40D

I'm not sure if the 40D is supposed to work this way or not, but I don't think it is...

Last weekend my 40D rolled over 9999 images. When it did, it started numbering at 0001 in folder 101. At 101-0137 it reverted to folder 100 and no matter what I do I can't get it back to number in Folder 101. I've tried manually renumbering the folder to 101 in my computer, I updated the firmware to V. 1.1.1, I've formatted the card in the computer and tried different cards and no matter what I do it always reverts to folder 100 when I format the card in the camera. The image number sequence continues, but the folder is always 100. Am I making sense here? Shouldn't it just create a new folder every time it reaches 9999 so the numbers are 100-XXXX, 101-XXXX, 102-XXXX? My 20D worked that way but it creates a new folder for every 100 images. Is there something wrong with the camera that requires me to send it in? It's still in warranty until June.

Doh! Wrong board... Hope a mod will move it.

JWright wrote in post #7631626
Doh! Wrong board... Hope a mod will move it.

Moved, by golly.

JWright wrote in post #7631579
I'm not sure if the 40D is supposed to work this way or not, but I don't think it is...

Last weekend my 40D rolled over 9999 images. When it did, it started numbering at 0001 in folder 101. At 101-0137 it reverted to folder 100 and no matter what I do I can't get it back to number in Folder 101. I've tried manually renumbering the folder to 101 in my computer, I updated the firmware to V. 1.1.1, I've formatted the card in the computer and tried different cards and no matter what I do it always reverts to folder 100 when I format the card in the camera. The image number sequence continues, but the folder is always 100. Am I making sense here? Shouldn't it just create a new folder every time it reaches 9999 so the numbers are 100-XXXX, 101-XXXX, 102-XXXX? My 20D worked that way but it creates a new folder for every 100 images. Is there something wrong with the camera that requires me to send it in? It's still in warranty until June.

Not sure as I am a ways off 9999 but could it be because you used an older CF card with the sequencing of Folder 100 ~ i.e.the camera took the 'last' number from a CF card you had been using before the rollover to Folder 101 Just a thought based on very limited knowledge/experience of what you are describing

Edit - thinking about it? Did I read that it will always be folder 100 even after the 9999 rollover? Darn , I hope someone who knows can throw some light on this as I hate a mystery!!!!

As for Canons numbering method I really liked the way my since sold KM A2 did it - a new dated folder for every day it was used. Wonderfull for tracking images & dates as taken

Have a look at Chuck Westfall's detail description of how the Canon file numbering system works HERE

Box Brownie wrote in post #7631941
Not sure as I am a ways off 9999 but could it be because you used an older CF card with the sequencing of Folder 100 ~ i.e.the camera took the 'last' number from a CF card you had been using before the rollover to Folder 101 Just a thought based on very limited knowledge/experience of what you are describing

Edit - thinking about it? Did I read that it will always be folder 100 even after the 9999 rollover? Darn , I hope someone who knows can throw some light on this as I hate a mystery!!!!

As for Canons numbering method I really liked the way my since sold KM A2 did it - a new dated folder for every day it was used. Wonderfull for tracking images & dates as taken

What leads me to think there's something wrong with the camera is that it reverted back to folder 100 in the middle of a shoot. it went from 101-0136 to 100-0137...

CS TAN wrote in post #7632350
Have a look at Chuck Westfall's detail description of how the Canon file numbering system works HERE

I've tried all that... It didn't answer my question about why it reverts to folder 100 after formatting. It shouldn't do that.

Mine too is back in folder 100-XXXX after having rolled over to 101-XXXX (I think). Will continue reading related threads.