dfindr

7th of June 2007 (Thu), 17:45

Sorry for the long post but this has been bugging me for a long time and I would like to get a definitive answer.

Below are readings of click counts on two seperate 1D Mark 1 cameras.

1D-A Unknown (0093)3,9 : 18,0,31766,0,0,0,65535,65535,1

1D-B Unknown (0093)3,9 : 18,0,3131,0,0,0,4,0,1

We need to clear something up for me and probably for many others here. There are various Exif reader programs out there including CANCOUNT, EXIFREAD, and EXIFTOOL which claim to accurately count clicks in 1D series cameras.

CANCOUNT only give you the current number of clicks in the current cycle. If the clicks are past 65535, than the counter starts over at 1 and CANCOUNT would read that as the number of clicks after 65535, and doesn't count the first 65535 clicks giving you a way way to low reading. For example if a camera is checked with CANCOUNT and the click count states 5000, with CANCOUNT you don't know if the camera has 5000 clicks or 70535 clicks.

Now that is ok if you know for certain you have less than 65535 clicks on the camera you are checking. EXIFTOOL works the same way. So how do you know how many times the camera has passed 65535 clicks using these two programs? From what I can tell you can't.

Now EXIFREAD gives you the (0093) line as illustrated above. What I need to know is what the other numbers mean. I have seen it posted on this forum as well as others that the last number in the string, and in the examples above the number "1", means the camera has turned over one time after reaching 65535 clicks. Is this true or not?

I have also read on this forum as well as other that the number after the "18" in the examples above "0", is where the turn over counter would read "1" or "2" or "3" depending on how many times the camera has passed 65535 following a reset. Is this true or not?

The problem is obvious, if the last number indicates the turn over has occurred, than the cameras noted above have 65535 + 31766 and 65535 + 3131 clicks respectively.

If the turnover counter is the "0" immediately after the 18 than these 1D's have 31766 and 3131 clicks respectively. BIG DIFFERENCE when

evaluating used 1D's.

Also does any one know what the other numbers mean? I know the (0093) is a line number, I figure the 3,9 and 18 are exclusive identifiers to the 1D as I have never seen them change when evaluating many used 1D Mark 1's. Each model 1D is different I believe at least it is for the 1D Mark 2. So can someone please fill in the blanks?

Unknown (0093) 3,9 : 18, A, B, C, D, E, F, G, H..

A - is the subject of the above question

B - is the click count

C - ??

D - ??

E - ??

F - ??

G - ??

H - is the subject of the above question as well.

Thanks!

Below are readings of click counts on two seperate 1D Mark 1 cameras.

1D-A Unknown (0093)3,9 : 18,0,31766,0,0,0,65535,65535,1

1D-B Unknown (0093)3,9 : 18,0,3131,0,0,0,4,0,1

We need to clear something up for me and probably for many others here. There are various Exif reader programs out there including CANCOUNT, EXIFREAD, and EXIFTOOL which claim to accurately count clicks in 1D series cameras.

CANCOUNT only give you the current number of clicks in the current cycle. If the clicks are past 65535, than the counter starts over at 1 and CANCOUNT would read that as the number of clicks after 65535, and doesn't count the first 65535 clicks giving you a way way to low reading. For example if a camera is checked with CANCOUNT and the click count states 5000, with CANCOUNT you don't know if the camera has 5000 clicks or 70535 clicks.

Now that is ok if you know for certain you have less than 65535 clicks on the camera you are checking. EXIFTOOL works the same way. So how do you know how many times the camera has passed 65535 clicks using these two programs? From what I can tell you can't.

Now EXIFREAD gives you the (0093) line as illustrated above. What I need to know is what the other numbers mean. I have seen it posted on this forum as well as others that the last number in the string, and in the examples above the number "1", means the camera has turned over one time after reaching 65535 clicks. Is this true or not?

I have also read on this forum as well as other that the number after the "18" in the examples above "0", is where the turn over counter would read "1" or "2" or "3" depending on how many times the camera has passed 65535 following a reset. Is this true or not?

The problem is obvious, if the last number indicates the turn over has occurred, than the cameras noted above have 65535 + 31766 and 65535 + 3131 clicks respectively.

If the turnover counter is the "0" immediately after the 18 than these 1D's have 31766 and 3131 clicks respectively. BIG DIFFERENCE when

evaluating used 1D's.

Also does any one know what the other numbers mean? I know the (0093) is a line number, I figure the 3,9 and 18 are exclusive identifiers to the 1D as I have never seen them change when evaluating many used 1D Mark 1's. Each model 1D is different I believe at least it is for the 1D Mark 2. So can someone please fill in the blanks?

Unknown (0093) 3,9 : 18, A, B, C, D, E, F, G, H..

A - is the subject of the above question

B - is the click count

C - ??

D - ??

E - ??

F - ??

G - ??

H - is the subject of the above question as well.

Thanks!