Jon
7th of April 2005 (Thu), 07:58
I don't believe that retains the number of shutter actuations, at least on the 20D, and the numbers it produces are somewhat more cryptic than primoz reports. In the 20D, what I found was:
IMG_0001 (0093)3,16 : 32,6400,1,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0100 (0093)3,16 : 32,6400,100,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 64 to second grouping as folder count increments)
IMG_0101 (0093)3,16 : 32,6464,101,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0200 (0093)3,16 : 32,6464,200,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 64 to second grouping)
IMG_0201 (0093)3,16 : 32,6528,201,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0255 (0093)3,16 : 32,6528,255,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 1 to second grouping, reset third grouping to 0; we deduce frame counter is an 8-bit value)
IMG_0256 (0093)3,16 : 32,6529,0,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0300 (0093)3,16 : 32,6529,44,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 64 to second grouping as folder count increments)
IMG_0301 (0093)3,16 : 32,6593,45,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0400 (0093)3,16 : 32,6593,144,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 64 to second grouping as folder count increments)
IMG_0401 (0093)3,16 : 32,6657,145,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0500 (0093)3,16 : 32,6657,244,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 64 to second grouping as folder count increments)
IMG_0501 (0093)3,16 : 32,6721,245,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0511 (0093)3,16 : 32,6721,255,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(add 1 to second grouping, reset third grouping to 0; we deduce frame counter is an 8-bit value)
IMG_0512 (0093)3,16 : 32,6722,0,0,0,0,65535,65535,0,0,0,0,0,0,0,0
IMG_0526 (0093)3,16 : 32,6722,14,0,0,0,65535,65535,0,0,0,0,0,0,0,0
(no apparent reason for groupings 7 & 8 to change here)
IMG_0527 (0093)3,16 : 32,6722,15,0,0,0,3,0,0,0,0,0,0,0,0,0 as folder count increments
IMG_0600 (0093)3,16 : 32,6722,88,0,0,0,3,0,0,0,0,0,0,0,0,0
(add 64 to second grouping as folder count increments)
IMG_0601 (0093)3,16 : 32,6786,89,0,0,0,3,0,0,0,0,0,0,0,0,0
IMG_0674 (0093)3,16 : 32,6786,162,0,0,0,3,0,0,0,0,0,0,0,0,0
(3 shots, no card taken at this point; note, numbering does not reflect this)
IMG_0675 (0093)3,16 : 32,6786,163,0,0,0,3,0,0,0,0,0,0,0,0,0
Note: the 20D starts a new folder every 100 frames. 100 decimal is 64 hex. This would explain adding 64 to group 2. But, at least on the 20D, the numbers are used to track the folder and picture number, not the shutter actuations. Would have been nice . . .
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