Since the camera’s image File number sequence counter rolls
back over to 0001 when you exceed 9999 images, you need a
way to keep from accidentally overwriting images from the
first set of 9999 images you took. I use this method:
▪ First 9999 images: 1DY_0001 through 1DY_9999
▪ Second 9999 images: 2DY_0001 through 2DY_9999
▪ Third 9999 images: 3DY_0001 through 3DY_9999
See how simple that is. The above numbers show a range of
30,000 images. Since the D300(S)’s shutter is tested to a
professional level of 150,000 cycles, you will surely need to
use a counting system like this one. My system only works up
to 89991 images (9999 × 9). If you wanted to start your
camera at “o” instead (0DY9999), you could count up to
99,990 images.
If Nikon would ever give us just one extra digit in our image
counter, we could count in sequences of just under 100,000
images instead of 10,000 images. I suppose that many of us
will have traded on up to the next Nikon DSLR before we
reach enough images that this really becomes a constraint. On
my Nikon D2X that I’ve used since 2004, I’m now close to
40,000 images.
File Number Sequence used with File
Naming
Custom setting d7 in the D300S and Custom setting d6 in the
D300 control the File number sequence setting. That function
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