I have heard that for Nikon DSLR cameras you can find that information in the EXIF data that in embedded in all pictures you take with a Nikon DSLR.
I don't have a Nikon picture handy, so you can give it a try (and let us know if it works).
If you don't have a program that reads EXIF data do a search for a program called Opanda.
If you have Irfanview, it can read EXIF data too.
It is about 3/4 way down toward the end of the EXIF list.
The line item name is "Total Pictures".
Hi, I'm selling a Nikon D300 that I inherited, and I've been asked how many shutter activations it has. Can someone tell me how to determine this? Someone told me to take a pic and look at the file number and that's the number of activations, but I want to make sure I give an accurate count. Is there somewhere in the menu that I can look. I am a photography novice, so please give me very specific instructions. I appreciate it!!