sparkie Posted February 20, 2007 Share #1 Â Posted February 20, 2007 Advertisement (gone after registration) Is there a way to access the number of actuations on an M8. I have an ex demo unit and just wondered how many winks its had. Thanks in advance Link to post Share on other sites More sharing options...
Shootist Posted February 20, 2007 Share #2 Â Posted February 20, 2007 If the image # counter has not been reset just look at the last image taken. The file name will have the total number of shots, L100xxx. Other then that I have not found any other way. The total shutter actuations count is not stored in the EXIF data like other digital cameras. Link to post Share on other sites More sharing options...
sparkie Posted February 20, 2007 Author Share #3 Â Posted February 20, 2007 ok thanks. i only have one SD card. on my first M8 i shot close to 200 shots. when i got the demo M8 as a replacement I used the same SD card. I think its carried the number actuations from the first camera. So I don't know for sure how many clicks its really had. I'm sure there must be a way without sending all the way to solms just to find out. Link to post Share on other sites More sharing options...
cbretteville Posted February 20, 2007 Share #4  Posted February 20, 2007 Sparkie, I beleive there is. One of the tags in the DNGs marker notes is called "ImageUniqueId". This looks to me as it is a running serial number indipendent of the file's lxxxxxxx.dng numbering. I could be wrong as my supply of M8 DNGs is limited.  This number is in hexadecimal (base 16). Here is an example of what it looks like: ImageUniqueID: 0000000000000000000000000000040d  Forget the leading zeros which leaves you with 40d hex which equals 1037 in decimal notation. Any scientific calculator should be able to convert the hex number to a decimal - even 'calc' in windows can do that. You can also use Google. Open a google page in your browser of choice and enter: "0x40d in decimal" where "40d" is the number you which to convert. The "0x" prefix is to tell google the number is in hexadecimal and must be there. Google will tell you that 40d = 1037.  To find it, unless the tag is displayed in the converter, open a DNG in notepad (or whatever the OSX equivalent is) and search for "00000" you should be able to find the string Im referring to. You'll not see the "ImageUniqueId" text as that is just there via a numerical ID. Just don't make any fchanges to the file before you close it. or even better do this on a acopy of a dng.  Hope this helps. - Carl Link to post Share on other sites More sharing options...
sparkie Posted February 20, 2007 Author Share #5 Â Posted February 20, 2007 thanks Carl. I tried your suggestion. I opened the first and second DNGs taken on the first M8 I tried. Now the dealer said it was brand spanking new from the factory. the hex numbers are: 001A3 and 001A4, yielding numbers 419 and 420 respectively. based on this maybe around 400 actuations were used to test and calibrate the camera prior to shipping. Â in case anyone is interested the hex/dec converter i used was at: http://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html Link to post Share on other sites More sharing options...
cbretteville Posted February 20, 2007 Share #6 Â Posted February 20, 2007 400 sounds a bit high to me. The ones I've seen differ with something like 20-30 from the file number where I know numbering hasn't been reset. But as I already mentioned, this is based on my limited samples of M8 files and I could be totally out left field. Â BTW ImageUniquID isn't part of the marker notes its part of the std v 2.2 Exif spec. My bad. Â - Carl Link to post Share on other sites More sharing options...
wattsy Posted February 21, 2007 Share #7 Â Posted February 21, 2007 Advertisement (gone after registration) Sparkie,I beleive there is. One of the tags in the DNGs marker notes is called "ImageUniqueId". This looks to me as it is a running serial number indipendent of the file's lxxxxxxx.dng numbering. I could be wrong as my supply of M8 DNGs is limited. Â Sounds like a good theory to me. The 'ImageUniqueId' provided me with a count which is pretty close to the number of shots I have made with my M8. My DNG numbering was reset when my M8 went back as part of the recall but the 'ImageUniqueId' seems to have been unaffected by that. Link to post Share on other sites More sharing options...
rpierce Posted February 21, 2007 Share #8 Â Posted February 21, 2007 For my recall, I believe they required about 200 exposures. The recall also adjusted the rangefinder. Our numbers seem reasonable. Â Bob Pierce Link to post Share on other sites More sharing options...
wparsonsgisnet Posted February 21, 2007 Share #9  Posted February 21, 2007 Carl, I could not open the DNG with Notepad on my windoze machine, so I used Wordpad, which opened it just fine. A Ctl-F (search) for "00000" (5 zeros) found a long set of zeros with c99 at the end.  using my Google home page, I did not find a way to convert from hex, so I did a google search for hex convertor and ended up using the converter at this link hexadecimal conversion, convert decimal to hexadecimal  The value c99 converts to 3225, decimal, approximately the correct number of exposures I have taken.  Now all I have to do is figure out how to *choose* a new number set. I have been successful in geting back to L100...1, and *once* to get to L300... , but I haven't been able to get to L200....  In any case, I confirm that this counter (in every DNG) is the running count for exposures.  I'll report back. Link to post Share on other sites More sharing options...
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