tfd888 Goldmember  1,816 posts Likes: 3 Joined Apr 2009 Location: CA, USA More info | Feb 02, 2010 02:13 | #1 I know this has been brought up before about trying to figure out the shutter count on 20D bodies and nothing really conclusive has been found but I had an idea which I haven't seen mentioned. Doesn't the 20D create a new folder after every 100 files and increment the folder no. by 1? Couldn't you get an estimated shutter count based on what your folder no. is? Or am I just really short on sleep Alexander R.O.
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S30L28 Senior Member  448 posts Joined Sep 2009 Location: États-Unis More info | Feb 02, 2010 02:31 | #2 http://www.flickr.com …iscuss/72157594389608272/ -Brian
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Feb 02, 2010 03:15 | #3 S30L28 wrote in post #9523234  http://www.flickr.com …iscuss/72157594389608272/ I went here and I found the count on my old 20D. Not as easy as the newer xxD models, but works! Also, I would not base the shutter count by the file numbering system. Those can be changed depending on the numbering on the card you use. Hope that helps! Well, based off of the hex method I have around 30k on the shutter which seems about right. I checked multiple files and it seemed to be accurate across the multiple files I checked. Alexander R.O.
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DStanic Cream of the Crop 6,148 posts Likes: 7 Joined Oct 2007 Location: Canada More info | Feb 02, 2010 06:39 | #4 I ran the test with the hex decoder, and it said my 20d has 15,xxx .. I'm sure it is much more then that. Would canon reset it after replacing a shutter? (previous owner had it replaced) Sony A6000, 16-50PZ, 55-210, 35mm 1.8 OSS
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msowsun "approx 8mm"  More info | Feb 02, 2010 07:44 | #5 S30L28 wrote in post #9523234 http://www.flickr.com …iscuss/72157594389608272/ I went here and I found the count on my old 20D. Not as easy as the newer xxD models, but works! Also, I would not base the shutter count by the file numbering system. Those can be changed depending on the numbering on the card you use. Hope that helps! It does not work. Scroll down and read this.... http://www.flickr.com …iscuss/72157594389608272/ In Plain English: It Doesn't Work  Really, people have been trying to figure out how to get an accurate shutter count for the 20D and 30D for a long time and nobody has found a way to do it other than to use Canon's special software. Why this information is hidden from us on these cameras is a mystery. If you want to prove that this method does not work, do the following: First, take a photo using the CF card you've got in the camera now. Remove that CF card and set it aside. You'll need it later to restore your file numbering to where it is now. Take a different CF card and using a card reader connected to your PC, delete all files and directories on the card. Now, insert that card into your camera. In the Menu, find "File Numbering". Switch that from Continuous to "Auto Reset". Now, take a photo. Remove that CF card and put it back into your card reader connected to your PC. Open that RAW file with the hex editor. The actual file number is Folder 100, shot 0001 but the decoded Hex will tell you that the number is now 281. This tells us that first, this location does not show the actual shutter actuations and second, this number cannot be simply decoded as a standard HEX number to even read the file number. A while back, someone posted the way to properly decode this data to arrive at the current file number on the DPReview 20D forum. I don't remember the details but the main point is that this pair of locations does not give the number of shutter actuations. It only gives you the current file number, and that is easily reset so you never can know what the true shutter count is for a 20D. Ok, now if you want to get your camera set back to the same shot number as where you left off (more or less), do the following: Put the card with the 100 0001 shot on it (The shot you just took) back into the camera. Go into the menu and set the File Numbering mode back to "continuous". Now remove that card. Install the card we set aside earlier. Now your camera's numbering will adopt the numbering from that old card and you should be back where you started. Sadly, nobody that I know of has cracked this mystery...... yet Jim Posted 38 months ago. Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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jacklumber Goldmember  1,105 posts Likes: 9 Joined Mar 2006 Location: southern alberta. More info | Feb 02, 2010 09:09 | #6 Try this, There is a fine line between "hobby" and "obsession"
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Feb 02, 2010 12:48 | #7 I'll look into the Flickr method but I had heard that it isn't accurate either. Alexander R.O.
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