I suspect that is the case. The Canon TCs containg microcomputers to optimize performance with supported Canon lenses. " According to Chuck Westfall (Canon USA): "As with previous EF Extenders, usage of Series III EF Extenders lowers AF drive speed to improve AF performance. When Extender EF 1.4X III is used, AF drive speed is reduced by 50%.
The LP-E4 battery, introduced with the EOS-1D Mark III, was the first battery to offer extra information when communicating with the camera, resulting in the ‘Battery info’ menu screen. It was also the first of a series of lighter, higher capacity lithium ion (Li-ion) camera batteries for the EOS system – previously the batteries for the Canon is the only way to get a true accurate count. I believe shutter count is of little to no value anyway. A better solution but it will cost a bit more is to have Canon do a C&C on the camera and ask for a shutter count (no extra charge) if you must. Of course this is in case you actually buy th I know these are estimates and I know of cameras that far exceed it. I know a guy that has a 1Ds Mk III exactly like mine. The Canon estimate for this workhourse is 300k but he went pass 1,000,000. They claim that 33% of the 1Ds Mk III's will do that.
EOS Count worked well and quickly and gave me a shutter count of 1936 but I could not get EOS image to work on the 1D Mark IV. Reply Reply with quote Reply to thread Complain
Elite. Options. 03-28-2023 05:57 PM. Canon's later model cameras are very difficult to get a shutter count from. Your best bet if you want an authoritative number is to get Canon do do the count with their in-house software. There will be a charge, but it's the gold standard for getting a count. Note that a shutter count is only part of the story. I had been tossing up between a 5D MkIV and a 1DX MkII, and compromised by getting the 5D Mk IV plus the used 1DX. They're a perfect pair with a 7D MkII as a second action body. FWIW the 7D MkII is a match for the 1DX in AI Servo mode, the tracking is just fantastic.

5D Mark II 5D Mark III 1D Mark IV 1D X ID C This software is free to use and without any warranty. Use this program just for supported Cameras! Use this program at your own risk! Este programita es del 2013, puede que haya alguna actualización con más cámaras que han salido después. Saludos

You can find out the 1DX's shutter count by going into the menu. So Canon got rid of this feature in the 5D Mark IV? Canon has had a visible shutter count in many of its pro cameras. D2000, D6000, 1D, 1Ds, 1D II, 1Ds II, 1D II n, 1D X, 1D X II, 1D X III. 9FIO8A.
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    • canon 1d mk iv shutter count