My local camera shop got Canon EOS R in stock yesterday, so I quickly swung by to test its electronic shutter travel speed. While I really like analog oscilloscope method I've learned from reading u/JimKasson site, the device is not convenient to lug around. So I've made a 120 FPS video of running vertical stripes and played it on 120 Hz iPad Pro. It is too slow to measure fast shutters, but good enough for slow ones. Canon EOS R silent electronic shutter photo Adapted 85 mm EF lens on the camera couldn't focus close enough to completely fill the frame with the tablet screen, but it was good enough to interpolate from. I've got very close to 9 equally tall segments across the height of the frame. As each column appears for 1/120 s. it means that the electronic shutter travels the full height of the frame in ~ 75 ms, or ~ 1/13.3 s. I've only checked it while taking photos with default settings. From reading the EOS R manual, it doesn't seem to have any faster electronic shutter modes, but I cannot say that for certain without fully testing everything. It is also expected that shooting in crop mode has less rolling shutter as only part of the frame is read out.I've also made a shot with mechanical shutter, but as expected, it is too fast for this method. A single column is fully visible and few full faint ones as well due to the slow pixel response time. At room temperature, it took 8.3 ms to go from completely black to completely white and then while going to black again it was 10.6 ms before reaching 10% white and extra ~11 ms to reach lowest black level. Canon EOS R mechanical shutter photo via /r/photography https://ift.tt/2EhKb5c
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