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Hello. Yesterday I went to a concert and did some video records. I've record sound on internal microphone. And everything was fine until one moment.At the half of one song sound went bad. I've uploaded the part of the video here (bad sound from 23 second) ...

Hello everyone. Two days ago i've received my camera from CPS after autofocus calibration. But strange things: First - it is clear that some screws were unscrewed. Second - on the contact for battery grip: Any ideas what is it? And why? Is autofocus calibration process required disassembly...

Hello everyone. Two days ago i've received my camera from CPS after autofocus calibration. But strange things: First - it is clear that some screws were unscrewed. Second - on the contact for battery grip: Any ideas what is it? And why? Is autofocus calibration process required disassembly...

I have a question about autofocus in 5DM4. I mean not LiveView focusing. I have problem with refocusing during session of shots. In LifeView the lens focus perfectly. My test step: I put the camera on tripod -> focusin on really contrast image (test chart by Focal) using central focusing dot...

I continue test my lens. I've read https://www.canonrumors.com/tech-articles/how-to-test-a-lens/ article about testing. I've never tested lenses before in this way. I haven't any good printed charts for it, but i've used infinity object to test. I have attached the results. As i can see on...

Hello. I've recently bought new lens Canon 35 mm F1.4L II USM. First thing: loose focus ring (longitudinal play). Like on video here: https://www.youtube.com/watch?v=w-2QGo2a5ZE .I asked official repair center about this problem. Answer was - "no problem". Second: I hear some strange sound when...