How to fix error 20
I have a 5d Mkii that keeps giving me a error 20. What is problem.
The Canon EOS 5D Mark II is a 21.1-megapixel full-frame CMOS digital single-lens reflex (DSLR) camera with video recording capabilities.
hello, it's a late answer,
err 20 corresponds mainly to the mechanism of the defective mirror.
but the shutter may be defective, (although err 30 should be displayed), or the motherboard if the device displays err 20 after wetting the device (but this is unlikely).
it can also be an electronic problem on the lower board when exposed to water.
I think it might be also a contact problem between your body and the lens. Check if the lens are properly attached to the body when you twist them into place. If you can slightly move it, take it off and tighten the small screws at the bottom of the lens that holds the EF mount to yhe tube of the lens. Now try to reattach the lens and test if the problem still exists.
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