Canon 5D Mark IV

[MrJ1]

Have noticed a click sound when turning on the 5D Mark IV camera. This is the only time this sound occurs. Have turned off sound & sensor cleaning but still get click sound when turning on camera. My 7D Mark II does not have this click when turning on camera. It seems like it just started or I haven't ever noticed it before. does anyone know what this is or is this normal for the 5D?

Thank you for any help.

[MrJ1 · Accepted solution]

Looks like problem solved. Just updated the firmware from 1.3.1 to 1.3.3 and the click sound stopped. Hope this helps if anyone else has this problem. Might be a place to start..