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EOS R7 won't let me adjust F-stop or focus

paulrvelazquez
Apprentice

I have a Canon R7 that ended up losing the ability to focus. Had it sent into Canon and they sent it back "Fixed". However I still don't have the ability to focus or to adjust FStop. Updated to the latest firmware, nothing. My theory is that it is simply not interfacing with the lenses (Tried swapping Lenses). Anyone have a solution or idea of what to try?

6 REPLIES 6

deebatman316
Elite
Elite

Does the camera report the F stop. Or does it say F/00 or F--. 


-Demetrius

Current Gear: EOS 5D Mark IV, EF F/2.8 Trinity, EF 50mm F/1.8 STM, EF 85mm F/1.8 USM, 470EX-AI & 600EX II-RT

Retired Gear: EOS 40D

It shows F00. thumbnail_IMG_5041.jpg

Do you have another lens to test on the camera. It could be a problem with the camera body.


-Demetrius

Current Gear: EOS 5D Mark IV, EF F/2.8 Trinity, EF 50mm F/1.8 STM, EF 85mm F/1.8 USM, 470EX-AI & 600EX II-RT

Retired Gear: EOS 40D

I have tried it with both my RF 24-70s since I have two. Just randomly occurred without a lens swap.

stevet1
Whiz
Whiz

paulrvelazquez,

Yeah, your lens is not communicating with your camera. I used to have the same thing when I was trying to use FD lenses on an EF body.

You will need to either get an RF lens, or an EF-R adapter that will let you use the lens that you have. They run about $130.

What lens do you have, by the way?

If you are trying to use an RF lens, it's possible that the con5acts on either the lens or camera are either broken, or dirty.

If you've already sent the camera to Canon and they sent it back saying, "It 's fixed", the problem probably is not the camera.

Steve Thomas

It is a Canon RF Lens. It is the 24-70. Tried different RF 24-70 to see if it was a specific lens. And neither work.

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