50 1.2 not focusing

[Philmans123]

Hi All,

My 50 1.2 has stopped focusing completely. I can manually focus but the auto-focus is dead. There has been no 'trauma' to the lens. It was working one day and then nothing the next. Any thoughts/suggestions before I send it in to Canon?

Thanks,

Phil

[Waddizzle]

Which camera body?  Does the AF work with other lenses?

[Philmans123]

5D4 and 5DSR. All other lens are working with both bodies. Thanks for the response.

[deebatman316]

Hi, OP it sounds like a lens issue. Is the lens set to AF mode. The 50 F/1.2 is a USM lens that supports full time manual focus. Without the camera metering system being active. Does the camera even register AF at all.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

[Philmans123]

I agree, I think it is in the lens. I am able to control the aperture fully and it is obviously affecting the image, (i.e., DOF and brightness). All AF controls are active but the lens itself is dead.

Thanks for the response.

[deebatman316]

Does the lens work on a different camera body if you have one or can access one. Are you using any 3rd party accessories if so remove them and try again from factory.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

[Philmans123]

yup, 5d4 and 5dsr

[deebatman316]

Will the lens AF on the other body you mentioned. Or does it continue not to AF but you still can control the aperture.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT

[Philmans123]

AF dead on the second body and I can still control aperture. 😕

[deebatman316]

It sounds like your AF motor is dead.

-Demetrius

40D, 5D IV, EF 16-35mm F/2.8L III, EF 24-70mm F/2.8L II, EF 28-135mm F/3.5-5.6 IS USM, EF 50 F/1.8 STM

430EX III-RT & 600EX II-RT