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Lens (28-70 f2.8 I) 01 error, not focusing, dark; live mode kind of fixes it, but error returns

Started 6 months ago | Discussions thread
RepairGuy New Member • Posts: 16
Re: Lens (28-70 f2.8 I) 01 error, not focusing, dark; live mode kind of fixes it, but error returns

This is most likely an aperture problem. If you keep the aperture preview button pressed while going from f2.8 to smallest aperture (Live View turned off) the aperture should close gradually when you look into the lens from the front. You should try that at both zoom ends, it has to work at both ends. If it does not, it is very likely the aperture unit.

If you can't transfer a lens mount screw into the empty thread, the lens may have suffered drop damage and the thread broke out.

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