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HELP!? Sigma Super-wide lens not working on Canon 400d

Started May 18, 2020 | Questions
LilyOB New Member • Posts: 1
HELP!? Sigma Super-wide lens not working on Canon 400d

Hi,

I have recently bought a Canon 400D to get back into photography, I already had a Sigma Super-Wide II 24mm 1:28 Multi-Coated lens from my previous camera (A Black Magic). Obviously for the lens to work on my old Black Magic I needed a M4/3 adapter, Anyway now for this camera I don't need it as online it says they are both EF mounts. The lens mounts on perfectly fine, but when I take a picture It comes up with error 99, Ive checked and there are no problems with the battery or the CF card. This leads me to believe its the lens, as without the lens the camera works fine. What am I doing wrong? do I need another adapter for this? Some online forums mention an OF-EOS adapter, but with the camera and lens both having the same mount system you would think that shouldn't be an issue?

Please Help!

Lily.

P.s, I have also tried the lens on my old Lumix G2 with the M3/4 adapter on and it works fine, but with no other EF/EOS cameras, I can't try out the lens to work out if that is the problem!

ANSWER:
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Canon EOS 400D (EOS Digital Rebel XTi / EOS Kiss Digital X) Panasonic Lumix DMC-G2
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Inukim Regular Member • Posts: 328
Re: HELP!? Sigma Super-wide lens not working on Canon 400d
2

The Sigma Super-wide is a old lens that was used during the film days.  It will not work on most new digital cameras because of a lens protocol change.  Sigma once offered a firmware update, in which you would send the lens back to Sigma and they would update it for use with newer Canon cameras.  That was a long time ago and they do not offer this service anymore.  As long as you don't stop down the aperture, you should be able to take photos without getting a error code.

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