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

Started May 18, 2020 | Questions thread
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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