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Sigma macro on A7R problems

pfogle

By pfogle,
in Legacy Lenses

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pfogle Contributor

pfogle

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Hi, I'm trying to use a 70mm Sigma macro using a Fotofiox pro Canon EF -> Sony E adapter. I'm having issues with the lens sometimes not talking to the body. It will take a couple of frames OK, then will just lock up, and I have to take the lens off to reset the body.

 

I think the weight of the lens is pulling the contacts apart, but I can't get my Canon lens (24-105, heavier than the Sigma) to repeat the problem.

 

Tried cleaning contacts etc.

 

Anyone seen similar issues? Any suggestion very welcome!

 

Phil

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  • 2 weeks later...
pfogle Contributor

pfogle

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I had plenty of issues with older sigma lenses for canon mount. these lenses gave an error code with genuine canon digital cameras. if you have access to a canon digital, check whether it works with canon.

Both my lenses work fine with Canon. This is intermittent, and if the camera locks up, I can reset it by removing the lens, which causes the shutter to close as soon as the lens starts rotating in the mount.

 

I suspect software, I'll see if I can get hold of a different adapter.

 

cheers

Phil

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    • Cameratose
      Bokeh?

      By Cameratose · Posted

      Shooting a cactus flower is probably where you do want to have nice bokeh. I can't recall which camera you're shooting, or maybe you haven't said, but using live view you can see what the shot will look like before you press the button. Try setting up on a flower or something stationary where you can control the background and see the changes different settings make. 
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