EOS to Sony A (MA) Bayonet Adaptor ?

Started Sep 13, 2010 | Discussions thread
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Thomas KP Lee
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EOS to Sony A (MA) Bayonet Adaptor ?
Sep 13, 2010

Have any one see EOS to Sony (MA) Bayonet Adaptor? I have searched for a week, but cannot find such item. I have some 20 Canon EF lens, and now have A55, would really like to use an adaptor to try my EF lens on the A55, MF is not a problem on A55, as it's EVF view finder have x5 and x10 magnifications.

But it seems there is no such bayonet adaptor exist in the world, why? Is it because EF lens is having electronic controlled aperture, so pure mechanical adaptor have no aperture control? Why no microchip to use the MA dc power to control the EF aperture? Even a bit bulky on the adaptor is OK for use.

 Thomas KP Lee's gear list:Thomas KP Lee's gear list
Canon EOS-1D Mark IV Canon EOS-1D X Sony SLT-A99 Canon EOS 70D Sony Alpha 7R +3 more
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