Camera Labs

http://www.43rumors.com/kipon-eos-to-m4 ... c-control/

If "full electronic control" includes AF, I wonder if or how it will be affected with the adapter.

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Bodies: Canon EOS 550D w/ Magic Lantern
Lenses: Tokina AT-X 116 Pro DX f/2.8, Canon EF-S 15-85mm f/3.5-5.6 IS USM, Canon EF-S 18-55mm f/3.5-5.6 IS, Canon EF 50mm f/1.8 II, Canon EF 70-300mm f/4-5.6 IS USM
Accessories: YongNuo Speedlite YN-468 Flash, Neewer Macro LED Ring Light, Meike Battery Grip, YongNuo RF-602 Wireless Flash Trigger & Receiver YongNuo WR-128 Wireless Remote Control

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Unfortunately the Kipon site is woefully reticent about what their adaptor can and can't do. For comparison the Metabones EF to NEX offers "Electronic aperture, EXIF, image stabilization" but notably doesn't offer AF, although it does allow manual focussing with those lenses with electronic focus rings.

Maybe Kipon have done better but I wouldn't hold my breath. I've no expertise in the field but it seems to me that while the other functionality requires little from the chip on the adaptor the close integration between AF processing on the camera and the motor and/or electronics on the lens (think feedback loops if nothing else) means that AF is unlikely to be a feature. I hope I'm wrong.

As things stand I think the EOS M has to be the preferred choice for owners of EF/EF-S glass who want to retain use of their lenses on a CSC, even though the EF-M adaptor from Canon is hardly cheap.

Bob.

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OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.

The Canon adapter isn't much in the grand scheme of things, and 3rd party electronic adapters aren't cheap either.

I had wondered if someone were to come up with a AF capable EOS to m4/3 converter if that would be worth getting alone for the body stabilisation.

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.