Canon EOS-M Adapter
Canon Mount Adapter EF-EOS M (allows all EF and EF-S lenses to work on EOS-M cameras, 5.4 oz./154g, about $200). enlarge. This free website's biggest source of support is when you use these links, especially these links directly to it at Adorama or at Amazon, when you get anything, regardless of the country in which you live. Thank you! Ken.
Canon Mount Adapter EF-EOS M on an EOS-M.
Autofocus, Image Stabilization, automatic aperture control and full and complete EXIF data transfer all work flawlessly, which means they work exactly as if they were native EF-M lenses.
Compatibility and Formats
Canon calls this the Canon Mount Adapter EF-EOS M.
EF means "electronic focus," meaning that there is an autofocus motor in the lens itself. All Canon lenses since 1987 have been EF. These are the lenses which attach to the front.
EOS-M means that it adapts these lenses to an EOS-M camera attached to the back.
None, there's just air inside.
Front, Canon Mount Adapter EF-EOS M.
Yes, there is complete electronic communication for AF to work.
Automatic Aperture Control
Yes, there is complete electronic communication for the diaphragm to work.
Yes, works perfectly.
Yes, there are 8 or 9 gold contacts on both ends to couple everything perfectly to and from lens and camera.
Bottom, Canon Mount Adapter EF-EOS M.
The tripod socket unscrews.
5.440 oz. (154.2g), measured.
Standard EOS body cap, included.
EB rear "dust cap," included.
LP811 sack, $24.
I'd use a tube sock instead.
Made in Taiwan.
Canon Product Number top
23 July 2012.
Shipping Since top
Price, USA top
2012 July - 2013 January:$200.
Box, Canon Mount Adapter EF-EOS M.
As covered above, all data, Image Stabilization, apertures and autofocus all work perfectly with this adapter. Canon's EF lenses have always communicated, focused, stopped down and operated purely electrically, so it's no big deal that Canon was able to engineer this adapter to let the big lenses work flawlessly on the smaller cameras.
The adapter is very, very tough. It's all metal; not some plastic-bodied piece of crap. Canon knows others will come out with copy-crap products, and this one is built like a tank as it should be.
The serial number is engraved in black on the barrel near the camera's mount.
The all-metal tripod foot unscrews.
Rear, Canon Mount Adapter EF-EOS M.
This adapter is built tough. I'm sure there will be crummy ones sold for a few dollars direct from China over eBay, however my experience with those sorts of adapters has been that they are not made to tight enough mechanical tolerances so that infinity focus is a hair off, and therefore that most lenses with internal focus or zooms will never operate at peak performance. Likewise, copy products will never feel as good, work as smoothly or be as well built.
If you're a hobbyist, who cares, but if you do this for a living, $200 is well worth it not to waste any time with substandard products. (See Is It Worth It.)
The native EOS-M lenses are much smaller than any other lens used with this adapter. Don't get this adapter to use an old EF-S 18-55mm lens; the combo is too big, and the EF-S 18-55 isn't as good optically as the native EF-M 18-55mm lens.
For all other uses, if you want to use the 10-22mm ultrawide or your Canon telephotos, this is your adapter. Unlike most other adapters offered by other camera makers, Canon is the only camera maker with all-electronic lenses worthy of adapting both old and new (Nikon's lenses still use mechanical diaphragm linkages from the 1950s, and Fuji never made any electronic SLR lenses, for instance). Every other camera maker's adapters are kludges which lose a lot of features since the older lenses being adapted use more primitive technology than Canon's EOS system. This EOS-M adapter is flawless because Canon's EOS system is so well integrated; Canon's all-electronic EOS system of 1987 was decades ahead of its time.
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