Can Canon EF and EF-S lenses be used on an EOS M / EF-M camera?
Asked 7/24/2012
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I have Canon EF and EF-S lenses from a Canon 40D and I'm considering an EOS M camera with the EF-M mount. Can my existing lenses be used on an EF-M body, and will they retain normal functionality?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
14y ago
2 Answers
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Canon also announced the Canon Mount Adapter EF-EOS M when they announced the EOS M camera. The adapter is said to be available in October 2012 for $199 USD. It is compatible with the full range of EF and EF-S lenses that are currently available. This also includes the full range of third-party lenses that currently work with the available EOS bodies.
The adapter specifically extends the EF-M flange distance(bayonet to the sensor) from 18mm to 44mm that the other Canon DSLRs have.
One nice feature of the adapter is that it has a built in tripod mount. This can come in handy when mounting a larger lens to the smaller EOS M body. One example of a very large full size lens being used with the adapter can be found here, where they test it with an EF 800mm prime lens.
So any lens that you have that works with the Canon 40D should have no problem with the EF-M mount EOS M camera body, using the adapter of course. This means full functionality such as autofocus and lens information. I have yet to test out the implementation to see how autofocus actually performs with this setup, but early reports seem to be positive from what I have found.
Originally by user4892. Source · Licensed CC BY-SA 4.0
user4892
14y ago
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Generated from our catalog & community — verify before relying on it.
Yes — Canon EF and EF-S lenses can be used on an EOS M / EF-M camera, but you need the Canon EF-EOS M mount adapter. The adapter makes up the difference in flange distance between EF-M and Canon DSLR mounts, allowing EF and EF-S lenses to fit and operate on the EOS M body.
According to Canon’s announcement, the adapter is compatible with the full range of EF and EF-S lenses, including third-party lenses that already work on Canon EOS bodies. It also includes a tripod mount, which is useful when supporting larger or heavier lenses on the small EOS M body.
One practical caveat: while the lenses are compatible, autofocus performance may not feel the same as on a DSLR body, because the EOS M uses a different autofocus system. Larger lenses will also be physically awkward on the compact camera body.
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