All but one... the
Canon MP-E 65mm F/2.8 1-5x MACRO lens (notice how there's no EF in front of the title of the lens)
is openly stated by retailers as "
not compatible with the EOS M".... the thing is, the EOSM cameras can be mounted directly to telescopes for Manual Focus use... and this is a Manual Focus only lens. In theory it ought to work. But the retailers state that it does not. It also uses an EF mount. So WHY doesn't it work with an EOSM camera? Would someone care to confirm?
.

Would someone with this lens care to let us know if it works with the EOSM cameras or not?
Hi Marco,
Unfortunately in this day and age a lot of (often incorrect) info just gets parroted from website to website, without people actually verifying whether or not that info was in fact correct (or
Not, as is the case here).
I can see how this particular string of mis-information started though, and it is indeed partly Canon's own fault. If you look at one of
Canon's EU Web Pages for this lens, it states that there is "Guaranteed Compatibility With" [the following bodies]... And the list does not include any EOS-M cameras! (note: there are a lot of other notable bodies missing from the list also).
But it looks like the website you've posted the screen-grab from has turned this somewhat vague information into
not suitable for EOS-M.
Which couldn't be further from the truth, as folks have been using this lens on EOS-M cameras from the very beginning (including myself on the EOS M5)...

Canon MP-E 65mm on the Canon EOS M5 (with Canon EF adapter). 1:1 Macro Ratio, f/11.

Canon MP-E 65mm on the Canon EOS M5 (with Canon EF adapter). 5:1 Macro Ratio, f/4.
This lens is an absolute gem, and one of the reasons I switched from Nikon SLRs to Canon DSLRs way back when. And if Canon wants to continue selling any of these (uniquely capable) lenses to the ever-increasing mirrorless market segment in the future, then they best clarify their marketing info!
R2
ps. The reason none of Canon's manual focus-only lenses bear the EF moniker is that EF stands for "Electro Focus" and thus wouldn't apply (I'm sure Marco you've known this, and forgotten it a million times already by now!

). R2
--
Good judgment comes from experience.
Experience comes from bad judgment.
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