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EF and EF-S lenses on M with adapter - IS still working

Started Feb 9, 2019 | Discussions thread
thunder storm Forum Pro • Posts: 10,139
Re: It's normal with recent model M's

Marco Nero wrote:

I often use EF lenses with I.S. on them with the EOS M cameras. This seems to be a problem for more recent models (from the M3 onward). I can recall quite a few discussion threads on this matter and it was why I cancelled my M3 order several years ago. But now I've moved onto the M6 and I haven't really had any issue with it. Whilst you can indeed turn off the I.S. on the EF and EF-S lenses, it still tends to run continuously on EF-M lenses. Again, this wasn't an issue with the original EOS M camera, only with the models that came later. Canon clearly don't see it as a problem and in some ways they've gotten around it with the EF-M lenses by eliminating external I.S. switches and allowing a menu-option for turning it on/off. This of course is a terrible solution

Agree.

but at least it doesn't draw much power when it's on with those smaller lenses. I think most users don't notice it or don't care.

Agree.

.
There's a possibly a gyroscope inside the camera which can detect movement that communicates with the one inside I.S lens. Placing your camera onto a tripod would normally turn off the I.S. on the camera temporarily. But I've noticed it's still perfectly operational on my longer EF lenses (which is handy if you need to cancel out shake with a long zoom). Turning off the I.S. switch works just fine.
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With DSLRs your I.S. usually becomes inactive until the shutter button is partway depressed. This is how the original EOS M worked as well: The I.S. was off until you pressed lightly on the shutter release button and then it became active. I'm sure Canon believe it necessary if so many models have been released with this still unchanged.

I think the reason is IS needs a little bit of time to get fully operational. Not a problem for and enthusiasts, but the M system is (also) aimed at beginners and consumers. It is about simplicity for who wants this (while you can still work in more advanced ways if you like). Adding a switch to a lens is not adding simplicity. Maybe the price can also be lower without it.

I can say that I haven't found it noticeably draining for my batteries.

EF-m lenses will likely not have very large elements moving.

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If your facts are different we could save the peace just by calling it copy to copy variation.

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Canon EOS 6D Canon EOS M6 II Canon EOS R5 Sony a7 IV Canon EF-S 15-85mm f/3.5-5.6 IS USM +24 more
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