Photography Asked by Itai on October 19, 2020
While I’m interested in a mirrorless camera, either MFT or X mount, I’d like to adapt some of my extensive collection of SLR lenses to one such camera. While I know it will defeat some of the size-advantage, this is a necesary but temporary step while acquiring lenses for the mirrorless, some of which have no present equivalent for these systems.
While the answer to this question says AF is not possible, I am more concerned with being able to control the lens aperture at all. 95% of my photography is taken in A mode and I have lenses for all but one DSLR mount.
The questions are:
Is it possible to control aperture while using a mount-adapter and lens which does not have an aperture-ring?
Yes, but if you're not using an adapter that does electronic communication between the body and lens, it's a serious pain-in-the-butt. I've heard of it working the same way on both Canon and Olympus, so I'm assuming it may work on more than just those two systems, but you essentially mount the lens on a native body that does communicate with it, then you hit a DoF preview button, and unmount the lens while it's stopped down. Then adapt it.
And you have to do that every time you want to adjust the aperture. It's not particularly practical, but can work.
The easiest thing to do would be to get an adapter that supports electronic communication.
If so, for which combination of lens mounts is this possible?
Mostly the "smart" adapters have been for Canon EOS lenses (since Nikon only recently removed aperture rings with the G-series lenses, but Canon lost 'em back in the '80s) to the micro four-thirds, Sony E, and Fuji X mounts.
Are there specific models which support this?
Metabones is probably the best known maker of adapter rings that provide electronic communication when adapting to mirrorless, but with the full mount communication, they do also provide aperture control from the body. Most notably for Canon EOS to Sony E, Fuji X, or micro four-thirds (common usage pattern for some folks moving to mirrorless).
There are also adapters that come with their own aperture iris, but results can vary since the iris not being where the optical design expects it to be can introduce flare.
There are also some mounts (such as Nikon F), where the adapter ring can take advantage of an external aperture lever to control the aperture on the lens from the adapter ring. This is likely to perform better than an adapter with its own iris.
Correct answer by inkista on October 19, 2020
I'm not sure if you shoot Canon, Nikon, or something else, but I'm assuming Canon for the fun of it.
The Kipon adapter seems to be the main option for m4/3rds to Canon EF that is available right now. Here it is on Amazon - Kipon EOS-m4/3 Canon EOS to Micro Four Thirds Lens Adapter. A prominent photographer reviewed it here and seemed to give it favorable remarks.
If you want to go down the Sony NEX route, the Techart series seems to be the way with the Techart Canon EOS EF EF-S Lens to Sony NEX E Mount Adapter. Here is a fair review of it.
Depending on your needs, another option that is likely free to utilize is using the DoF preview button on a Canon DSLR first, then dismounting the lens at the same time. This will lock the lens to the selected aperture on the DSLR. This may be of limited value but it also may work in certain applications. I use this trick all the time for macro extension tubes for example(my set loses communication with the camera to control the aperture).
Answered by dpollitt on October 19, 2020
Depends on the lens and the adapter.
I have a M43 camera and use C-mount lenses via a dummy adapter. The lenses have aperture ring, so I can control the aperture with it.
I use Nikon-F lenses with (D-type) and without aperture ring (G-type). I have an adapter with aperture ring, so I can control the aperture.
Answered by roetnig on October 19, 2020
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