imagemeister Loc: mid east Florida

"about" - maybe. Exactly, mostly - NO.

wcmoorejr Loc: Birmingham Alabama

I have only bought 1 RF lens and that is the 18-150 that came with my R7 and I did that because it was the only way I could get the R7 without waiting 6 months to get a body only option. I use the canon EF-RF adapter. In the future I will probably replace my current lenes (when they break) with an RF equivelent but I am perfectly happy using all of my L lenes with the adaptor. I still use my 7DII as a backup body.

burkphoto Loc: High Point, NC

Using full frame dSLR lenses on adapters attached to full frame mirrorless bodies actually improves image quality in most cases, because:

> You get in-body image stabilization you didn't have on dSLRs.

> Advances in image processing and sensors bring out the best from great older lenses.

> Manual focusing aids in mirrorless bodies help us find focus when using older film lenses.

So I would say consider your circumstances.

Canon users can mount EF, FD, and FL lenses on Canon full frame mirrorless bodies with generally excellent results.

Nikon users can mount various older Nikon and Nikkor lenses on full frame mirrorless bodies (with all the usual annoying Nikon "gotchas" where certain lenses won't work universally). But generally, they can enjoy continued use of most recent optics.

When you get into mis-matches of brands and formats, that's where things start to fall apart.

Generally, there are few issues. However, if you have an old film lens that isn't very sharp, has coma and astigmatism, etc., you WILL notice these flaws more quickly on a mirrorless high megapixel camera.

If you adapt old full frame film lenses to Micro 4/3, the 2X crop factor will magnify all their flaws by 2X. That's why I don't do that. (I tried...)

Using an optical SpeedBooster adapter, will give you a stop or more of additional light when adapting a full frame lens to Micro 4/3, AND it will reduce the actual focal length by .71 or .64X. But it will introduce more flare and contrast reduction in back-lit situations, due to five extra glass elements.

Scruples Loc: Brooklyn, New York

Forgive my naïveté. I have always used Canon. After I let my AE-1 collect dust on the shelf, I switched to the EOS Rebel 2000. I had to buy a few new lenses because my old ones had a different mount. I used the 1v-HS without a problem. Then I switched to the 5D series again without a problem.

I was under the mistaken impression that Canon won’t allow 3rd Party adaptors. If that is the case, I will be looking for a mirrorless Canon. Thank you all my Fellow Hedgehogs!

🦔 🦔 🦔 🦔 🦔 🦔 🦔

BebuLamar

If I buy a mirrorless I would also buy new lenses for it.

bwana Loc: Bergen, Alberta, Canada

I agree 100%! My Canon and Minolta AF lenses work just fine adapted to my Sony mirrorless bodies.

bwa

Scruples Loc: Brooklyn, New York

I’m not sure what you mean. When I use my 150-600mm lens it is a monster rendering everything “front-heavy.”
To compensate I found an “L” Bracket that does the trick.
I tried to post a photo of the FOTGA L200 but I had difficulties. Try Google.

rehess Loc: South Bend, Indiana, USA

Actually, my Pentax DSLR {purchased used in 2015} did have IBIS. IBIS is not new with MILC!!!!

Mduffy910 Loc: Michigan

I assume there is the same issue using a DX lens on a full frame mirrorless with the adapter as there is with a DSLR full frame?

CHG_CANON Loc: the Windy City

Unsure what is the question. Maybe just some technical details will address.

Let's start with EF to RF, where RF is the new mirrorless mount, changing the flange distance from 44mm (EF / EF-S) to 20mm (RF). By removing the space needed for a flapping mirror, mirrorless lenses are designed to sit closer to the digital sensor. The EF to RF adapter performs two functions: (1) to add the space needed to move the EF & EF-S lenses back to their proper flange distance of 44mm, as needed for the legacy DLSR lens to properly focus. (2) to pass electronic controls as needed to drive the lens AF motor and to open / close the lens aperture, entirely electronic functions.

These electronic controls are Canon's secret sauce, how to control the EF / EF-S lenses and how to 'speak' to an EOS-R body. Canon beginning to support third-parties with these proprietary secrets allows for the creation of third-party RF-mount lenses and third-party EF-RF adapters. Time will tell when, who, and how good these third-party versions will perform as compared to Canon's technology.

Canon is only going to deliver adapters for Canon lenses and third-parties that mimic Canon's EF and EF-S mounts to RF. Adapting other lens mounts will be entirely third-party designs, like Nikon F-mount and similar D/SLR style lenses. Adapting non electronic lenses, like manual focus film-era FD lenses, is a relatively simple process as the adapter only has to place the lens to the appropriate distance of the legacy lens; no electronic communication is needed.

CHG_CANON Loc: the Windy City

Unsure of your assumed limitations / problems, but really, Canon has finally joined Nikon in their EF-S (DX style) lenses onto the EOS-R mirrorless bodies. That is, the EF-RF adapter also supports all of Canon's EF-S lenses via the same adapter. The adapted EF-S lens still throws a smaller circle of light onto the EOS-R sensor. For full-frame EOS-R bodies, the EF-RF adapter communicates the EF-S lens being used to the EOS-R bodies. Canon has hard-coded the cropping function for the EF-S lenses; you can't turn the crop off. Cropped EOS-R bodies have the smaller (cropped) sensor appropriate for this smaller image circle. Adapted third-party lenses of the 'DX style' will require the photographer to enable the crop function in the EOS-R, or to crop away the vignette in post processing of the image files.

Architect1776 Loc: In my mind

Perhaps with other brands but my EF-RF adapter has improved and sped up all my EF lenses regardless of age.
And they all 100% work as designed regardless of age.

burkphoto Loc: High Point, NC

Most dSLR manufacturers and the bulk of dSLR camera sales did not include in-body stabilization features. The major full frame vendors haven’t had it very long. So most switchers will find IBIS a pleasant surprise! The latest models have incredibly good stabilization systems.

rehess Loc: South Bend, Indiana, USA

Nikon users in particular act as though this is a new feature, but in would be nice for people to admit that Pentax was ahead in at least one case.

Grahame Loc: Fiji

Really?