Canon Lenses on Sony a7III ? I will be upgrading to full frame this summer and while doing research at my local camera store I looked at the Sony a7III, The sales guy said the Sigma...

NormanTheGr8 Loc: Racine, Wisconsin

I will be upgrading to full frame this summer and while doing research at my local camera store I looked at the Sony a7III, The sales guy said the Sigma adapter would work really well, "perfectly" with my Canon EF lenses .

Does anyone have any experience with this setup ?

CHG_CANON Loc: the Windy City

If you're going to change systems, change systems ...
Why would you think a Sony with Canon lenses is the best photography?
Particularly when Canon has excellent full frame bodies with both mirrors and mirrosless

zug55 Loc: Naivasha, Kenya, and Austin, Texas

NormanTheGr8 wrote:

I will be upgrading to full frame this summer

It seems that you have another issue as well. You are implying that your current Canon lenses are for a cropped-sensor system (APS-C). Using APS-C lenses in a full-frame camera is not recommended as you essentially get cropped images, which defeats the purpose of going full-frame. Regardless of system, you need full-frame lenses, and they tend to be heavier and more expensive.

If you have full-frame lenses, you may try the MC-11 adapter. I have no experience with it, so I let others comment on it. Or read reviews online. The Sony A7 III is a superb camera. I switched from a Nikon APS-C system and ended up buying new Sony lenses. A great lens for starters is the 24-105mm f/4--this was my first lens and still is my go-to lens. The Tamron 28-75mm f/2.8 is also highly regarded.

NormanTheGr8 Loc: Racine, Wisconsin

No I am not I said EF lenses of which I have a couple .I know the EF S lenses are not Full Frame (I really should update my profile lenses) and I might stay with canon but I can not afford to scrap my lenses and get new lenses all at once , Just exploring options .

CHG_CANON Loc: the Windy City

Sony is an excellent product, both the camera and image files and lenses. But, they're nothing revolutionary, now in 2019 relative to Canon / others, not in image quality, not in performance handling. Full frame, the combined system is not a large percentage difference in weight although the camera size is smaller vs a DSLR. The single most obvious difference is the cost of changing.

User ID

CHG_CANON wrote:

If you're going to change systems, change systems ...
Why would you think a Sony with Canon lenses is the best photography?
Particularly when Canon has excellent full frame bodies with both mirrors
and mirrosless

Amen to that.

I use many adapted EF lenses on Sonys. Not ideal in most
users' judgement, but I already owned the EF lenses, and
this was way BEFORE Canon's R-series was even a rumor.
IBIS is more important to me than SoTA AF, so the Sonys
serve ME very well.

Today, Canon has not fully addressed MY needs: No IBIS.
Some of my fave EF lenses lack IS [17-40, 20, 85]. But
if SoTA AF was my priority ... AND using my existing EF
lenses was important ... then in today's marketplace I'd
be better off with a Canon R body than adapting to Sony
just to have IBIS. I have three IS lenses from 24 to 300
and the three non-IS lenses would hafta go away. YMMV.

.

Blurryeyed Loc: NC Mountains.

NormanTheGr8 wrote:

I will be upgrading to full frame this summer and while doing research at my local camera store I looked at the Sony a7III, The sales guy said the Sigma adapter would work really well, "perfectly" with my Canon EF lenses .

Does anyone have any experience with this setup ?

I don't have experience with your camera but I did research the Sigma MC-11 because one came with a lens I had purchased for my Canon camera. What I found out after reading several reviews is that the MC-11 is supposed to be the best adapter. It was developed by Sigma to help sell their lenses to Sony users.

SteveG Loc: Norh Carolina

Blurryeyed wrote:

I don't have experience with your camera but I did research the Sigma MC-11 because one came with a lens I had purchased for my Canon camera. What I found out after reading several reviews is that the MC-11 is supposed to be the best adapter. It was developed by Sigma to help sell their lenses to Sony users.

Why not just sell your Canon lenses and use that money for Sony glass?

wireloose

I have the Sigma adapter and it works well with most, but not all, my Canon lenses on the A6500 and A7R ii. For some reason it doesnt like the 35mm f2. It does work on the 85mm f1.8 if thats the one you have. Not quite as fast as the native Sony glass but I still use the Canon- I have a 5D4- for sports, the Sony’s are great for travel as they are lighter and less conspicuous, I dont get the “no professional photography here sir” with them.

gwilliams6

CHG_CANON wrote:

If you're going to change systems, change systems ...
Why would you think a Sony with Canon lenses is the best photography?
Particularly when Canon has excellent full frame bodies with both mirrors and mirrosless

Wrong. I was a pro Canon user for 40 years and switched to Sony and have never looked back. Canon has NOTHING that matches the Sony Line of A7III, A7RIII or A9. The A7III is the best selling fullframe camera in the world (DSLR or mirrorless). And for good reason it was chosen as 2018 Camera of The Year by more authorities than any other camera. Canon's ff mirrorless EOS R and EOS RP are flawed and weak on performance. Don't believe the Canon hype. Most reviewers have debunked that Canon hype.

The A7III can be used well with Canon lenses with the excellent MC-11 adapter. The Canon lenses will work very well for stills with the adapter, but slower autofocus in video, but still ok. You can gradually change over to native E-Mount lenses from Canon. That is what I did. Cheers

gwilliams6

CHG_CANON wrote:

Sony is an excellent product, both the camera and image files and lenses. But, they're nothing revolutionary, now in 2019 relative to Canon / others, not in image quality, not in performance handling. Full frame, the combined system is not a large percentage difference in weight although the camera size is smaller vs a DSLR. The single most obvious difference is the cost of changing.

Wrong. Sony cameras have set the standard in revolutionary for FF mirrroless and no other maker has been able to match their overall superiority. They are the gold standard that others are trying to match. I was a pro Canon user for 40 years and switched to Sony and have never looked back. Canon has NOTHING that matches the Sony Line of A7III, A7RIII or A9. The A7III is the best selling fullframe camera in the world (DSLR or mirrorless). And for good reason it was chosen as 2018 Camera of The Year by more authorities than any other camera. Canon's ff mirrorless EOS R and EOS RP are flawed and weak on performance. Don't believe the Canon hype. Most reviewers have debunked that Canon hype.

The A7III can be used well with Canon lenses with the excellent MC-11 adapter. The Canon lenses will work very well for stills with the adapter, but slower autofocus in video, but still ok. You can gradually change over to native E-Mount lenses from Canon. That is what I did. Cheers

Blurryeyed Loc: NC Mountains.

SteveG wrote:

Why not just sell your Canon lenses and use that money for Sony glass?

Maybe because I don't own a Sony camera.... The lens I purchased was a 50mm Art for $750, probably the dealer, well known, trying to clear stock, it was at about $200 less than Adorama and B&H and it came as a combo with the MC-11 adapter for use on a Sony body. I researched the adapter prior to selling it on ebay so I actually only paid $600 for that lens brand new.... Pretty good deal, current lists for $950.

imagemeister Loc: mid east Florida

NormanTheGr8 wrote:

I will be upgrading to full frame this summer and while doing research at my local camera store I looked at the Sony a7III, The sales guy said the Sigma adapter would work really well, "perfectly" with my Canon EF lenses .

Does anyone have any experience with this setup ?

No direct experience with THIS set-up but lots of experience with Canon lenses. I have also read LOTS of reviews on the subject. So, I will make this statement - the most "perfect" (maximum) Canon lens performance will be realized using a Canon lens on a Canon body- period.

The Sigma adapter on the A7III works very well by most accounts - probably the best of all "adapters" - but not as "perfect" as using a Canon body or a Sony lens on the A7III. I would proceed with much caution if you require a very high level of performance !

..

jtwind

I've a Sony a7iii and use a canon mount tamron 100-400 with a sigma adapter and it works perfectly. I would love to have purchased the Sony 100-400 but this combination was half the price and since I don't use it lots has worked well. In general though am very, very happy with the Sony lens I have, 16-35 F4, 24-70 F2.8, and 70-200 F4.

tropics68 Loc: Georgia

zug55 wrote:

It seems that you have another issue as well. You ... (show quote)

The MC-11 was designed by SIGMA to use SIGMA EF mount lenses on an E-mount Sony. Not Canon lenses. That being said an awful lot of people use Canon lenses with it and have no issues. As for me I have also tried the Canon lens route with mixed satisfaction. I now use it almost exclusively with my SIGMA 150-600mm C mounted to my Sony A-6000. Kinda like an elephant riding a peanut but works flawlessly.