Sony a 9 with Canon lenses: Does anyone have a Sony a 9 and use Canon lenses, like the 100-400mm ii for birding and sports. Would like to know how the auto focus works and quality of...

TheLensMan Loc: Jense Beach, Florida

Does anyone have a Sony a 9 and use Canon lenses, like the 100-400mm ii for birding and sports. Would like to know how the auto focus works and quality of the pictures. Thank you in advance for any info you can share. I am thinking about the Sony a9.

whitehall Loc: Canada

As compared to what alternative? 7d mkii or 5d mkiv? I would love to see the responses.

Lorendn Loc: Jackson, WY

I have a variety of Canon glass and recently have moved to Sony bodies and a Metabones iv adapter. My A7Riii does great with all the Canon glass except for my old 100-400 f/4.5-5.6 lens - original not the Mark 2. This lens is slower to focus than on the Canon bodies and at times will not auto-focus at all. I recently got the Sony A9ii and it does much better with all of the Canon glass.

Lorendn Loc: Jackson, WY

Continued:

I just did a comparison of the Canon vs the Sony 100-400 and was totally shocked by the much better image quality of the Sony over the Canon. The Sony 100-400 has the best IQ of any zoom lens I have used in this focal length range and I highly recommend giving it a try. Combined with the Sony 1.4x converter it could be a perfect hand-held birding combination.

ronichas Loc: Long Island

Lorendn wrote:

Continued:

I just did a comparison of the Canon vs the Sony 100-400 and was totally shocked by the much better image quality of the Sony over the Canon. The Sony 100-400 has the best IQ of any zoom lens I have used in this focal length range and I highly recommend giving it a try. Combined with the Sony 1.4x converter it could be a perfect hand-held birding combination.

I have the Sony A9 with the Sony 100-400. I was just in Florida doing some birding. I was very pleasantly surprised at how sharp the images were with that combo, handheld!

Architect1776 Loc: In my mind

TheLensMan wrote:

Does anyone have a Sony a 9 and use Canon lenses, like the 100-400mm ii for birding and sports. Would like to know how the auto focus works and quality of the pictures. Thank you in advance for any info you can share. I am thinking about the Sony a9.

The quality would not be affected as there is no element changing the optics which for the 100-400mm range there is no lens made that even comes close to its quality.
You will not have the same speed of focus as with a real Canon camera from research.

Toment Loc: FL, IL

Agreed, a7riii and 100-400 with 1.4 tc, great combo👍

imagemeister Loc: mid east Florida

TheLensMan wrote:

Does anyone have a Sony a 9 and use Canon lenses, like the 100-400mm ii for birding and sports. Would like to know how the auto focus works and quality of the pictures. Thank you in advance for any info you can share. I am thinking about the Sony a9.

GREAT question Darrell.......

Nalu Loc: Southern Arizona

I didn't even try it when I made the switch from Canon to Sony. I simply made the assumption that the combination of the A9 and with the Sony 100/400 was going to perform better with the native glass compared to the Canon option. I bought the A9 because of its AF speed and accuracy. Why would I put anything on this body that potentially could interfere with the optimal capabilities of the camera? I couldn't think of a single reason.

suntouched Loc: Sierra Vista AZ

ronichas wrote:

I have the Sony A9 with the Sony 100-400. I was just in Florida doing some birding. I was very pleasantly surprised at how sharp the images were with that combo, handheld!

Fabulous images!

ronichas Loc: Long Island

suntouched wrote:

Fabulous images!

Thanks so much.

wireloose

I have an A7Riii and use the Sigma mc11 adapter- was pleasantly surprised by the speed and accuracy of the 100-400 L ii on it, probably the best combo of all my Canon lenses.

wireloose

I have an A7Riii and use the Sigma mc11 adapter- was pleasantly surprised by the speed and accuracy of the 100-400 L ii on it, probably the best combo of all my Canon lenses.

DennisC. Loc: Antelope, CA

I have the A9 with 2 adapted Canon mount lenses and they work great with the Sigma MC-11. I tested the Canon 100-400 ver. II, it was very good on the A9 & A7R IV but I ended up getting the Sony 100-400 GM. It has become my favorite walk around lens.

bwana Loc: Bergen, Alberta, Canada

TheLensMan wrote:

Does anyone have a Sony a 9 and use Canon lenses, like the 100-400mm ii for birding and sports. Would like to know how the auto focus works and quality of the pictures. Thank you in advance for any info you can share. I am thinking about the Sony a9.

I don't have the a9 but use Canon lenses with Sigma's MC-11 adapter on both an A7S and A7 III with good results. I also have MetaBones III & IV adapters. Sigma's MC-11 is much better and less expensive.

However, I do much prefer Sony's 200-600mm.

bwa