Which Sony E/A adapter for 70-200 G SSM 2.8 lens?

[Robin W]

Hi,

I have an e-mount Alpha A7iii camera body and have just bought a used A mount 70mm-200mm G SSM 2.8 FE lens.  Which is the correct or best Sony adapter to buy, is iy the LA-EA4 or LA-EA3.  I am using the camera for sports/action photography so good continuous focus is important.

Thank you in advance.

[Pieter]

Have a look here:

 

Edited July 14, 2020 by Pieter
wrong link

[Robin W]

Thank you Pieter, I think that answers my quesion, LA-EA3 seems to be the one.

I was also thinking of buying a 2x Teleconverter to make the lens 140mm-400mm lens at f/5.6.  In your opinion would the combo of Alpha A7 III > SEL20TC FE 2.0 Teleconverter > LA-EA3 E to A adapter > A mount 70mm-200mm G SSM 2.8 FE lens work?

Any advice appreciated, would this even all work together and if so are there any compromises you can think of in this set up?

 

[Pieter]

No that won't work, the E-mount teleconverters only fit a select couple of lenses. Maybe if you fit an A-mount teleconverter between the adapter and the lens, but be sure to check if the 70-200 is compatible with teleconverters.

Regarding the best adapter: be sure to try before you buy. Based on the specs, the LA-EA3 has more advanced AF-capabilities but apparently it's quite slow. The LA-EA4 on the other hand focusses fast but only in a limited area.

Out of curiosity, why did you buy an A-mount lens for your A7iii? For the price of the lens plus adapter you can likely get the new Tamron 70-180 F/2.8. Also, the 2× teleconverter is half the price of the new E-mount Sigma 100-400.

Edited July 14, 2020 by Pieter