Good With Supported Lenses
April 03, 2021
I purchased the adapter along with the a7iii body to allow me to continue to use my Alpha Mount lenses in conjunction with my a99 body. With the SAL-70200G 70-200mm F/2.8 APO G zoom, performance was about the same, but with more in focus shots than on the a99, but slightly slower performance, and a little hunting in low light/ low contrast (red logo on black leather) than on the a99 (which caught the focus quickly and smartly).
If anything, the focus was actually FASTER on the a7iii with the SAL-2470Z 24-70mm f/2.8 Carl Zeiss Vario-Sonnar T* AF SSM zoom. I expect similar results with the Sony SAL-1635Z 16-35mm f/2.8 Carl Zeiss Vario-Sonnar T* AF SSM zoom.
With both the Sigma 50 mm f/1.4 EX DG HSM AF, and Sigma 85mm f/1.4 EX DG HSM AF primes, the autofocus exhibited some of the "jackhammer" focusing issue (that originally needed re-chipping for the a99); more so with the 85mm than the 50mm. It was not unexpected and not a deal breaker.
The only disappointment was that af does not work with the Sony SAL-135F18Z 135mm f/1.8 ZA Carl Zeiss Sonnar T* AF prime. I do ted to grab manual focus with this one a lot, but I do hope Sony will eventually provide a firmware update for this lens with the a7iii.
3 Days after getting the camera and adapter, it was out in the field working right next to the a99.
All in all, pretty satisfied; hoping for a new firmware update to include the a7iii.... Read More
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