Does anyone know why Sony (or 3rd parties) can't make a better adapter for their A-mount SSM and SAM lenses? For example, the relatively inexpensive Sony 28-75 f2.8 is a really good lens. I've tried several copies and they make sharp, contrasty images. However, the AF on my E-mount bodies (a9 & a6500) is hampered by the paucity of focus points. The limiting factor is obviously not the bodies, and I don't think it's the lenses. It seems to be the adapter!
Recently purchased this lens for my a6300 (KEH 130). It is an unusual A mount because it is a telephoto with optic stabilization--recent Sigma lenses for A mount don't have it. The lens is noisier than the HSM lenses but appears to focus quickly and accurately--probably not as fast as the Sony FE 70-300 which costs $1000 more.
Went down to our harbor (Bellingham) and took some BIF pictures) With a sky background the lens had no difficulty. Against a busier background it had some problems finding the bird.
Off to Alaska next week will test the lens further.
Hi! I have an A7 Mark 2 and the 28-70 kit lens. I am looking for a 2.8 zoom without having to drop $2200 for a G master 24-70. I see that with the LA-EA 3 adapter I can use Sony SAM and SSM lenses and it seems to AF pretty fast. My question is do after market lenses like Tamron 28-75 auto focus? I know lens have to have own motor that isn't screw drive and I think Tamron does? Has anyone had experience with 3rd party 28-70/75 2.8 lenses on a7MK 2 using the LA-EA3? Any help would be appreciated!