tomtom50
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Veteran Member
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Posts: 3,244
Re: Minolta lenses on Sony A7
minoltak wrote:
Hi,
I lost hope that Sony would come with a new small sized FF A-mount camera and the A7 looks good and is small.
I have old Minolta lenses AF 17-36/2.8-4.0 D, AF 28-75/2.8 D and AF 75-300/4.5-5.6 D. Not a high grade lenses but all and full frame. Does anyone of you have an experience with any of these lenses with A7.
I’m afraid that the AF 17-35 might be a problem on A7.
I know an adapter is needed. Sony makes two adapters are they really better than from other vendors? Who else offers A-to-E-mount adaptors?
Would you please advice?
Regards
Jan
It is pretty simple.
3rd party adapters do not automatically control aperture of AF. Most allow manual movement of the aperture linkage. No exif data.
The LA-EA3 controls aperture and exif data is correct. AF is poor at best and non-existent with your screw-drive lenses.
The LA-EA4 has a pellicle like the SLT cameras, and it autofocuses quite well. The AF module is the same as the crop sensor Sony a65, so the 15 points are clustered in the middle of the frame.
A big goodness is that the Nex cameras all support AF micro-adjust for these adapters, so you can adjust out front or back focus.
It is a viable solution functionally, but by the time you mount A-mount lenses on the adapter the kit is no longer so compact (but still smaller than an a99). But the kit 28-70 is quite good, so you add a smaller lens to your kit.
For a compact option you could get a Sigma 30mm f2.8 ($170). It is cheap and small and light and the 10MP crop option is still 10M good pixels.