Blurry autofocus
Posted: Sat Feb 04, 2012 6:20 am
Hi,
I have an SLT A65. I have been using Minolta Maxxum lenses with 5 contact points, and with auto focus they don't focus nearly as sharply as manual focus, even though the green focus light comes on in both cases. I have a 50mm 1.7 AF that is very blurry at 20 feet with auto focus, quite sharp with manual focus. Up close, 6 or so feet or less, the auto focus is fine, very sharp. At first I thought it might have to do with the aperture, but it seems not to. I shoot manually, steady shot on, single shot/spot focus, illuminator auto. My lenses with 8 contact points (same as camera body) focus the same, auto or manual. Are the three missing contact points on the older Minolta lenses having an effect on focusing info getting back to the camera body?
Thanks for any info or ideas....
Love to ride
I have an SLT A65. I have been using Minolta Maxxum lenses with 5 contact points, and with auto focus they don't focus nearly as sharply as manual focus, even though the green focus light comes on in both cases. I have a 50mm 1.7 AF that is very blurry at 20 feet with auto focus, quite sharp with manual focus. Up close, 6 or so feet or less, the auto focus is fine, very sharp. At first I thought it might have to do with the aperture, but it seems not to. I shoot manually, steady shot on, single shot/spot focus, illuminator auto. My lenses with 8 contact points (same as camera body) focus the same, auto or manual. Are the three missing contact points on the older Minolta lenses having an effect on focusing info getting back to the camera body?
Thanks for any info or ideas....
Love to ride