I purchased a Rainbow Imaging adapter to be able to use my legacy Minolta A-mount lenses on my NEX-6. I'm finding I have mixed success with the adapter. My 50mm f/1.7 lens works great with it -- I'm able to focus reliably, and when I achieve focus the distance scale on the lens reads about what I'd expect. However, I can't get my 35-70mm to focus on anything other than about 8 ft away, and when it does focus the distance scale reads less than half of what the actual distance to the subject is. When placed on my old Konica-Minolta 7D, the 35-70mm can focus as close as about 3ft away and the focus distance matches the scale. Since the 50mm lens works just fine, it appears that the lens-flange-to-sensor distance of the adapter is correct. Is this a common problem with adapters (work for some lenses, not for others) or is there something I should be looking at? I've removed and reattached the lens (and adapter) multiple times to make sure it's seated properly. One nice thing is that, with the lenses that do work, the NEX-6's viewfinder is sharp enough that I can get the focus pretty close even without the focus assist features (enlarged view and focus peaking) although those certainly help with the fine-tuning.