Hi all,
I have a problem with my sony 28mm f2.0 lens, - after having mounted it on my old NEX-5n, it no longer opens to full aperture of f2.0, only to to f3.5. It does not focus correctly, and there is now a massive barrel distortion. This problem is apparent on both, my 5N and A7r II. It looks like somehow the lens firmware got corrupted by Nex-5N. I called sony tech support, and they told me to send it in for repairs. It's out of warranty, the repair will cost an arm and a leg. There are no firmware updates available for this lens, so no way to refresh it. I do not understand how 5N could have messed up the lens firmware. Any advice will be greatly appreciated!
