On Thu, 4 Feb 2016 22:18:06 -0800 (PST), Rich A
wrote:

They are a bit stung by criticism about their ability to build decent lenses on their own (without Zeiss's help, though Sony do have couple decent lenses of their own) and also, expensive lenses are probably a key profit centre for camera makers now that the low and middle end of the camera market have been decimated.

http://www.dpreview.com/news/0359260...s-for-fe-mount

Lines per mm are not a suficient criterion. Distortion is of equal
importance.
--

Regards,

Eric Stevens