这里是对Leica，Zeiss等镜头的一些专业评论。售价几千刀的镜头只能这样马马虎虎了

http://diglloyd.com/articles/UnderstandingOptics/understanding-MTF.html

“An extreme case of field curvature can be seen with the apparently terrible MTF for the Leica 35mm f/1.4 Summilux-R (below). The MTF curve dips to 0% MTF (no detail whatsoever) at the 12-13mm mark (about 2/3 from center).”

“Observe also that there is very strong astigmatism over much of the frame in the graph above (solid lines vs dashed lines).”

所有跟帖： 

• 咣当，ms你和镜头较上劲了。。。：） -彩虹坊- ♀ (0 bytes) () 09/03/2011 postreply 08:31:26

• 他一辈子都在和镜头较劲。。。：） -rnd- ♂ (0 bytes) () 09/03/2011 postreply 08:32:36

• 俺想做些科普。 -二泉映月09- ♂ (0 bytes) () 09/03/2011 postreply 08:33:20

• 是你的专业？ -家乐比海- ♂ (0 bytes) () 09/03/2011 postreply 08:37:22

• 是！俺有个光学PhD，二十几年的Academic & industrial经验. -二泉映月09- ♂ (0 bytes) () 09/03/2011 postreply 08:40:21

• 这个太专业了 -白鹤泉- ♀ (0 bytes) () 09/03/2011 postreply 15:56:43