5N isn't much better for RF WA lenses than 7

Started Aug 5, 2012 | Discussions thread
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Emacs23
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5N isn't much better for RF WA lenses than 7
Aug 5, 2012

So, after some experience with my 18mm Super Elmar with both 5n and 7 I found both of them to be pretty crappy. The difference in how the degrade is displayed: 5n doesn't have much color shifting unlike 7. But it does have significant smearing. The lens itself when used with Leica M9 is very sharp across the frame at any aperture. With 5N and 7 it is very sharp too. But with 7 I have shifting, with 5n smearing.

The similar behaviour with Samyang (Rokinon, etc) 8/2.8. It looks sharper with 7 than with 5n at edges: http://forums.dpreview.com/forums/readflat.asp?forum=1042&thread=42187477

 Emacs23's gear list:Emacs23's gear list
Sony Alpha NEX-5N Sony E 18-55mm F3.5-5.6 OSS Leica Super-Elmar-M 18mm f/3.8 ASPH Leica Summilux-M 35mm f/1.4 ASPH Leica Summilux-M 50mm f/1.4 ASPH +3 more
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