philber wrote:
AmI wrong in wondering whether out-of-focus is the same as smearing? IN my experience, among others with NEX 5, which did smear corners with quite a few lenses, never did the result look like those of a lens with field curvature and misfocused corners. So why am I reading so many comments about FC and mis-focused corners? Am I missing something?
You are reading about smeared corners because:
1) The new e mount results in the sensor being very close to the lens which results in light coming in at a exteme angle (not direct) when using wide rangefinder lens. This has worked with film in range finders because the film is less sensitive to this issue. Leica has solved [hidden] this problem with a software adjustment. But now sony has the problem. It results in smeared edges when using rangefinder (small) lens at <50mm lens.
2) However it has got people pixel peeping at the edges and what they are finding is those lens that they thought were great (because they were not looking in the edges) are not so geat.
So a real problem for low mm rangefinder lens has got people noticing that even longer lens that are thought to be good may not be so good in the edges.
The discussion should be good for lens in the future (attention will cause it to be fixed in newer lens) but not so good (people are not going to buy them as much) for historic lens which have weak edges.
Nov 20, 2013 at 02:05 PM
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