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p.3 #7 · p.3 #7 · David at phillipreeve.net reviews Batis 25mm f/2 Distagon | |
Makten wrote:
No one said anything about "poor lenses". It was just an observation. Lenses with aspherical elements often have a a very smooth bokeh, which also seems to go with lower resolution or "bite" at pixel level. Maybe that's just a tradeoff given by the design, if you want smooth rendering. And if you want that smoothness, perhaps you want to use asphericals to keep the size down.
The circles of confusion will look (somewhat) the same in the plane of focus as in the bokeh, so I think that makes sense.
i have noticed this too with many new lenses, but it seems to be independent of aspherics and to occur more at infinity than closer distances. i suspect it's just lenses that aren't well corrected/optimized for infinity (likely optimized for test chart distance) and have a quicker transition to out of focus.
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