Not perfect, but more than enough for me. When the light permits, the aperture is 1 stop below the minimum and the images impress me with their level of detail. Chromatic aberration or soft edges are present but fortunately negligible. The design is also quite good, mostly made of plastic. I would prefer a metal mount, but I don't mind a plastic mount (I've had another one with a plastic mount for over a year: 40-150mm).
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