03-30-2015, 07:39 AM
(This post was last modified: 03-30-2015, 07:43 AM by Brightcolours.)
Even at f8 at 19mm, the borders are not as sharp as one would expect from just about any standard zoom, but that might be due to CA (it then not having been corrected, but masked rather).
My guess is that this lens is one of those examples where at MTF tests (distances) it has strong astigmatism, but at "normal" (read: medium to infinity focus range) it performs better than the measured numbers suggest. Like for instance the Voigtländer 20mm f3.5 SL II (N).
Not the worst results, but a bit silly that my EF-M 18-55mm f3.5-5.6 IS STM seems to outperform it. Considering that lens cost me, excluding shipping costs, $58 (for a new "grey box" copy).
My guess is that this lens is one of those examples where at MTF tests (distances) it has strong astigmatism, but at "normal" (read: medium to infinity focus range) it performs better than the measured numbers suggest. Like for instance the Voigtländer 20mm f3.5 SL II (N).
Not the worst results, but a bit silly that my EF-M 18-55mm f3.5-5.6 IS STM seems to outperform it. Considering that lens cost me, excluding shipping costs, $58 (for a new "grey box" copy).