rvh23 Offline Upload & Sell: Off
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Despite some hesitation, I finally decided to try a copy of this generally well regarded zoom, and after sending back a decentered one first try, found a nicely centered one second time around.
Short conclusion for me is that, color issues aside which can be corrected, it can not compete with Loxia 21 and 25 at the long end of its range, where its performance is too soft for my liking. However, over the range 12-18, it does very well. Having sold my Batis 18 a while ago, it's nice to have the 18mm FOV back again, and this seems to be the zooms sweet spot with sharpness comparable to the Batis.
At the wide end of its range (12-15) it is also very good - in agreement with posts in this thread better than CV12 and CV/Lowa 15 primes in the far corners.
However, the Sigma 14/1.8 seems to remain in a class of its own in this range. Here are my corner sharpness tests comparing the Sony 12-24 (at 14mm) and the Sigma, both at F6.3. Extreme corner crops shown at 100%, focused for corners, negligible (default CR) sharpening, A7Rii (42mp).
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