trumpet_guy Offline Dedicated FM Upload & Sell: On
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cogitech wrote:
biotar wrote:
Has anybody tested this lens for field curvature?
A local member (I forget who now, maybe Tim/trumpetguy) noticed some significant field curvature when doing some landscape testing a while back.
This certainly could account for the disparity between PZ.de results and my real-world sample. In other words, my sample is in focus, and their testing of the corners (while it may have been in focus in the centre) was not.
While this is a lens aberration, it may also be positively contributing to other aspects of the lens' drawing style.
See here:
http://www.fredmiranda.com/forum/topic/832704/5?keyword=rokinon,field,curvature#7787583
There is major field curvature on this lens, though I only noticed it at
long distance shooting. In my mind this lens is excellent for close-in work,
near wide open. That seems to be where it is optimized for. For other shooting,
I still prefer the Zeiss C/Y 85/2.8 Sonnar.
It seems that Samyang has given us a one-trick or two-trick pony, if you will,
but those tricks are very impressive for such an inexpensive lens. More expensive
lenses are more "refined" but at this price you can afford to have some tools
in the toolbox that do only one or two things very well.
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