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Love this lens, only lens i have seen that is sharp from edge to edge fully open.

I had no idea such a tool existed until browsing thru B&H.

This lens is probably the one of the best of the FA Limited's. Super sharp, even wide-open it is sharp edge-to-edge. The build is excellent as expected. The bokeh for a lens that has a 31mm focal length is out of this world good. Images are magic and give you a 3D look more than any other I have seen. The slightly warm rendering is also very pleasing. Highly Recommended !!

Bought these for deer hunting, open country with heavy wood areas and creeks.,these binoculars are absolutely clear edge to edge . They make the shadows more viewable so you can see where the game spends most of its time. These are best quality binoculars

This manual focus little lens is amazing, sharp wide open at F2.0 from edge to edge, stopping it down by just even one F stop it is as sharp as as a tack. Love this super wide angle lens, the manual focus with focus peaking is not a problem. The workmanship is as good if not even better than some of the Sony lenses.

Edge to edge at F2.8 (stopped down two stops) this lens is tack sharp. Wide open at F1.4 is slightly soft on the corners if you have a very discerning eye. However, in low light situations I wouldn't hesitate using F1.4 at all. Yes, you can buy a cheaper version from sigma, tamron etc. but you won't be as pleased with the results compared to this beautiful lens. Richard www.rawimagery.com

Excellent edge to edge for stopped down urban landscapes and wide open action photos (dancers). Expected Zeiss quality - got even more

This lens is already perfect at wide open F/2 and tack sharp from edge to edge. The most perfect fixed focal lengths lens I have ever owned or tried, and this is on the new Sony A7R IV 60Mp camera which shows any minor problem you would not even see or notice on a 24MP camera. When I looked at my first test shots and looking at them at pixel size, 100%, I almost fell off my chair. I have never seen such a super sharp lens with excellent contrast and beautiful colors like this one before. I am as happy with this lens as I could be, gorgeous lens, it is a steal for this price being an apochromatic lens. The in camera image stabilization works effectively enough and the manual focus with the focus peaking is fast and very accurate. Highly recommend it to anybody who would be interested in an Apo Macro and general purpose lens in this focal length.

This lens is mind mindbogglingly sharp even at wide open from edge to edge and corner to corner. Shooting across the street I could count the grass blades on the lawn.

sharp when wide open. Although this lens has purple edge, my K7 body is easy to fix it. With B+W CPL filter, I can get very good contrast image.