An infinity-focus scene is a demanding test where lens weaknesses are seen at their maximum. If present, field curvature, optical asymmetries, etc all pop out like mushrooms after a rain. In my testing over the years, many if not most lenses fail in some way at this test.
The ZM 35/1.4 Distagon exemplifies the very best I have seen for a 35mm lens.
With HD and UltraHD images and large crops in color and black and white, from ƒ/1.4 through ƒ/16 along with large crops.
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