Archived posting to the Leica Users Group, 2020/03/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]As we would all expect, the new Apo-Summicron is so good that the corners even at f/2 are excellent. When files are opened in Photoshop with the color fringing option activated, the image is nearly perfect. However, if then processed with Gigapixel AI you get perfect sharpness corner to corner even at f/2. (Gigapixel AI does sharpen it off axis, noticeable mostly on the monitor at 200% magnification. The main thing the sharpening software does is extend effective DOF a bit.) This lens deserves the Leica "Apo" label without question. (I'm using it with a Sony a7r4, modified with the KoloriVision Ultra Thin cover-glass.) The 28 and 75 are my traveling duo. (Anyone want an older 75 f/2.5 cheap?) FWIW, Paul www.PaulRoark.com