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Sony FE 50mm f/1.2 GM

MTF for Sony FE 50mm f/1.2 GM

Sony supplies fantasy MTF, meaning MTF that is computed from a computer model (not measured with a real lens), does not specify the spectral balance (green light, white light?), and worst of all, ignores diffraction, which is the dominant factor at f/8, causing a noticeable loss of both overall contrast and micro contrast aka brilliance.

UPDATE—not real MTF with any real lens: even my Sony contact with 30 lens samples has been unable to produce performance anywhere near what is claimed here and neither of us understands how Sony can claim this MTF. My speculation is some hand-built and hand-tuned sample, hopefully not outright shenanigans. And distance shots in the field show wild variations in sharpness—razor sharp as claimed in the center, but with a massive drop-off in the mid zones. See for example Rainstorm Over White Mountains and Late Day View to White Mountain Peak.

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Sony FE 50mm f/1.2 GM claimed MTF

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