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Photodo stats
1102 lenses 428 MTF tests 74 in-depth photodo reviews 100+ users join each day Help the lens community by reviewing or rating a lens today via our lens search | Nikon 400mm f/2.8 IF-ED MTF dataHaving trouble understanding these graphs? Read a guide to understanding them here. Photodo MTF score: 4.1 Effective focal length: 396 Weighted MTF for 400 mm: f4 0.83. f8 0.81 Average Weighted MTF: 0.82 Grade: 4.1 Weighted MTF 10 lp/mm: 0.89 Weighted MTF 20 lp/mm: 0.79 Weighted MTF 40 lp/mm: 0.59 Distortion: % - % 
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