Pentax SMC-FA 28-80mm f/3.5-5.6 MTF data
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Photodo MTF score: 2
Effective focal length: 29 - 76 mm
Weighted MTF for 28 mm: f3.5 0.58. f8 0.65
Weighted MTF for 50 mm: f4.5 0.58. f8 0.69
Weighted MTF for 80 mm: f5.6 0.58. f8 0.71
Average Weighted MTF: 0.64 Grade: 2.0
Weighted MTF 10 lp/mm: 0.76
Weighted MTF 20 lp/mm: 0.56
Weighted MTF 40 lp/mm: 0.32
Max distortion: -4.57% - 1.04%
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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