Tamron SP AF 20-40mm f/2.7-3.5 Aspherical (IF) MTF data
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Photodo MTF score: 3.7
Effective focal length: 20 - 39 mm
Weighted MTF for 20 mm: f2.7 0.71. f4 0.77. f8 0.79
Weighted MTF for 28 mm: f2.8 0.70. f4 0.76. f8 0.81
Weighted MTF for 40 mm: f3.5 0.71. f8 0.82
Average Weighted MTF: 0.78 Grade: 3.7
Weighted MTF 10 lp/mm: 0.88
Weighted MTF 20 lp/mm: 0.73
Weighted MTF 40 lp/mm: 0.50
Distortion: -3.7% - 3.2%
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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