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Sigma 20mm f/1.4 Arts qualities are world class in many ways.

Scores (no lens corrections)

RAW score

87

Resolution

83

Distortion

63

Vignet

93

Lat. C.A.

88

Scores (WYSIWYG)

JPG score

84

Resolution

Distortion

61

Vignet

72

Lat. C.A.

91

More

AF speed

Test camera

Nikon D810

Filter size (mm)

  • Camera mount
Nikon F