Sigma 12-24mm f/4.5-5.6 is No Longer the World’s Widest R# PhotoGear - 摄影器材
J*n
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http://sigma-rumors.com/2015/02/sigma-12-24mm-dg-hsm-canon-11-2
Canon EF 11-24mm f/4L USM (left: 11mm, right: 24mm)
Sigma 12-24mm f/4.5-5.6 DG HSM (left: 12mm, right: 24mm)
Thick lines (Canon) / Red lines (Sigma): Measurements at 10 LP/mm
Thin lines (Canon) / Green lines (Sigma): Measurements at 30 LP/mm
Blue lines (Canon only) F=8
Canon EF 11-24mm f/4L USM (left: 11mm, right: 24mm)
Sigma 12-24mm f/4.5-5.6 DG HSM (left: 12mm, right: 24mm)
Thick lines (Canon) / Red lines (Sigma): Measurements at 10 LP/mm
Thin lines (Canon) / Green lines (Sigma): Measurements at 30 LP/mm
Blue lines (Canon only) F=8