photozone CANON FF 50MP 測試左兩支鏡

11-24 L @ 11mm 收到F8 開始差 , F4邊位樣衰 , 14-18mm F4-5.6 好正 , 24mm F4一般 F5.6 好正 , F8又開始衰退

Canon EF 11-24mm f/4 USM L

http://www.photozone.de/canon_eos_ff/940-canon1124f4?start=1

SIGMA F2-5.6 最好 F4-F8 邊位好好

Sigma 24mm f/1.4 DG HSM | A ("Art") 

http://www.photozone.de/canon_eos_ff/944-sigma24f14art?start=1