[問題] 請問FF鏡用在APS-C上的畫質
若把FF鏡用在APS-C機身上 (以Canon為例)
APS-C的CMOS只取鏡頭中央大約50%的精華部份 (22.3*14.9)/(36*24)
註:b板友指正。之前(25.1*16.7)是抄wiki的,
剛看Canon官網是寫(22.3*14.9), 更正如上.
應該會把鏡頭周邊的易發生色散、畫質鬆散等缺陷都避開
照理講畫質應該會比較好
但以Sigma AF 35mm f/1.4 HSM DG | A ("Art")
這隻畫質大家都公認優秀的鏡頭來說
我看photozone的評測
一樣的鏡頭,它在FF的optical quality分數是4星 (得到highly recommended)
但APS-C上卻只有3星半 (沒有得到推薦)
連結如下:
http://www.photozone.de/canon_eos_ff/848-sigma35f14eosff?start=2
http://www.photozone.de/canon-eos/857-sigma35f14eosapsc?start=1
想請問到底是為什麼呢?
我現在有這顆鏡頭
最近想升級機身
若買APS-C的機身(如80D),是不是就發揮不出這個鏡頭的實力呢?
請大家給點意見
--
Brevity is the soul of wit.
這話可不是我說的........
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