[aldous]

請賜教！選擇那一個？

兩個焦段在FF使用上，分別如何？

[bebest]

看你用的什么机器啦，
半幅机器50焦段相当于80视角，85则相当于135。
虽然赚了长焦视角，但最佳对焦距离没有了，如果是半幅机器还是推荐你用50

[since2000photo]

Some information

Canon 50mm f /1.4 $ 2,200-2,x00 second hand
Canon 85mm f /1.8 $ 2,200-2,x00 second hand

Canon without 85mm f / 1.4
only f/1.8 or f/1.2 ($ 15,xxx - 16,xxx second hand)

Samyang 85mm 1.4 $ 2,xxx
Carl Zeiss 85mm 1.4 $ 8,xxx

what i mean is you should compare with
50 1.4 and 85 1.8

I think they both great
85mm good for out door
50mm good for indoor

Is hard to use 85mm at home, always too close to the subject