對 1.9 &1.8 的意見:
*I have 50/1.9 before (over 25 years), now I'm using 50/1.8
*I still keeping it but I still prefer the 50/1.8. Even I also have the 50/1.9 . Because I like it's colour is more natural than the 1.9. But the most disadvantage of this two lenses is quit flat and not so sharp when you are taking picrures at infintive.