03-27-2011, 08:50 PM
[quote name='joachim' timestamp='1301257470' post='7152']
Horses for causes. An f/.95 lens is more than 1.5 stops faster than an f/1.7. If you need the speed you need the speed, if you don't be happy with the smaller, lighter and cheaper f/1.7 design.[/quote]
I believe that what Tiz was trying to say is that the 20/1.7 is sharper than the 20/0.95 if tested on the same aperture. Actually, the 20/[email protected] is sharper than the 20/0.95@f2. In that case, I'd surely prefer the smaller, lighter and cheaper f/1.7 lens, which - let's not forget - also gives me AF.
Horses for causes. An f/.95 lens is more than 1.5 stops faster than an f/1.7. If you need the speed you need the speed, if you don't be happy with the smaller, lighter and cheaper f/1.7 design.[/quote]
I believe that what Tiz was trying to say is that the 20/1.7 is sharper than the 20/0.95 if tested on the same aperture. Actually, the 20/[email protected] is sharper than the 20/0.95@f2. In that case, I'd surely prefer the smaller, lighter and cheaper f/1.7 lens, which - let's not forget - also gives me AF.