08-13-2014, 01:08 PM
Need vignetting not be cosnidered when we talk about "sweet spot" of a lens?
Yes an f2.8 lens can be very sharp at f2.8 from center to corner if the lens is well designed. But more often this is not the case.
In addition an f1.8 9mm lens would be great for low light indoor photography (at least in situation when you need such a wide lens indoor).
Yes an f2.8 lens can be very sharp at f2.8 from center to corner if the lens is well designed. But more often this is not the case.
In addition an f1.8 9mm lens would be great for low light indoor photography (at least in situation when you need such a wide lens indoor).