Central sharpness is very good at f/1.8 and f/2, excellent from f/2.8 through ... The taller the column, the better the lens performance. CA (Chromatic Aberration) is measured with any in-camera ...

The workhorse lens in my collection is also my least expensive lens, and the one I've had the longest. It's the Nikon 50mm f/1.8 prime lens. It retails now at $100-$200, but when I purchased it ...