This little lens is small, lightweight and sharp stopped down. Just a good all around walk-around or portrait lens. But the claimed aperture is kind of like my wife’s shoe size: she says she’s a size 6 but a 6.5 feels so much better that usually she buys a 7. This lens can shoot at f/1.4, as long as you don’t mind blurry images. But it’s so much better at f/2 that I shoot it at f/2.8 where it’s pretty sharp.