Sigma 20mm F2 DG DN Contemporary

Took this out for some street photography in low light, and the f/2 aperture let me keep the ISO nice and low while still getting sharp results. The SLD element really helps with color accuracy, too.

Finally a compact 20mm that balances f/2 brightness without being a brick—the one SLD and FLD elements really cut down chromatic aberration on my Sony body. Autofocus is snappy enough for street shooting, and the manual focus ring has a nice damped feel.

Love how sharp the images are wide open at f/2, and the autofocus on my E-mount body is snappy and quiet. The lens feels solid but small enough to toss in any bag without a second thought.