Sigma 28-45mm f/1.8 DG DN Art Review: Limited Zoom, Maximum Light
Sigma introduced the world's first full-frame, mirrorless, f/1.8 lens: the 28-45mm f/1.8 Art. But if no one has ever made a lens like this before, do we even need it? Let's look at the facts with this rather odd entry and see if it's a hidden gem or a mad science experiment.
