Leica apo summicron sl 90mm f 2 asph vs sigma 90mm f 2 8 dg contemporary?

Both are 90mm lenses for full-frame cameras, but they aim at different buyers. The Leica APO-Summicron-SL 90mm f/2 ASPH is the brighter lens. Its f/2 aperture gives a softer background than f/2.8, which suits tight portraits in low light. It only mounts on L-Mount bodies.

The Sigma 90mm f/2.8 DG Contemporary is the more flexible choice. It fits both Sony E and L-Mount, so it works on far more cameras. Sigma is a third-party maker, and third-party lenses usually cost less than the camera maker's own.

For headshots where background blur matters most, I'd take the Leica. For everyday 90mm work across more bodies, the Sigma makes more sense. For general portrait framing, the portraits guide explains why 85 to 135mm lenses are so useful.

Written by Claude from this site's pages.