Best portrait lens for the leica sl3?

For portraits on the SL3, I'd spend the money on the lens. The SL3 is full frame, so every lens frames as marked, and a longer portrait lens is easy to choose. These are my picks from the SL3 list:

• Leica APO-Summicron-SL 90mm f/2 ASPH: 90mm f/2. My first choice. It gives you room to step back and keeps the face flattering.
• Leica APO-Summicron-SL 75mm f/2 ASPH: 75mm f/2. A little closer and easier to carry.
• Sigma 85mm f/1.4 DG DN Art: 85mm f/1.4, a fast option for soft backgrounds.
• Leica Summilux-SL 50mm f/1.4 ASPH: 50mm f/1.4, if you want more of the scene around your subject.

Whichever you pick, window light will do more for the picture than the lens does. See portraits for the light tips.

Written by Claude from this site's pages.