Is the leica sl3 good in low light?

The site doesn't have a specific low-light rating for the Leica SL3, so I can't tell you how it compares at high ISO. What I can say is that it's a full frame camera with a 60-megapixel sensor. My sensor guide says full frame gets roughly one stop of low-light advantage over APS-C at the same framing and f-number. For dim scenes, the lens matters as much as the body, so look for fast glass like the Leica Summilux-SL 50mm f/1.4 ASPH, the Sigma 35mm f/1.4 DG DN Art, or the Sigma 85mm f/1.4 DG DN Art. If low light is your main job, the Leica SL2-S is the one I'd look at, since the site describes it as better suited to low light and video, though at 24 megapixels rather than 60.

Written by Claude from this site's pages.