Is the sigma 20mm f 2 dg contemporary good in low light?

Here is what the site says about that.

From Sigma 20mm f/2 DG Contemporary: Sigma 20mm f/2 DG Contemporary: A prime lens by Sigma for Full frame cameras, 20mm f/2. A small metal ultra-wide from the I series; sold as the 20mm f/2 DG DN Contemporary before 2025. Specs - Maker: Sigma - Focal length: 20mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E, L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, L-Mount): ...

From Sigma 28-70mm f/2.8 DG DN Contemporary: Sigma 28-70mm f/2.8 DG DN Contemporary: A zoom lens by Sigma for Full frame cameras, 28-70mm f/2.8. A small, light f/2.8 standard zoom.

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