Is the tokina f rin 20mm f 2 fe af good in low light?

Here is what the site says about that.

From Tokina FíRIN 20mm f/2 FE AF: Tokina FíRIN 20mm f/2 FE AF: A prime lens by Tokina for Full frame cameras, 20mm f/2. Specs - Maker: Tokina - Focal length: 20mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E): as marked, 20mm. - On APS-C (Sony E): like 30mm on full frame; f/2 gives about the depth of field ...

From Sensor sizes: Is full frame worth it?: For low light, events, and portraits with very shallow depth of field, yes. For travel, street, wildlife on a budget, and most hobby photography, a good APS-C camera with good lenses is enough, and you'll carry it more. Lenses and light matter more than the last stop of sensor performance.

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