Is the voigtl nder ultron 40mm f 2 aspherical sl iis good in low light?

Here is what the site says about that.

From Voigtländer Ultron 40mm f/2 Aspherical SL IIs: Voigtländer Ultron 40mm f/2 Aspherical SL IIs: A prime lens by Voigtländer for Full frame cameras, 40mm f/2. Specs - Maker: Voigtländer - Focal length: 40mm (prime) - Maximum aperture: f/2 - Made for: Full frame sensors - Mounts: Nikon F - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Nikon F): as marked, 40mm. - On APS-C (Nikon F): like 60mm on full frame; f/2 gives about the depth ...

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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