The Fuji GF 63mm f/2.8 R WR is a normal range prime lens for the Fuji G-mount cameras. Key features include:

Fuji G-mount
Nifty Fifty (equivalent)
High-quality build
100MP+ resolving power
Nifty Fifty (Equivalent). With a focal length equivalent to 50mm after sensor crop factor, the GF 63mm f/2.8 R WR is the go-to standard prime for the GFX mirrorless. The f/2.8 aperture isn’t going to be optimal for candlelight portraiture, but it will allow pretty good low-light performance within reason.

Build Quality. Like the GFX, Fuji’s GF lenses are dust and weather-sealed for shooting in challenging conditions. Each lens features a manual aperture ring with new C (Command) position to allow aperture adjustment via command dial.