The GF50mmF3.5 R LM WR is the smallest and the lightest (335g) GF lens with a maximum aperture of 3.5 and focal length of 50mm (equivalent to 40mm in the 35mm film format). When attached to the GFX 50R, the combination weighs just 1,110g, making it the lightest GFX kit yet, and the perfect choice for street and travel photography.