fastest 28mm lens ever made for 35mm rangefinder…

The 28/1.9 Aspherical Ultron The fastest 28mm lens ever made for 35mm rangefinder…not a small lens but, it doesn't get better than this.
Bessa cameras (and others without a 28mm frame - Leica 0.85 etc.) require a 28mm finder that can be purchased separately.
75° diagonal angle of view,
Lens mount: L Screw
Lens construction: 8 elements (1 Aspherical) in 6 groups
Minimum Focus: 0.7m
Minimum Aperture: f22
Weight: 265g
Hood: Supplied
Filter Size: 46mm
Only available in SILVER finish, Black has been discontinued.