|Focal Length (mm)|
|Max Aperture (f)|
|Min Aperture (f)|
|Flange-Focal Distance (mm @ ∞)|
|RF/L Extension (mm)|
Beseler Color Pro 50/2.8 [Kowa]
Enlarger lens made in Japan. Post-1985 version AKA Kowa/Computar 50/2.8 with addition of knurled (not embossed) aperture ring and longer mount thread. Beware high incidence of balsam separation.