Lens Data

Focal Length: 90 mm
Focal Length effective: 90.69 mm
Equivalent 35 mm @ 33x44 mm : 71 mm
Equivalent 35 mm @ 40x54 mm : 58 mm
Image circle: 90 mm
Shift @ 33x44 mm: horiz. 20 mm / vert. 23 mm
Shift @ 40x54 mm: horiz. 13 mm / vert. 16 mm
Close focus distance: 1.50 m
Filter thread: 40.5 mm
Best f stop digital: f 5.6 - f 11
Best f stop film: f 5.6 - f 16
Shutter: Copal 0, 1sec - 1/500sec, B, T
Product remarks: Schneider Apo-Digitar 4.5/90 mm N, SB34, adjusted by Schneider-Kreuznach to ALPA standard, later special version with Rodenstock helical mount (actual version)