Focal Length: 24 mm
Focal Length effective: 24.9 mm
Equivalent 35 mm @ 33x44 mm : 19 mm
Image circle: 60 mm
Shift @ 33x44 mm: horiz. 3 mm / vert. 4 mm
Close focus distance: 0.60 m
Filter thread: 52.0 mm
Best f stop digital: f 8 - f 11
Shutter: Copal 0, 1sec - 1/500sec, B, T
Product remarks: Schneider Apo-Digitar 5.6/24 mm XL, special ALPA helical