 | Front + Back | Back | Front | Back + Back | Front + Front |
Focal Length | 311mm/12.25 " | 476mm/19 " | 646mm/25.5 " | 273mm/10.75 " | 368mm/14.5 " |
Aperture Range | f/6.8 to f/90 | f/11 to f/90 | f/16 to f/90 | f/5.6 to f/90 | f/8 to f/90 |
Format | 8x10 inch | 8x10 inch | 8x10 inch | 8x10 inch | 8x10 inch |
Diagonal
Angle of View | 325mm/12.75 "
55 ° | 325mm/12.75 "
38 ° | 325mm/12.75 "
28 ° | 325mm/12.75 "
61 ° | 325mm/12.75 "
48 ° |
Maximum Useable
Image Circle at
Infinity
(Angle of View)
(Use Aperture) |
381mm/15 "
63 °
(f/16) |
452mm/17.8 "
51 °
(f/32) |
452mm/17.8 "
39 °
(f/32) | 324mm/12.75 "
61 °
(f/16) | 420mm/16.5 "
60 °
(f/16) |
Maximum Useable
Image Circle at
10 Feet and Less
(Use Aperture) |
420mm/16.5 "
(f/16) | 452mm/17.8 "
(f/32) | 452mm/17.8 "
(f/32) | 360mm/14.2 "
(f/16) | 460mm/18 "
(f/16) |
Flange Focal Distance
at Infinity | 312mm/12.28 " | 542mm/21.34 " | 733mm/28.86 " | 270mm/10.64 " | 367mm/14.44 " |
Filter Size | 77mm screw in Front Cell
62mm screw in Back Cell
62mm screw in Gold Ring (shutter front) |
Location Bore in
Lens Board | 65mm Standard for Copal #3 Shutter |
Overall Length | 85mm/3.35 " (Front + Back) |
Weight | 0.93 kg / 2.05 lbs. (with Front + Back) |
External Finish | Semi-gloss black anodised, with textured gold bevel ring |