The Horseman 35mm f/4.5 Apo-Grandagon Lens is a Rodenstock 35mm f/4.5 Apo-Grandagon with a standard Copal #0 shutter, but built into a Horseman-specific helical focusing mount and barrel assembly made to fit upon their SW612/SW612 Professional medium format cameras. Used with a 6x12 film back, this lens produces a 115° x 76° field of view, and upon the 612 cameras the helicoid focusing mount allows a minimum focusing distance of 1' (0.3m)
The Apo-Grandagon incorporates ED (Extra-low Dispersion) glass, to make truly apochromatic resolution from a super-wide angle lens possible for the first time. Its large maximum aperture of f/4.5 makes adjustments easier on the ground glass, and the f/11-16 working aperture allows shorter exposure times in outdoor work. The use of the optional #29225 center filter (HOCF67P2.5) is recommended for critical work, especially with transparencies.
Note! This lens does not allow shift with the 612 Pro camera.
| Optical Construction | 8 elements in 4 groups |
| Aperture Range | f/4.5-22 |
| Covering Power | 120 degrees |
| Image Circle @ Infinity | 125mm |
| Shutter | Copal #0 |
| Shutter Speed | 1-1/500 sec., T, B |
| Slip-on Cap Sizes | 70mm front, 60mm rear |
| Filter Size | 67mmEW |
| Minimum Focus Distance | 1.0' (0.3m) |
| Weight | 1.06 lbs (480g) |