The Sinaron-WE incorporates new glass combinations including ED(extra-low dispersion) glasses making apo-chromatic correction of super-wide angle lenses possible for the first time.
The high maximum aperature of f/4.5 makes adjustments easier, and the working aperature of f/11-16 allows shorter exposure times for outdoor work. The use of an optional center-filter is recommended for critical work.
| Optical Construction | 8 elements in 4 groups |
| Aperture Range | f/4.5-f/32 |
| Covering Power | 110 degrees |
| Image Circle @ Infinity | |
| Image Circle @ Infinity | 131mm diameter |
| Shutter | Copal #0 |
| Shutter Speed | 1-1/500 sec., T, B |
| Flange Attachment Size | 32.5mm dia. x 0.5mm (std Copal #0 size) |
| Slip-on Cap Sizes | 70mm front, 60mm rear |
| Filter Size | 67mmEW |
| Flange Focal Distance | 55.5mm |
| Overall Length | 65.3mm |
| Weight | 350g w/o lensboard |
| Maximum Format Size | 6x12cm |