The old Summaron screw mount lens (Picture credit: B&H)
Some more information on the upcoming/rumored Leica Summaron-M 28mm f/5.6 lens:
- The new Summaron is the same design as the old one
- Updated coatings
- Same size and weight as the original version (see specs below)
- Likely to be part of a new family of lenses
- Will nor compete with the currently available Leica M lens designs
Here are the specs of the previous Leica 28mm f/5.6 Summaron screw mount lens #11001 (made from 1955 to 1963):
| Filter Size | A36 |
| f/Stop Range | f/5.6-22 |
| Minimum Focus Distance | 39.3″ (1m) |
| Angle of View | 76 degrees |
| Groups/Elements | 6/4 |
| Length | .7″ (18mm)” |
| Maximum Diameter | 1.85″ (48mm) |
| Weight | 5.5 oz (154g) |
Additional links on the original Summaron lens can be found here and here, sample photos are available on flickr.
If you have any more information on this new lens, you can contact me anonymously here.
