Details of exhibit
- Exhibition:
- 1897 Forty-second Annual Exhibition of the Royal Photographic Society
- Exhibit title:
- Case of the New Stigmatic Lenses, f/6
- Exhibitor:
- J. H. Dallmeyer Ltd.
- Section:
- Apparatus
- Exhibit No.:
- 457
- Description:
- The construction of the lens is described in this JOURNAL, Vol. xxi., p. 167. In application it is practically four lenses in one:
1. A moderate-angle lens for ordinary work on the plate for which it is scheduled (as shown in the figure 457A).
2. A wide-angle lens when worked upon a plate two sizes larger.
3. The front lens, when screwed into the back cell, forms a single landscape lens, 1½ times the focal length of the entire combination (diaphragm set to f/11, as shown in the figure 457B).
4. The back lens forms a single landscape lens twice the focal length of the entire combination (diaphragm set to f/8.) - Exhibit type:
- Photographic equipment and supplies
- Process:
- [Not Listed] ()
- Award:
- medal
