52 



HANDBOOK OF PHOTOGRAPHY 



helow. While everj^ effort has been made to secure accuracy, there niaj^ be some 

 errors and omissions in the list. Also some firms have been omitted entirely as their 

 catalogues were not available at the time of writing. It should be realized that the 

 lens market is continually changing, old and unsatisfactory types being constantly 



Fig. 



71. — Bausch and Lomb Plas- 

 tigmat Portrait lens. 



li 



Fig. 72.— Beck 

 Isostigmar. 



withdrawn from circulation and new designs substituted. Also, various firms have 

 recently combined, thus eliminating a number of overlapping types of lens. Notable 

 examples of this are the Zeiss-Ikon sj^stem, containing Zeiss, Goerz, Ernemann, lea, 

 and Contessa-Nettel, which was formed in 1926. The Agfa Company has recently 



I 



Fig. 73. 



-Dallmeyer Stigmatic 



//4. 



Fig. 74. — Dallmeyer Stig- 

 matic //6. 



Fig. 75. — Dallmeyer 

 Stigmatic f/7.5. 



absorbed Rietzschel. Reichert has made no photographic lenses since the war, and 

 Beck has recenth^ given up all photographic lenses except the Hill sky lens. The 

 Gundlach-Manhattan Optical Company ceased operations a few years ago. Many 

 makers of cameras and enlarging equipment supply lenses, purchased from another 



Fig. 76. — Kodak f/2.7 cine Fig. 77. — Laack Polyxentar. Fig. 78. — Meyer Makro- 

 lens. Plasmat f/2.9. 



manufacturer, which are sometimes engraved with the name of the maker of the 

 apparatus. This accounts for a number of names which are not included in Table VI. 



Fig. 



79.— Plaubel 

 //3. 



Tele-Peconar 



80. — Rodenstock 

 Imagonal. 



Fig. 81.— Roden- 

 stock Pant agonal 

 wide angle. 



In addition to the types in Table VI, many firms have made in the past lenses of 

 the rapid-rectilinear, Petzval portrait and simple landscape types, all of which are now 

 obsolete but are still to be found in common use. Lenses of the rapid-rectilinear type 

 have been given various trade names, for example: 



