For photographic purposes this same apparatus may be had with Nieser's photographic camera, plate holders, focussing plate etc.
| No. 111. | Edinger's Projection Apparatus with Camera for plates 9×12 cm and 13×18 cm | $38.— |
| No. 112. | Larger Projection Apparatus with Camera for plates 9×12, 13×18, 18×24 and 24×30 cm | $56.— |
The following Objectives of 24, 35, 42 and 64 mm focal distance respectively may be used in connection with this apparatus for photographic purposes.
| No. 113. | } { of 24 mm focal distance | $18.— |
| No. 114. | } Photographic Objectives { " 35 " " " | $18.— |
| No. 115. | } with Iris diaphragms { " 42 " " " | $18.— |
| No. 116. | } { " 64 " " " | $20.— |
The following table shows the size of the preparation which may be resolved by each one of these objectives and the magnification with the smaller and with the larger Edinger Projection Apparatus.
| Objective Focal length | Size of the Preparation Maximum | Magnification Smaller Apparatus | Magnification Larger Apparatus |
| 24 mm | 8 mm | 7-15 diam. | 13-25 diam. |
| 35 mm | 15 mm | 5-12 diam. | 10-20 diam. |
| 42 mm | 20 mm | 3-9 diam. | 6-13 diam. |
| 64 mm | 35 mm | 2-4 diam. | 3-8 diam. |
The time required for exposure in photographing with this apparatus is from 5 to 20 seconds according to the magnification and character of the specimen.
The following figure shows a further use for the Objective of 64 mm focal distance in connection with the photomicrographic apparatus (page [82]).
