Practos II exposure meter
Visual extinction meter employs rotating continuous wedge with numbers seen in telescope tube at the same time as a blue filtered image of the scene. Calibrated for film speeds 75-5500 H&D, 11-29 degrees. Sch.:f/nos.1.3-48. The shutter speeds are 1/400sec-60 minutes. FPS 1-128, With depth of field tables for 3 focal lengths. Practos, Hamburg.
Details
- Category:
- Photographic Technology
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/1806
- type:
- exposure meter
- credit:
- The Kodak Collection at the National Media Museum, Bradford
Parts
Instructions Sheet for Practos II Exposure Meter
Practos II exposure meter instructions sheet
- Measurements:
-
overall (folded): 73 mm x 57 mm
- Materials:
- paper
- Object Number:
- 1990-5036/1806/2
- type:
- instructions
Practos II Exposure Meter
Visual extinction meter employs rotating continuous wedge with numbers seen in telescope tube at the same time as a blue filtered image of the scene. Calibrated for film speeds 75-5500 H&D, 11-29 degrees. Sch.:f/nos.1.3-48. The shutter speeds are 1/400sec-60 minutes. FPS 1-128, With depth of field tables for 3 focal lengths. Practos, Hamburg.
- Object Number:
- 1990-5036/1806/3
- type:
- exposure meter
