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Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946)
The Photometric Calibration of Lens Apertures
SMPTE • Journal Article • [Active]
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Level 1 — direct dependents (docs that cite this doc)
- Standards and Recommended Practices[Active]
- Errors in Calibration of the f Number[Active]
- Report of Lens-Calibration Subcommittee[Active]
Level 1 — direct references (docs this doc cites)
- Stop Calibration of Photographic Objectives[Active]
- Twentieth Century Camera and Accessories[Active]
- A Lens Calibrating System[Active]
- A System of Lens Stop Calibration by Transmission[Active]
- 1 Pestrecov K. : Private communication ( 1945 ).EXTERNAL
- 5 The term “transmittance” is used for the ratio of the light transmitted to the light incident in accordance with the Optical Society of America Committee on Colorimetry Report, J. Opt. Soc. Amer. , 34 , 4 (Apr. 1944 ), p. 184 .EXTERNAL
- 6 Martin L. C. : “An Introduction to Applied Optics,” Pitman & Sons , ( London ), 1932 , p. 206 .EXTERNAL
- 7 Hardy A. C. Perrin F. H. : “The Principles of Optics,” McGraw-Hill Book Co. , ( New York ), 1932 , p. 272 .EXTERNAL
- 8 Walsh S. W. T. : “Photometry,” Constable ( London ), 1926 , p. 102 .EXTERNAL
- 9 As here used, a fractional stop is understood to mean the ratio given by the fractional power of √2, the ratio between two geometrical full stops; e. g. , ½-stop difference corresponds to the ratio 2¼ between the fractional stops, stop , etc. .EXTERNAL