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Lindsey, W. F.

Publications and source records attributed to Lindsey, W. F..

A duplex schlieren system

Duplex schlieren optical system with one channel for data recording and second channel for visual monitoring

Lindsey, W. F.

An expansion of the ev system.

Expansion of EV /exposure value/ system, deriving equations relating photographic factors for basic and flash photography

Lindsey, W. F.

Stereo photomacrography system

Stereo photomacrography system provides sharply focused and correctly exposed stereo pairs of photographs through a stereomicroscope. The system uses components of the old system but incorporates a sharp focusing system and includes an improved photometer.

Lindsey, W. F.

Exposure Value /EV/ system expanded to include filter factors and transmittance

Application of the exposure value system requires that the system be extended to high brightness level and expanded to include filter factors. A minimum of four photographic factors are involved in the evaluation of an exposure which, when determined from tables of 1-stop interval, could introduce noticeable error.

Lindsey, W. F.

An expansion of the EV system

Expansion of additive value system to include filter factors and transmittance for high brightness electronic flash photography

FLASH