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Figures (7)

Fig. 1
Fig. 1

Microdensitometer tracing showing the graininess of contrasty, slow bromide plate.

Fig. 2
Fig. 2

Wedge spectrogram showing Type G sensitizing.

Fig. 3
Fig. 3

Wedge spectrogram showing Type H sensitizing.

Fig. 4
Fig. 4

Wedge spectrogram showing Type J sensitizing.

Fig. 5
Fig. 5

Wedge spectrogram showing Type F sensitizing, Emulsion Type III

Fig. 6
Fig. 6

Wedge spectrogram showing Type N sensitizing.

Fig. 7
Fig. 7

Wedge spectrogram showing Type Q sensitizing.