670 



HANDBOOK OF PHOTOGRAPHY 



The Agfa Ansco Corp. likewise supplies a full line of motion-picture films, including 

 panchromatic, fine-grain background, title, and infrared negatives, and a positive 

 raw stock of standard characteristics. To avoid additional duplication, only the 

 two most important Agfa films are illustrated (Figs. 16 and 17). These are fast, 

 fine-grain, double-coated panchromatic negatives, Nos. 153 and 356. A slower 



L40 



120 



1.00 



D 080 



I Q60 



^Q40 



Q20 



8 10 



Minutes 



1.40 



1.20 



1.00 



0.80:^ 



060 S 

 o 

 040 



020 



20 



Fig. 



lOB. — Time-gamma curve of Eastman motion-picture negative No. 1201 (ortho- 

 chromatic) . 



1,25 



0.6 1.2 1.8 2.4 



Log Exposure (relative) 



Fig. \\A. — Z)-logio E curves of DuPont type 

 112 negative (orthochromatic). 



Fig. 11 B. — Time-gamma curve 

 of DuPont type 112 negative (ortho- 

 chromatic). 



Fig. lie — Spectrogram of DuPont type 112 orthochromatic negative (dayhght). 



panchromatic negative, Superpan No. 154, is not shown, but is included with 153 

 and 356 in a table of filter factors for Agfa negatives. (See Exterior Photography 

 and Filters, below.) 



The characteristics of the corresponding films supplied by DuPont are shown in 

 Figs. 11 through 14. In these figures, however, the wedge spectrograms accompany 

 the graphs. Development of these films took place in the ND-2 developer, the com- 

 position of which is given in Laboratory Practice. 



