MOTION-PICTURE PHOTOGRAPHY 



675 



night effects in the daytime. It is only necessary to use a light-red or orange filter to 

 hold back the blue radiation from the sky, which then photographs dark; while green 



4.00 



3.80 



3.60 



5.40 



3.20 



3.00 



2.80 



2.60 



2.40 

 ^2.20 

 1 2.00 

 D 1.80 



1.60 



1.40 



1.20 



1.00 



0.80 



0.60 



0.40 



020 

 



1.0 



LO 



Fig. 18A. 



Log Exposure 



-Z>-logio E curves of Eastman positive film, No. 1301. 



2.0 



260 

 240 

 220 

 200 

 L80 

 1.60 

 1.40 

 1.20 

 100 

 Q80 

 Q60 

 Q40 

 Q20 

 



8 



10 



260 

 2.40 

 2.20 

 2.00 

 1.80 

 1.60 

 1.40 ± 



(0 



1.20 l 



1.00 



0.80 



0.60 



0.40 



0.20 







2 4 6 



Minufes 

 Fig. \%B, — Time-gamma curve of Eastman positive film, No. 1301. 



foliage, reflecting red and infrared to a considerable extent, appears as though bathed 

 in moonlight. The speed of the latest infrared emulsions is not markedly less than 

 that of standard negative nor is the contrast much higher. 



