TECHNICOLOR AND OTHER METHODS 195 



true, so should be avoided if correct coloring results 

 are desired. 



A three-color experimental camera has just been 

 made by Technicolor. This makes three frames at 

 once on three separate films with red, green and 

 yellow filters. It should give almost perfect color ren- 

 dering but with much added expense and weight. 



The two spectrum cameras valued at $10,000 each 

 are not sold but rented with their skilled operators; 

 for each piece of work or subject photographed, the 

 negative costs just five times as much as regular 

 stock and the print nearly four times the cost of 

 regular uncolored stock. Under those conditions one 

 going into color work must be prepared to foot the 

 bills. 



During one year I kept two cameras running al- 

 most constantly; one in the field part time and one 

 in the laboratory on lapse- time subjects and the field 

 one on lapse-time on my return from each trip. The 

 lapse-time work was the first of its kind done with 

 this Technicolor method. 



I also made the first microscopic Technicolor pic- 

 tures. This work was very difficult on account of re- 

 flections and the almost impossible place to see the 

 image to focus. The movements of protoplasm in 

 Technicolor are strikingly unlike those made in 

 black and white. And further work with that method 



