LAPSE-TIME PHOTOGRAPHY 41 



death is more dramatic than its birth; and then how 

 long the entire picture will hold the interest. No 

 matter how short the picture is, if it is sold to a dis- 

 tributor (like Paramount) you will be surprised how 

 they will cut it and still keep its high lights. As they 

 buy by the cut foot you are sure the picture is ruined 

 when the check comes, but when you see it on the 

 screen it tells its story very smoothly. 



From the scales given it is easy to figure out any re- 

 quired projection run for the subject. For example: 

 At sound speed of 24 pictures a second, fifteen min- 

 ute intervals for a week would be twenty-eight sec- 

 onds on the screen which is ample for almost any 

 flower opening if it takes a week for it to open. If it 

 takes only one day, two minute intervals would give 

 thirty seconds on the screen, and a picture must be 

 wonderfully full of action to hold the interest for 

 over thirty seconds, and both 35 and 16 mm. pic- 

 tures may be projected at either sound or silent 

 speed, with the same comparative results, but much 

 smoother at the sound speed. 



