256 Photography for the Sportsman Naturalist 



slow plate with the color screen. This with a 

 nine and a half inch Goerz lens stopped down 

 to F. 64. It all depends upon the speed of the 

 lens, the condition of the light, the density of 

 the color screen, the distance the lens is from 

 the flowers, and the color of the flowers. Dark- 

 colored flowers need a much longer exposure 

 than do those which are light in tone, and this 

 must always be taken into consideration. 



The light of early morning or late afternoon 

 is often deceptive, seeming to be much stronger 

 than it really is, and therefore the best time for 

 work is from about the middle of the forenoon to 

 the middle of the afternoon, or, say, about four 

 hours of the middle of the day. The light at 

 these hours, when the day is clear, is almost 

 absolutely steady. Never attempt to do any work 

 upon a cloudy day or one upon which the light is 

 at all variable, for you will find that you will lose 

 many plates through not being able to judge 

 accurately the length of time for a correct ex- 

 posure. 



Always remember that it is better to slightly 

 overexpose than to err in the opposite direction, 

 for an underexposed plate is almost useless, much 

 of the fine detail being entirely lost, while with an 

 overexposed plate one can so develop it as 

 to make an excellent negative ; that is, if the over 

 exposure is not too great. Of course a plate that 



