424 



HANDBOOK OF PHOTOGRAPHY 



up and will not be represented correctly. In print making, correct exposure is usually 

 that exposure which will just slightly tint the paper in the strongest high lights. Then 

 the shadows will usually be of the correct density if a paper of correct exposure range 

 has been chosen. 



Because of the shortness of the straight-line portion of the paper characteristic 

 curve, it is often impossible to obtain perfect reproduction over the whole range of 



1.6 



1.4 



!.2 



I.O 



c 



0) 



^0.8 



0.6 



0.4 



0.2 



1.943 



1.147 

 14.03 



L297 

 19.82 



1.448 

 28.05 



1.598 

 39.63 



0.093 0244 0.394 0.545 0.696 0.846 0.996 

 Log Exposure 

 05770 1.239 1.754 2.477 3.508 4.966 7016 9.908 

 Meter Candle Seconds 

 Fig. 8fl. — Characteristics of Velour Black (projection) papers varying from soft to contrast 



in grade. 



tones. If the extreme shadows are ignored, however, the exposure of the negative 

 can be so chosen that practicallj' perfect reproduction is obtained, on the proper paper, 

 over the greater part of the tonal scale of the original subject. It is also a fact that the 

 eye is not very critical to slight distortion of tone balances, while it is more sensitive 

 to fuzzy, out-of-focus effects and bad perspective. 



Extreme high lights and shadows suffer from decreased contrast, howeA'er, because 

 of the curvature of the Z)-logio E characteristic. 



