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HANDBOOK OF PHOTOGRAPHY 



Table XVIII. — Exposures for Still Color Photography in Daylight 

 (Weston Ratings — 4 to 8) 



Table XII gives the exposures for still color photography in daylight. If possible, an exposure meter 

 should be used when exposing color film because of its small latitude; otherwise Table XII may be used 

 as a guide for suggested exposure. 



1. Film Speed. — The table is calculated for a film speed having a daylight rating of Weston 4.0 to 

 8.0. For conversion to other film speeds, shutter speed is inversely proportional to the Weston rating. 



2. Aperture. — Suggested exposures for five different standard apertures are given. For conversion 

 to other apertures see Eq. (23). 



3. Time of Day. — For use up to within 2J-2' hr. of sunrise and sunset except when taking sunrise and 

 sunset scenes. 



4. Subject: for Average Subjects. — Average subjects combine dark and light objects in approxi- 

 mately equal proportions. When in doubt, use exposures given. 



Light-colored subjects include snow and beach scenes, light-colored flowers, subjects with blond 

 complexions, light-colored buildings, and other subjects of similar character. In such cases the exposure 

 may be reduced from that given in the table. 



Dark-colored subjects include dark foliage, deep-colored flowers, dark animals, buildings, and similar 

 objects. For such cases the exposures given in the table may be increased. 



The exposure table may be used both for close-ups and distant views, but attention must be given 

 as to whether the subjects are of average brightness, light, or dark. 



5. Filters. — The exposures are based on the use of film without filters. If a filter is used, the time of 

 exposure will have to be multiplied by the filter factor. 



Table XIX shows the apertures and shutter speeds for giving the proper exposures 

 with color film having a speed of Weston 4 to 8 when used with the various sizes of 

 photofiood lamps now on the market. 



