تويت
Attachments and reflections Color combinations Dual - color , center - spot and graduated filters . suit a variety of subjects Most landscape photographers use graduated ( half colored , half clear ) filters to tint dull skies , adding mood . A dark gray filter , for example , gives an ordinary cloudy sky a stormy appearance Center - spot filters tint picture edges portrait photo graphers often use them to frame a face with a soft vignette of color . Dual - color or split filters give dramatic , surreal results . For best effect use them on simple , uncluttered subjects . The filter colors . sharply divide , but you can create a gradual change if you use a wide aperture , especially with a telephoto lens . A small aperture gives an abrupt division - this works best when you align the split with a strong horizontal or vertical line . Another way of making multi - color images is to give a moving subject three exposures through separation filters . The static elements accumulate a white light exposure and appear normal Moving elements , on the other hand , are speckled with color . Rainbow effect D For a result like this fountain shot first expose your image through a green , then a blue and finally a red density - balanced tri - color filter For a correct exposure multiply the fim ASA ( 2001 ASA here by three and set the dial at the nearest rating ( 640 ASA here ) . Then give the metered exposure for each step A tripod essential to keep framing exact so that white light areas appear normal Enhancing a dull sky For this shot of Point Lobos in California , the photographer used graduated tobacco fiter : He positioned it at an angle order to color only the grad overcast sky , leaving the rocks in the foreground unfiltered Read exposure before positioning the fe so that it does not after the TTL meter reading Color for mood To add delicate color to this shot of Japanese kites , Andrew de Lory used a yellow and magenta dual color filter on a 200 mm lens He set a wide aperture to soften the split between the colors
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