“A World Of Gray Tones”
1.    Color filters are useful in black & white photography to give a truer rendition of the gray tones.
2.    There are approximately 200 shades of gray that your eye can recognize.
3.    B&W filters help maintain the proper brightness relationship between colors.
4.    There are three categories of B&W filters: correction, contrast, and haze.
5.    Lighter colored filters are generally used as correction filters in B&W.
6.    Yellow 8 is the most popular correction filter, because of the contrast it adds to landscapes and cloudy skies.
7.    Other popular contrast filters: deep yellow 15, orange 21, red 25, blue 47, green 58.
8.    Haze filters minimize haze to give clearer images of distant scenes. If you’d rather keep the haze: yellow 8, to reduce haze: deep yellow 15 or red 25, and to increase haze: 47 blue.
9.    Three most useful B&W filters: yellow 8, red 25, green 1 (11)
10.To lighten an object, choose a filter the same color as the object.
11.To darken an object, choose a filter color that absorbs the color of the object.
12.You cannot darken an overcast sky with a contrast filter. Use a Color-Grad® filter instead.
13.The same filters that darken blue skies also lighten skin tones.
14.A polarizer filter can be used with B&W film to achieve the same polarizer effect obtained on color film. – reduces reflections and glare / deepens sky tonality while creating contrast to white clouds.
Aerial Deep yellow 15
Architecture Red 23A

Clouds / Sky 
Natural looking sky
   Dark Sky
   Cloud elimination     

Yellow 8
Red 25A
Blue 47

Foliage Yellow 8
Preserve haze                                                         
   Reduce haze                                                                       
   Increase haze                                                         

Yellow 8
Red 25A
Blue 47
Infrared  Red 25A
Landscapes Yellow 8
Green 1
Marine Deep yellow 15
Portraits Green 1
Sand / Snow  Deep yellow 15
Sunsets Red 25A


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