Genuine Hoya 52mm R1 Pro Red Filter. Made in Japan. Professional Quality Glass.

Used primarily for black and white photography. XO is highly effective for outdoor portraits because red is rendered dark while green appears lighter.<br><br>Great for correcting skin tones bringing out facial expressions in close-ups and emphasizing the feeling of liveliness. X1 is highly effective for indoor portraits under tungsten lighting.<br><br><b>FOR COLOR FILM:</b><br>These filters such as K2 (Yellow) G (Orange) 25A (Red) X0 (Yellow/green) and X1 (Green) are primarilly designed for use with Black & White film. However they can be used with color film to produce special color effects.<br><br>Y2 Pro filter especially useful for clear contrast between blue sky with clouds and foreground. Provides a natural tonal rendition. Often used for subjects at intermediate distances.<br><br>YA3 Pro filter increases contrast between reds and yellows. Particularly useful for distant outdoor shots taken with a telephoto lens. Also useful in color photography for spectacular sunsets seascapes e