|Used primarily for black and white photography. 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.
FOR COLOR FILM:
These filters, such as K2 (Yellow), G (Orange), 25A (Red), and X1 (Green) are primarily designed for use with Black & White film. However, they can be used with color film to produce special color effects.