Orange is the 'medium' of the contrast filters for black and white photography.
Milder than red and stronger than yellow, it completely eliminates ultraviolet, darkens blues and greens and is excellent for telephotography of mountain and marine scenes.
Available in most sizes in medium #16 and dark #21.
Reviewed by 2 customers
Fine for CS work
This filter is normaly used in B&W photography but it is also used to filter out UV for forensic photograpy using an forensic light source.