The Cokin P027 WARM P-Series filter is a colour correction filter with the same purpose as filters 81A/81B, but with stronger effect. 81C decreases color temperature from 3600K to 3200K. These 3 filters 81A/B/C can be combined with each other for maximum effect. Ideal filter for landscapes or portraits (to warm-up the image). Cokin P-Series Warm Filters lend natural colouring to your photos by warming up and correcting ambient light. In portrait work, these warm filters give your models a sun-tan whatever the location or time of the year. Slightly orange tinted, Cokin P-Series warm filters adapt to every situation depending on the light available. Use with a film camera and daylight colour film, or digital (DSLR) camera under automatic mode.