ALBUM EQ SHOP › Lee Filters 21" x 24" Sheet - 285 Three Quarter CTO Image 1 of 1 Lee Filters 21" x 24" Sheet - 285 Three Quarter CTO $12.95 Converts daylight (6500K) to tungsten light (3600K). Add To Cart Added! Converts daylight (6500K) to tungsten light (3600K).