The Cokin A705 Cyan CC (CC30C) Filter is a colour correction filter that allows you to make pink tones more neutral in images. Ideal in an environment with predominant lighting. The abbreviation CC30C in the name indicates that it is a colour correction filter (CC) with a density of 0.30 in the colour cyan.
To find out which correction filter you need in a situation, you can use a colour temperature meter. The Cokin A705 filter has a size of 66 by 72 millimeters and is suitable for use in the Cokin A series filter holder.