The Cokin A123F filter allows you to tint a photo.At one end the filter is very blue and gently turns into a very delicate blue at the other end of the filter.The gradient passes through virtually the entire length of the filter.Cokin filters are mounted using a holder (holder), which is attached to replaceable mounting adapters, with diameters that can be adapted to your lens.System A (size S) is recommended for use with compact cameras with lens filters or amateur video cameras.