HOYA RA54 Red Enhancer 52mm

HOYA RA54 Red Enhancer 52mm

This filter is also known as a "Didymium" filter.
It is used to enhance red, orange and brown subjects to give more color saturation and contrast, while having very little effect on other colors.
It can be used in many situations such as architecture where certain building features need emphasizing, or for landscapes to enhance foliage and rocky features, autumn trees and many more.