The NC 72 Neutral Color 72mm Filter will protect the front lens element of certain lenses that have a 72mm filter thread.
The filter does not affect the colour hues (visible light spectrum); the multi-coloured glass of the filter is designed to reduce flare as well.
These filters serve as lens protectors and do not affect color balance. A neutral clear, multi-coated filter that helps to reduce flare and ghosting as well as protecting the front lens surface from the elements.