What are the different types of lens filters, and are they useless now with editing software? This guide will walk you through what they are for, and why they are still good. http://xlightphotography.com/types-of-lens-filters/
2) UV FILTER • UV filters reduces the amount of ultra-violet light entering the camera, thus reducing the blue tint. • Also commonly used as a “better clear filter” to protect the lens.
3) CPL FILTER • Circular polarizers (CPL) are normally used to reduce reflections and glares. • Some good CPL filters also boost the contrast as well. • A landscape photographer’s favorite.