Circular Polarizing Filters (CPL Polarizing Filters) cut reflected light from any direction to increase contrast and boost colour saturation and vibrancy. Ultraviolet (UV) are often used to protect the end of the lens, but they also reduce glare and the effect of UV light. Ideal for landscape photography Neutral Density Filters (Adjustable ND2 to ND400) are filters that can block out different wavelengths of light to increase intensity of the image, allow longer exposures, and help achive great effects with moving subjects such as water. MaD Cameras are a small independant business based i the UK. If you have any feedback we'd love to hear it and it will really help us out!