Tiffen - Filter - linear polarizer - 46 mm

Polarizers provide color and contrast enhancement. Reflected light often shows up as whitish glare that washes out color in an image. A Polarizer corrects this problem producing deep, dramatically blue skies. It also removes glare from non-metallic surfaces, such as windows and water. Color saturation in general, especially outdoors, can be improved significantly. Linear Polarizers are used with most video and manual focus photo cameras. They are not recommended for auto-focus SLR cameras.