Kenko Smart Circular Polarising Slim Filter - 52mm wander lanyard blackrapid a large backlit LCD screen

a large backlit LCD screen and eight different sizes of adapter ring

Irix 11mm F4 Blackstone Ultra Wide Angle lens - CANON EF Mount

depending on the angle of polarization

This is a good multi-purpose filter that can be left on the lens at all time for protection

All Sierra spotters feature Bak-4 prisms and are fully multi coated

Kenko Smart Circular Polarising Slim Filter - 52mm wander lanyard blackrapid a large backlit LCD screenThe Kenko 52mm Smart Circular Polariser is an ultra slim filter specially designed to reduce reflections and glare from non metallic surfaces, such as water and glass. It will also help to greatly reduce the softness which can be caused by atmospheric haze and will improve colour saturation as well as contrast in subjects such as blue skies and clouds.