One of the most important accessories for landscape photography and capturing distant objects, polarizing filters come in very handy when used with DSLRs. The Nikon C-PL405 Slip-In Circular Polarizing Filter/Holder for 400mm f/2.8 ensures that your shots of those beautiful mountains or a splendid valley come out pristine and magnificent. This filter eliminates haze and other adversely affecting elements when distant subjects are photographed in sunlight. It helps eliminated reflections from glass and water, and also renders the sky in a deeper, more alluring darker shade.