The Nikon C-PL405 is the drop-in circular polarizing filter for specific Nikon super telephoto lenses. Key features include:
For Nikon 400 f/2.8E, 500 f/4E, and 600 f/4E
Reduces reflections and glare from non-metallic surfaces
Easy to install and use
Filter factor of 2 to 4x reduces exposures by 1 to 2 stops
Why Use It? Circular polarizers help to reduce reflections and glare from just about any non-metallic surface (think water, glass, electronic screens). They’ll clear up haze when shooting subjects at a great distance, all with a minimal drop in autofocus performance.
How to Use It. Just remove the drop-in UV filter near the lens mount, then replace it with this one. There’s a dial on the top of the filter holder that’s used to adjust polarization.
Filter Factor. Please keep in mind that this filter has a filter factor of 2 to 4×. This means reduced exposures by 1 to 2 stops.