Professional quality, Multi-Coated filter. This Sigma EX multi-coated Circular Polarising filter can be used to remove or reduce reflections off non-metallic surfaces (e.g. when shooting through glass). It can also intensify the colour saturation of a blue sky.The filter can be rotated to vary the strength of the effect, which will be visible in the viewfinder.
Close-up Attachment LensesNikon’s highly portable, easy-to-use close-up attachment lenses screw directly into the front thread of your lenses - a simple , convenient way to increase magnification. Even when attached, you can still use automatic exposure control and TTL metering. And to improve image contrast and reduce flare, all lenses are treated with Nikon Integrated coating.Close-up lenses numbers 0, 1 and 2 are recommended for lenses
Neutral colour filters serve as lens protectors. They do not affect colour balance. In addition mulit-layer coating prevents light reflection, thus improving colour rendition.
ND filters subtract all light equally, so they have no effect on colour balance, but instead reduce the amount of light entering the camera. They are used to control depth-of-field by allowing a larger aperture without changing the shutter speed. They also prevent over-exposure in extremely bright light and when shooting beyond the aperture/shutter speed range possible with the film in use.
