These are full ND filters in which the surface is responsible for light reduction. It allows the extension of the exposure time in order to blur out movements such as cloud, water or people. This is done by means of a long exposure; any movement of people in the frame is short enough so that they won’t be registered on the camera sensor.
The filter is also applicable whenever we want to extend the exposure time; either because we don’t want to do so, with other exposure parameters available from the camera, or our camera does not allow for any shorter exposure because of its faster shutter speed.
For example, let’s say we want to take a picture with soft water (motion blur), and we know that our camera has a minimal native (not extended programmatically) ISO 100, and the lens is the sharpest at f/4.0-f/8.0. The optimal settings will include the ISO 100, an aperture of f/8.0, and although the time will depend on the amount of light (during the day it would usually be 1/100 – 1/2000), it is definitely too short a time to blur any movement. Therefore, we can choose a filter suitable for our requirements (with the desired density) to extend the exposure time.
The ND filters are available in different densities. The density range of filters reaches extreme values starting from ND4 to ND32000 (15-stops). As a result, each photographer – knowing their needs (and the limitations of their own equipment) – is able to choose something for themselves as well as the circumstances in which they would find themselves when photographing with them.
Irix Edge 100 IR ND8 0.9 3 Stops
Irix Edge 100 IR ND32 1.5 5 Stops
Irix Edge 100 IR ND128 2.1 7 Stops
Irix Edge 100 IR ND256 2.4 8 Stops
Irix Edge 100 IR ND1000 3.0 10 Stops
Irix Edge 100 IR ND32000 4.5 15 Stops
Highest quality optical glass
Nano coating for easier cleaning
Multi-layer anti-reflex coating
Frame made of highly durable aluminium
All lenses with a front thread diameter of
52, 55, 58, 62, 67, 72, 77, 82, 86, 95 mm