The Cokin H270A Full ND Filter Kit consists of three Neutral Density plain filters and is designed to reduce the amount of light reaching the sensor, without affecting the colour balance. ND filters are generally used when using a long speed to capture smooth motion (EG waterfalls) and cut the amount of light entering the lens (by 1,2 or 3 stops) so you can get an all-around, well exposed image. The ND2 filter corresponds to a loss of light equivalent to one stop, the ND4 filter is a two stop decrease and the ND8 filter is a three stop decrease, allowing you to gain the aperture you need to enable you to play with backgrounds, distance and depth of field, or to use a slower shutter speed to give an impression of motion. The H270A includes 1 x P-Series Filter Holder, 1 x Cokin P152 Neutral Grey (ND2) P-Series Filter, 1 x Cokin P153 Neutral Grey (ND4) P-Series Filter, 1 x Cokin P154 Neutral Grey (ND8) P-Series Filter.
Introduction to the Cokin Filters
There are 4 different sizes of filters to choose from: A series / P series / Z-Pro professional series and X-Pro professional series. The Cokin P Series are for large diameter lenses up to 82mm. Recommended for focal lengths from 28mm onwards (35mm format). Specially adapted to today's digital SLRs. Filters are 84mm wide.
The Cokin size chart
What are Cokin filters made from?
CR-39 Organic Glass: All Cokin filters are manufactured from CR-39 organic glass - originally launched for the vision lens industry, CR-39 organic glass boasts several major features:
- Extra lightweight
- Highly resistant to shocks, meaning that photographers, videographers and cameramen can handle the filters in complete confidence and safety
- Excellent optical transmission and high compatibility to colouring, making Cokin filters the proven choice of photographers worldwide
How the Cokin System works
The Cokin Creative Filter System consists of three main components: A filter holder / Adapter ring and a Filter.
1. Screw the adapter ring onto your lens.
2. Slide the filter holder on the adapter ring until it snaps in place. The filter holder is now solidly attached to the lens, yet it can rotate both left and right.
3. Slide the filter into one of the filter holder slots. The one closest to the filter holder housing is the narrowest; it allows the use of round filters with notched edges (polarizer, star filters..). The two central slots are intended for square filters. The outer slot can be used either for an additional filter or for a coupling ring.
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||100 x 100 mm