The Cokin Z-PRO 070 Incolor 1 Wide-Angle Center Spot Resin Filter has a clear spot in the center and allow for the portrayal of an object in diffused surroundings. This filter comes in two grades: #1 (070) and #2 (071), with the 071 having a greater effect. It consists of a gray outer area. The portion outside of the image center will be reproduced less sharp than the center.
This filter is commonly used in combination with color center spot filters for a more exaggerated effect. It is intended to be used with wide angle lenses. The filter effect is directly influenced by the f-stop and the focal length. The transformation is softer with wider apertures. The size of the clear circular area increases relatively with the selection of longer focal lengths.
The Z-PRO Series is recommended for focal lengths of 20mm onwards (in the 35mm format). This filter is made of CR39 Resin which is a reputable lightweight and unbreakable optical material also used for ophthalmic glasses.
Note: The exposure determination should be done without the filter. If the camera has the capability of spot-metering, then one can measure with the filter in place
- The size of the clear part in the center of the picture varies depending on the focal length and the aperture of the lens used
- Excellent for portraits when a special effect is needed
- Makes the background diffused while focusing attention on the center of the frame