The Cokin Z-PRO 231 UV Resin Filter is a wise investment. It helps protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs. If desired it can be left on the lens at all times for protection.
Haze filters provide additional benefits of correction for Ultraviolet(UV) light which can register on film and videotape as a bluish cast and can obscure distant details. Ultraviolet filters allow you to correct for the UV effect to varying degrees. Haze-1 filters absorb approximately 71 percent of UV.
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.
| Type | Z-PRO UV (Ultraviolet) |
| Size | 100 x 150mm (4 x 6"), 1.5mm thick |
| Grade | Not Applicable |
| Filter Factor | 0 |
| Multi-Coated | No |
| Rotating | No |
| Effect |
Reduces excessive blue Cuts through haze and can improve image clarity Protects front element of lens |
| Application | Helpful when photographing mountain and marine scenes, where increased haze threatens to make your photographs indistinct in color and clarity |
| Color Temperature | None |
| Construction | CR39 Resin |
| Front Filter Thread Size | Not Applicable |
| Front Lens Cap Size | Not Applicable |