The Sigma EX DG UV Filter cuts haze for sharper black and white prints and corrects the blues and violets in color prints. The multi-coated reduce reflection and is designed to be used with multi-coated lenses to protect and reduce excess UV. Multi coated UV filter designed for outdoor photo, portrait photo and snap shot photo. UV filter has a filter factor of zero and requires no change in exposure.
About Multi-Coating And Digital:
Multi-coating can prevent light reflection, ghost light, internal reflection etc, making image clearer and sharper. It can dramatically improve image quality. This is specially important in digital cameras. Since the image sensors CCD or CMOS are highly susceptible to reflections, this stray light can ruin your photographs. Multicoated glass benefit substantially reduced light reflections, resulting clearer image with greater contrast.
Sigma EX DG:
The exterior of this lens is EX-finished to enhance its high quality and appearance. Designed for Digital
|•||Made from finest quality optically flat glass in Japan|
|•||Coated and heat treated glass to eliminate distortion and minimize light reflections|
|•||Absorbs ultra violet rays reducing the effects of haze|
|•||Eliminates bluish haze|
|•||Protects lens from scratches and dirt|
Features of UV filter:
Haze (UV) filters are wise initial investments. They help protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs. If desired they 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, videotape and digital recording media as a bluish cast and can obscure distant details. Ultraviolet filters allow you to correct for the UV effect to varying degrees. UV-Haze filters are helpful when photographing mountain and marine scenes, where increased haze threatens to make your photographs indistinct in color and clarity.
Without UV Filter
With UV Filter
|Name||Sigma 67mm EX DG MC Multicoated UV Haze Lens Filter 67|