ZOMEI 77mm ND Fader Neutral Density Adjustable Variable Filter with AGC Optical Glass (ND2 to ND400)
Product Description
Rotating Ring to Choose Degree of ND: neutral density can be easily adjusted from ND2 to ND400 by rotating the ring. Allows Wider Aperture: large aperture is available to create depth of field easily, which helps separate subjects from their background. ?Allows Reduced Shutter Speed: Zomei variable ND filter provides great shutter speed flexibility and eliminates the need for multiple constant ND filters. Black Aluminum Filter Ring: black superfine grinding ring and the package of fashion and simply. Optical Glass Construction:well made from high quality materials, AGC optical glass, which meet the Requirements of European Union's standards of Environment Protection-ROHS. How to solve possible problems? Vignetting phenomenon 1.Due to the use of two lenses on the structure, the filter is thicker than ordinary filters. When using the wide-angle lens under 28mm, it may occur vignetting.2.Whenﾽusedﾽinﾽconjunction with other filters, it may occur vignetting. It is recommended to only use a ND filter. 3.Although the filter adopts the coating technology, it has no CPL polarizer effect and only dimming effect."X" cross phenomenon"X" cross on images is a common issue with wide angle lenses and variable ND filters. When the filter is adjusted beyond its capability according to the laws of optical physics, it may show a obvious "X" cross or trailing smear. To ensure uninterrupted imaging, we recommend that you should reduce the density of the filter until "X" cross or trailing smear disappears. Min/Max marks problemThe Min/Max marks do notﾽrule outﾽtheﾽexistence ofﾽaﾽmargin ofﾽerror.ﾽIt may not line up with the true minimum and maximum ranges. Lens cap or lens hood problem Lens cap or lens hood may not fit this filter. The outside thread is larger than the inside one, which is our special design. The wider front filter ring helps reduce the possibility of vignetting (the darkening of corners) at wide angle. If you still want to mount lens cap, you will need to take the filter off or use a lager thread cap instead.Color ShiftThe color of the image may vary between warm and cold. This is a common phenomenon of all variable ND filters. You need to adjust your white balance accordingly when set the ND filter to different ranges.StorageﾽproblemThis product adopts the coating technology. When the filter is not in use, please place it in the provided package and keep away from direct sunlight and hot or moist environments.
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