ZOMEI 77MM ND FADER NEUTRAL DENSITY ADJUSTABLE VARIABLE IN SOUTH AFRICA

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.When used in conjunction 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 problem The Min/Max marks do not rule out the existence of a margin of error. It 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 Shift The 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. Storage problem This 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.