77mm ND4-ND64 (2-6 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 with 28 Layers of Anti-reflection Green Film, Two Orange Levers, Nano-Xcel Series
SKU: KF01.1917
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All variable ND filters have this problem: The longer the focal length, the less the cross shadow is affected. Cross shadows and vignetting are obvious in large light reduction gears. As you continue rotating, the shadows will naturally disappear. This is a physical phenomenon, not a product issue.
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The design allows us to avoid vignetting when using this filter on non-wide angle lenses, but it may still occur if your focal length is less than 24mm.
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Lens caps can be installed, but the lens caps must be increased by two sizes. For example, if you purchase a 67mm filter, you will need to attach a 77mm lens cap.
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No, the pin is fixed.
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The filter only has a thread to screw it onto the lens.
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No, the polarization function is always present, but you can adjust the polarization angle to reduce the influence of the polarizer.
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The cover cannot be installed. To avoid the problem of vignetting, the filter specifically increases the aperture of clear light and also increases the outer diameter of the frame.
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There's a front thread that allows you to mount another filter in front of the Black Mist filter, as long as the two larger diameters are the same. For example, if the filter is 67 mm, you'll need to install a 77 mm one.
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Yes, this filter is a VND+CPL 2-in-1 filter.
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Your camera may have an automatic mode active that automatically adjusts the shutter speed. When using ND filters, always try to switch to manual mode so the camera doesn't try to compensate for the lack of light by adjusting the ISO or shutter speed.