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Related Product
Related Faq
Q
Does the focal length change?
A
No, no focal length or aperture change. Works absolutely like the Canon original that I use.
Q
Q: Why is there a black cross?
A
Answer: All adjustable ND filters will have this problem, the larger the focal length used the smaller the impact of cross-hatching. There will be obvious cross-hatching and vignetting in the large stop of light reduction, continue to rotate the dark shadow will disappear naturally, which is a physical phenomenon, not a product problem.
Q
Is the bigger the multiple, the clearer you can see?
A
Of course, the multiple is not the only one, it mainly depends on the comprehensive factors such as aperture and focal length. For example, if the windows of a house are large, the light will be natural and the view will be clear, the same reasoning.
Q
Why does a black cross appear?
A
All adjustable ND filters will have this problem, the larger the focal length used the less the impact of the cross dark shadow. There will be obvious cross-hatching and vignetting in the large stop of light reduction, and the dark shadow will disappear naturally if you continue to rotate, which is a physical phenomenon, not a product problem.
Q
The filter can avoid the black cross phenomenon?
A
By design we can avoid the use of the filter in non-wide angle lens will not have dark corners, if your focal length is less than 24mm may still return to produce.
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