40.5mm Black Mist Filter 1/4 Special Effects Filter Cinebloom Black Diffusion Effect Filter for Camera Lens Nano-Xcel Series

SKU: KF01.1621

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Normal use of Heirou products will not produce vignetting and will not be affected by other lenses under normal conditions. 
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There is an outer coarse thread although I haven't tried stacking another filter. 
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There is an outer coarse thread although I haven't tried stacking another filter. 
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Normal use of Heirou products will not produce vignetting and will not be affected by other lenses under normal conditions. 
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1. The other end is threaded, and filters can be superimposed by purchasing filters of the same caliber (for example: 58 black soft filter, superimposing 58 ND filter on the back) 
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This filter will fit any lens with a 49mm filter thread 
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No. it is other way. Least strong is 1/8 then 1/4 and then 1/2. 
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Hi this filter both side with threading can screw on more filters on top of it. 
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Hi, please refer to this video https://www.youtube.com/watch?v=GpPPwc9H0q0 which briefly showcases the difference between the three series.