Normal use of Heirou products will not produce vignetting and will not be affected by other lenses under normal conditions. 

There is an outer coarse thread although I haven't tried stacking another filter. 

There is an outer coarse thread although I haven't tried stacking another filter. 

Normal use of Heirou products will not produce vignetting and will not be affected by other lenses under normal conditions. 

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) 

1. The outer diameter of different diameters will be different, you can superimpose the filters, you can buy the same diameter filter superimposed (such as: 58 black soft filter, superimposed on the back of the 58 ND filter) 

K&F Concept 1/4 Black Soft Filter Product Features Reduces highlights and lowers glare. Surface high-tech film waterproof, scratch resistant and oil proof. Optical glass doubleside polishing techonlogy ensuring the HD image quality. Soften wrinkles, blemishes and pores while maintaining skin tone values, making wrinkles less noticeable. Creates a soft quality of light and pastel effect, delicate and hazy cinematic effect, provide a smoothing effect on skin tones. Uses K&F Concept Multi-layer Coating process to protect the filter effect between two pieces of glass, dosen't effect image quality. 

Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol. 

Hi this filter both side with threading can screw on more filters on top of it , if you didn't care about the vignetting in telephoto and wide-angle lens , youc an added both NDs and CPL . 

Hi, this filter can screw on other filter on it , just same size , such as 82mm black mist 1/4 filter can screw on 82mm cpl filter