Specifications:(Filter and Ring are both included in the package)
Product:UV Pass Filter Black Glass
Type:ZWB3(Equal to UG5)
Size: M27
Transmission curve:(If you require the detailed transmission data,please contact)
Important:This is not a pure UV filter!!!
Ultraviolet black glass can transmit ultraviolet rays and absorb visible light, but it also leaks infrared rays, not only ultraviolet rays!!! There is no problem if it is used with a UV light source.
With IR converted camera, if you shoot with a full spectrum light source, the color of the photo will be red because the sensitivity of infrared is much stronger than that of ultraviolet. If you need to filter out infrared rays, you have to use it in conjunction with other filters!!!