Specifications:(1 piece is included in the package)
Product: 312nm UV Pass Filter
Type:ZWB1(Equal to UG11)
Thread: 49mm
Filter Thickness:3.0mm
Application:UVPhotography
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!!!