Optolong UV/IR Cut Filter
1. Optolong UV/IR Cut Filter Introduction
Optolong UV/IR Cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are designed for the visible spectrum, because it’s very difficult to create a lens with the same focal point for the visible and IR spectrum.
Main Use and Performance
Suitable for color CMOS and CCD cameras and modified DSLRs.
Use with monochrome CCD for astrophotography.
Available to assist in focusing.
Act as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure.
WARNING: The filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.
2. Reference Spectrum
How to read the chart?
▲The horizontal axis is the Wavelength in Nanometers(nm).
▲The vertical axis is transmission in %.
▲The RED line shows the transmission of the UV/IR Cut filter.