Kolari Vision UV Bandpass Lens Filter (37mm)

The 37mm UV Bandpass Lens Filter from Kolari Vision is designed to work with a full-spectrum modified camera for true UV photography, skin damage analysis, forensic analysis, astrophotography, and other uses. Unlike many third-party UV filters that use interference coating, this one features absorption-based glass, doing away with the problem of inconsistent color across the frame.

The filter has a 50% transmission peak at 365nm, and >25% transmission in the 340-380nm range for high transmission. Average out of band rejection is >OD 4.3 (0.005%), with a minimum rejection of>3.5 OD (0.025%), so there is a high signal to noise ratio and no IR contamination. The filter is coated for durability. Due to the thickness of the glass, the filter is threaded on the rear side only.

This filter requires a full spectrum modification to be made to your camera in order to function properly. This entails manually removing the camera's low-pass filter and replacing it with a clear filter. Once that's done, the filter will work as intended. (Kolari Vision can make the modification for you at a cost if you send in your camera to them.)