A set of adjustable ND filters used to control laser intensity before the beam reaches the camera imager.

Filter Slides for LBS-300s Series and C-Mount Camera Slider Holders Designed for easy mounting, these filter sliders fit seamlessly into LBS-300s series and C-mount camera slider holders. Each slider contains two filters, and by combining different sliders, users can achieve variable light attenuation ranging from ND 0.3 (50% attenuation) up to ND 8.0 (attenuation by a factor of 100 million).

This is especially handy when trying to find the laser focus.