Kernel uses a threaded internal glass filter to block certain wavelengths of light from reaching the sensor.

PLEASE NOTE: This filter is only compatible with the Kernel cameras, not the Survey cameras.

Outer Diameter Threads: 25.4mm x 1-32 UN 2A (C Mount) pitch
Clear Aperture: 9.0mm
Filter Mount Thickness: 3.0mm
Mount Material: Black Anodized Aluminum
Filter Glass Thickness: 1.0mm
Filter Glass Surface Quality: 40/20