Featuring an aluminum frame with small built-in magnets, the UV/IR Cut Hot Mirror Magnetic Clip-in Filter for Sony E from Kolari Vision secures magnetically to the camera lens mount, and your lens then mounts on top. The filter sits securely between the camera and lens. It's compatible with full-frame Sony E-mount cameras.
The filter is designed to normalize your camera when it has either a full spectrum or two-spectrum modification. In either case, it allows light to pass normally to the sensor, so you can shoot normal photos.
The filter can only be used with a modified camera. A spectrum-modified camera is one in which the camera's native low-pass filter was removed in order to support certain IR filters for IR photography. If you have such a camera, this hot mirror filter will let you take normal photos without having to make any changes to the spectrum modification. The filter blocks IR light and some UV light, the same way the native low-pass filter that was removed from the camera during modification would have. The filter requires no exposure compensation.
The filter material is glass. A small removal tool is included but not required. The compact tool looks like a guitar pick and is included just in case, as the filter can easily be removed by hand.