Clip-in/rear/drone

Kase Clip-in Filter
The amazing Clip-in Filter for System Cameras is not only a filter, but also a protector for the sensor. They click exactly in front of the sensor, so they can always remain installed, so it doesn't matter which lens you place on your camera. Available as an ND gray filter, UV filter and Neutral Night filter.
 

Kase Rear Filter
When using an ultra-wide-angle lens with the front-end filter, many landscape photographers complained about the burden they had to carry. Kase introduces a new lens-mounted filter that is small in size and portable. The Rear ND neutral density filter.