STC Optics has expanded its Clip Filter Series to include new filters for Panasonic Lumix M43 camera systems, as well as the Z Cam E2 4K Cinema Camera and Blackmagic Pocket Cinema Camera 4K. As with the existing Clip Filters, the new series is designed to be sandwiched between the camera body and lens, positioning the filter over the sensor instead of on the front of the lens.

STC explains that its Panasonic M43 Clip Filter is designed to fit in front of the shutter mechanism to avoid interfering with the camera's anti-shake function. All of the filters are made with Schott B2790 optical glass with double-sided NANO anti-smudge coatings and A2 stainless steel.

The new Clip Filter lineup includes a sensor protector filter, neutral density filters offered in N8, N16, ND64, ND400 and ND1000, as well as 590nm, 720nm and 850nm IR filters, a 625nm UV-IR cut filter and Astro filters in the following options:

- Multispectra Multi-Band Interferometric Filter
- Duo-Narrowband
- Bimodal Narrowband Filter​ ​
- Nightscape Starscape Filter

The STC Clip filters are available on Amazon UK for £81.99 to £91.99, depending on the model, with more options available on the STC website at prices ranging from $80 to $430.