Single Filter Holder for Large Format Cameras

This adapter allows you to mount a single filter in front of our large format cameras, including the Aluma AC series and the older STX and STXL series.  It is compatible with 50 mm square x 2 mm thick filters.

The adapter consists of two identical flat plates that gently clamp the filter in place, which is inserted under the front nosepiece adapter (the standard “STX style” adapter ring is shown here).  The mounting screws for the nosepiece adapter securely clamp the adapter in place.

Two sets of longer mounting screws are included.  The first allows for attachment directly to a camera, filter wheel, or AO.  The second, even longer set works with StarChaser SC-3.