Bolex's reflex H16 — the RX4 Super 16 with through-lens viewing for professional 16mm.
The Bolex H16 RX4 is one of the most advanced reflex variants of the Paillard-Bolex H16, featuring through-the-lens (TTL) viewing via a beam-splitter prism in the film path. The RX designation indicates reflex viewing with variable shutter; RX4 is one of the later refined versions. Super 16 conversion widens the gate to 1.78:1 for HD-compatible widescreen work.
Spring-wound motor, reflex through-the-lens viewing (beam splitter), 16mm film with Super 16 gate modification (1.78:1), variable shutter, C-mount lens compatibility, single-frame capability.
The RX4's reflex viewing solves the parallax problem of non-reflex Bolex models, making it significantly more practical for close-up and precise framing work. The Super 16 gate conversion improves scan quality for HD output. The RX series is the most sought-after H16 variant for working filmmakers.
Verify the reflex viewing system is functioning — the beam splitter should give a bright, clear ground-glass image. Check the spring motor runs at consistent speeds. Inspect the Super 16 gate modification carefully. C-mount flange depth accuracy is critical.