HD 4K Long lens with extender
(possible with digital remotes zoom +focus)
Key Specifications
| Parameter |
Specification |
| Lens format / mount |
2/3‑inch, B4 mount (suitable for broadcast 2/3″ sensor cameras) |
| Focal length (1×) |
7.6 – 175 mm |
| Focal length (with 2× Extender) |
15.2 – 350 mm |
| Zoom ratio |
23× optical zoom (plus 2× extender) |
| Maximum relative aperture (f‑number) |
f/1.8 over much of the zoom range (7.6‑119 mm), f/2.65 at 175 mm |
| With extender, effective aperture |
(Often quoted) f/3.6 to ~f/5.2 with 2× extender (derived from above) |
| Minimum Object Distance (M.O.D.) |
0.8 m (≈ 2.62 ft) |
| Angle of view (16:9) |
• At wide end (7.6 mm): ~ 64.5° × 39°
• At telephoto end (175 mm): ~ 3.1° × 1.8°
• With 2× extender: at wide ~35° × 20.1°, at tele ~1.6° × 0.9° |
| Object size at M.O.D. (16:9) |
• At 7.6 mm: ~ 915 × 514 mm
• At 175 mm: ~ 41 × 23 mm
• With extender: at 15.2 mm: ~ 473 × 266 mm; at 350 mm: ~ 21 × 12 mm |
| Filter thread / filter mount |
M95 × 1 mm / M107 × 1 mm (filter attaches to lens hood) |
| Dimensions |
Φ100 × 221.4 mm (diameter × length) |
| Weight |
~ 1.95 kg (without lens hood) |
| Drive / Servo / Encoders |
Uses digital servo for zoom & focus, with 16‑bit encoders (for virtual system / FIZ integration) |
| Iris / Aperture control |
Iris is servo / remote controlled (in broadcast / ENG use) |
| Optical features / coatings |
– Use of fluorite ED and super ED glass elements to reduce chromatic aberration
– HT‑EBC (High Transmittance – Electron Beam Coating) antireflection coating (reflection ≤ 0.2%)
– Barrel interior optimized to suppress flares / ghosting
– Low distortion even at ultra‑wide angle
– Nine‑blade iris for more natural bokeh |
| Focus type / internal design |
Internal focusing (so lens does not change overall external length during focusing)
Features like QuickZoom (instant push to tele for focus check) and Zoom Limit switch included |
| Image stabilization |
None explicitly stated; not typically included in such broadcast zooms |
Notes on S6 Variant / “BERD‑S6” vs S10, etc.
-
The “BERD‑S6” suffix indicates a particular servo / drive variant. For example, product listings refer to Fujinon HA23x7.6 BERD‑S6 as an ENG lens with digital servo for focus and zoom.
-
In many 4K broadcast lens listings the UA23x7.6 is paired with an “S10” servo/drive version: UA23x7.6BERD‑S10.
-
The core optical and mechanical specifications (focal lengths, aperture, size, etc.) are consistent between the variants; the difference lies in the servo drive electronics (control, interface, encoder outputs) rather than the lens optics themselves.
