BenQ Semi Long Lens (28.5-42.75mm, f/2.5-f/3.1)

Key Features

• Extended Throw Flexibility
  Focal Length: 28.5–42.75mm (1.5x zoom)
• Throw Ratio: ~2.2–3.6:1 – Ideal for medium-to-long throw distances in large venues.
• Projects 100" images from ~2.5–4.3 meters (8.2–14 feet).
• High-Performance Optics
  Precision multi-element glass lens – Minimizes distortion (pincushion/barrel) and chromatic aberration.
• Aperture Range: f/2.5 (wide) to f/3.1 (tele) – Optimized for brightness retention even at long throws.
• Anti-reflective coatings – Reduces light loss for enhanced contrast.
• Professional-Grade Construction
  Durable metal housing – Withstands 24/7 operation in demanding environments (e.g., museums, control rooms).
• Dust-resistant seals – Protects internal optics for long-term reliability.
• Manual Zoom & Focus Control