The Canon HJ11ex4.7 BIRSE is a professional HD lens with various technical specifications suitable for broadcast and cinematography.
- Focal Length: 4.7 to 52mm
- Zoom Ratio: 11x zoom
- Aperture (f-stop): f/1.8 to f/22
- Image Circle: 11mm
- Mount Type: 2/3-inch bayonet
- Optical Performance: Offers sharp image quality with low chromatic aberration and minimal distortion.
- Servo System: 16-bit encoder for precise zoom and focus control.
- Focus Distance: 0.7 meters to infinity
- Field of View: 78.5° (at 4.7mm)
- Filter Size: 114mm
- Weight: Approx. 2.7 kg (5.95 lbs)
- Lens Type: HD Broadcast Zoom lens
- Built-in Optical Image Stabilization: Yes, for minimizing image shake.
- Rear Focus Mechanism: Ensures high precision and sharp focus across the entire zoom range.
- BIRSE (Back Focus Adjuster): Designed for maintaining consistent focus when changing focal lengths or zoom positions.
This lens is typically used in ENG (Electronic News Gathering) applications, live event broadcasts, and documentary shooting. It’s known for its compact design and high performance, particularly in demanding HD environments.
