In practical monitoring terms, The B4 mount LA16X8BRM-XB1A 2/3" 4K Lens from Fujinon is an 8-128mm zoom lens developed for the Blackmagic URSA Broadcast camera. This dedicated lens contains electronic back focus adjustment and a macro function at its front. The included focus/zoom servo unit suits this 4K lens for ENG or studio use. Additional attributes incorporate a f/1.9 to f/2.8 highest aperture range and a M82 x 0.75 filter thread. This lens is provided exclusively as part of a Blackmagic URSA Broadcast camera kit.

A Closer Look at Fujinon LA16X8BRM-XB1A
B4 Lens Mount
Developed for use with the Blackmagic Configuration URSA Broadcast camera,
this lens has a B4 broadcast-style mount.
Compact and Lightweight
This space-efficient and lightweight 16x zoom lens weighs just 3.5 lb.
Electronic Flange Adjustment
The convenient electronic back flange adjustment helps to save
time on set.
| Sensor Compatibility | 2/3" (16:9) |
| Focal Length | 8 to 128mm |
| Built-In Extender | No |
| Zoom Ratio | 16x |
| Angle of View |
16:9 Wide: 61.86 x 37.25° (H x V) Tele: 4.29 x 2.41° (H x V) |
| Maximum Aperture | f/1.9 to 2.8 |
| Focus Type | Servo |
| Filter Thread | M82 x 0.75 mm |
| Macro | Yes |
| Minimum Object Distance | 2.62' / 0.8 m |
| Optical Image Stabilization | No |
| Dimensions | 35.31 × 29.46 × 27.18 cm |
| Weight | 2.67 kg |
Key Features
- 8-128mm Lens for URSA Broadcast Camera
- B4 Lens Mount, 16x Zoom Ratio
- T1.9 (8mm) to T2.8 (128mm) Max Aperture
- Digital Servo for Focus & Zoom