Blackmagic URSA Mini Pro B4 Mount

Description

The Blackmagic URSA Mini Pro B4 Mount converts the URSA Mini Pro into a compact broadcast-style camera platform capable of using professional B4-mount HD broadcast lenses.

Designed specifically for the URSA Mini Pro, the mount incorporates precision optics and spherical aberration correction to compensate for the optical characteristics of B4 broadcast lenses when used with the camera’s Super 35 sensor. It provides a practical way to combine the cinematic image capabilities of the URSA Mini Pro with the flexibility and servo control of professional broadcast zoom lenses.

The mount also connects to the camera’s standard 12-pin Hirose broadcast lens control connection, allowing compatible B4 lenses to provide electronic iris, motorized zoom, and other lens-control functions.

Key Features

• Genuine Blackmagic Design URSA Mini Pro B4 Mount
• B4 bayonet-style lens mount with locking ring
• Designed specifically for URSA Mini Pro cameras
• Compatible with professional B4 HD broadcast lenses
• Precision optical correction
• Built-in B4 spherical aberration correction
• 1.1× optical magnification
• 12-pin Hirose broadcast lens control connection
• Supports compatible motorized zoom lenses
• Supports electronic iris control with compatible lenses
• Allows remote lens control from the camera
• Includes shim set for precise flange-focal-distance adjustment

Broadcast Lens Compatibility

The B4 mount opens the URSA Mini Pro to a large selection of professional broadcast lenses.

Compatible lens types can include:

• Fujinon B4 broadcast zoom lenses
• Canon B4 broadcast zoom lenses
• ENG/EFP servo zoom lenses
• Studio broadcast lenses
• HD B4 lenses
• Long-range sports and event zoom lenses

This makes the mount particularly useful when you already have access to professional B4 lenses rather than a collection of EF or PL cinema lenses.

For example, lenses such as the Fujinon XA17x7.6BRM, Fujinon HS18x5.5BERD-S, and other compatible B4 broadcast lenses can turn the URSA Mini Pro into a much more traditional ENG/EFP-style camera configuration.

12-Pin Lens Control

The URSA Mini Pro includes a standard 12-pin Hirose lens control connection when configured with the appropriate B4 mount.

With compatible broadcast lenses, the camera can remotely control functions such as:

• Motorized zoom
• Electronic iris
• Record start/stop
• Lens communication
• Other compatible broadcast lens functions

This makes the system especially useful for live events, sports, interviews, documentary production, corporate video, and multicamera broadcast work.

Optical Design

Using a conventional B4 lens directly on a Super 35 camera can produce optical problems because many B4 lenses were designed around the smaller imaging geometry of multi-sensor broadcast cameras.

The URSA Mini Pro B4 Mount addresses this with dedicated optical elements designed for the URSA Mini Pro.