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Fujinon XA20SX8.5BRM-K3 B4 HD Lens for 2/3 Sensors
becomes available?

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Fujinon XA20SX8.5BRM-K3 B4 HD Lens for 2/3 Sensors

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4 Day Rental Price:



*up to 2nd day air - overnight available

The Fujinon XA20SX8.5BRM-K3 is an 8.5-170mm ENG lens that gives B4-mount, 2/3"-format cameras a wide to super-telephoto angle of view with servo control. Key features include:

  • 8.5-170mm lens for 2/3" format

  • Quick zoom and auto cruising

  • Fast f/1.8 maximum aperture at 8.5 to 113mm

  • No extender

Wide to Super-Telephoto Zoom. The Fujinon XA20SX8.5BRM-K3 is a wide to super-telephoto lens for B4-mount, 2/3"-format cameras, such as the Blackmagic Design Ursa Broadcast (B4)z, Blackmagic URSA Broadcast G2 Camera (B4), and Sony PXW-Z750 4K. It has a 20x zoom ratio and a fast maximum aperture of f/1.8 from 8.5 to 113mm, though it’s a slower f/2.7 at 170mm. This lens includes an ergonomic digital servo zoom control.

Internal Focusing Design. This manual-focus lens has an internal-focusing design, which ensures a more consistent focal length when adjusting focus by minimizing the effects of lens breathing.

Fast Zoom Speed. Fujinon’s QuickZoom technology gives you a 0.7-second end-to-end zoom speed. With the push of a button, QuickZoom facilitates a quick shift to the telephoto end to check focus. The lens automatically returns to your selected focal length as soon as you release the button.

Looking for a Lens-Control Solution? We offer the Fujinon MS-01 Rear Zoom and Focus Lens Control Kit as a separate rental item. This kit is designed to only work with ENG/EFP lenses—specifically Fujinon’s XA line of lenses

Q & A

  • How is this lens powered and controlled?
    • This lens has an attached control cable that will plug into compatible cameras for servo power and lens control.

  • Does this lens have an extender?
  • Brand



    85 × 180.8mm / 3.3 × 7.1″

    Filter Thread

    M82 x 0.75

    Image Stabilization


    Item Type


    Max Aperture

    1 : 1.8 (8.5-113mm) / 1 : 2.7 (170mm)




    1.5 kg / 3.3 lbs.

    Fujinon XA20SX8.5BRM-K3 B4 HD Lens for 2/3 Sensors

    Case Insert - H19A-F4 Fujinon B4 Lens

    Filter - Protective B+W XS-Pro Clear 82mm

    Hood - Fujinon 4K B4

    Hood - Fujinon MK/ENG Hood Cap

    Video Support - Fujinon XA20SX8.5BRM-K3 B4 Servo Unit