This document describes the FUJINON UA13x4.5BERD-S9 TV lens, a bayonet mount type zoom lens developed for 2/3” format color TV cameras (prism type optical system).
Function Description
The UA13x4.5BERD-S9 is a high-performance zoom lens designed for professional broadcast and cinema applications. It offers a 13x zoom ratio, covering focal lengths from 4.5 mm to 59 mm. With an extender (2x), the focal length range extends to 9 mm to 118 mm. The lens features a maximum relative aperture of F1.8 at 4.5 mm to 41 mm, transitioning to F2.6 at 59 mm. With the extender, these values become F3.6 to F5.2. The iris range is F1.8 to F16, with a closed position.
The lens incorporates various control mechanisms for precise operation:
- Iris Operation: Supports both auto iris and manual iris modes. In auto mode, the iris adjusts automatically based on camera signals and object brightness. In manual mode, the iris ring can be rotated directly. An iris momentary switch allows temporary auto iris adjustment even in manual mode. An Iris A-M position change switch (SW1-7) can reverse the default positions of auto and manual modes.
- Focus Operation: Focus is adjusted by rotating the focus ring. Clockwise rotation from the camera side focuses on closer objects, while counterclockwise rotation focuses on distant objects. The lens also supports remote focus control via optional accessories.
- Zoom Operation: Offers five modes of operation: manual, zoom seesaw control lever, quickzoom, auto cruising zoom, and zoom limit.
- Manual Zoom: The zoom servo/manual select knob is set to "M," and the zoom ring is rotated directly or via the zoom lever. Clockwise rotation moves to wide, counterclockwise to tele.
- Zoom Seesaw Control Lever: With the zoom servo/manual select knob set to "S," pressing the lever towards "T" zooms to tele, and towards "W" zooms to wide. The zoom speed varies with the lever's displacement. A zoom maximum speed control knob allows adjusting the maximum zoom speed in seven steps.
- QuickZoom: Quickly zooms to the tele end for precise focusing or checking composition. This function operates at maximum zoom speed, regardless of the zoom maximum speed control knob setting.
- Auto Cruising Zoom: Moves the zoom to the tele or wide end at a constant, preset speed. This is useful for maintaining a slow, consistent zoom speed.
- Zoom Limit: Confines zoom movement within a desired range, allowing zooming within specific shot angles. Limit positions can be set manually and are retained even if the lens power is turned off.
- Macro Operation: Allows close-up shots by rotating the focus ring to infinity, pulling the macro lever, and rotating the macro ring. Focus is then adjusted via zoom.
- Extender Select Lever: Activates the built-in 2x extender by aligning the "×2" mark with the index.
- VTR Switch: Starts or stops the VTR connected to the camera. Its function can be reconfigured via the function & mode select switches.
- Return Switch: Displays return video images in the camera's viewfinder while pressed. Its function can also be reconfigured.
- Expansion Connector: Used for controlling the lens from a personal computer or for virtual studio systems (outputs encoder signals).
- Function & Mode Select Switches (SW1 & SW2): A set of internal DIP switches located under a rubber cap on the front of the drive unit. These switches allow reconfiguring the functions of the quickzoom, VTR, return, iris compensation, iris A-M position, and zoom limit switches.
- QuickZoom ON/OFF (SW1-1): Enables/disables quickzoom and auto cruising zoom.
- VTR → QuickZoom Select (SW1-2): Changes VTR switch function to quickzoom.
- Return → QuickZoom Select (SW1-3): Changes return switch function to quickzoom.
- Auxiliary Switch (SW1-4): A spare switch.
- Auto Cruising Zoom ON/OFF (SW1-5): Enables/disables auto cruising zoom.
- Iris Comp ON/OFF (SW1-6): Enables/disables iris compensation, useful when using the extender in remote iris mode to prevent image darkening.
- Iris A-M Position Change (SW1-7): Swaps the positions of auto and manual modes on the iris mode select knob.
- Zoom Limit ON/OFF (SW1-8): Enables/disables the zoom limit function.
- Camera Communication ON/OFF (SW2-1): Enables/disables serial communication with the camera.
- Analog Zoom Demand Zoom Mode Function ON/OFF (SW2-2, SW2-3): Configures zoom mode characteristics (zoom speed vs. control signal) for analog zoom demand units.
- Robotic, P/T Mode Select (SW2-4): Enables serial communication control for robotic systems or pan-tilt heads.
- Zoom Mode Select (SW2-5): Selects one of ten zoom speed characteristics for the zoom seesaw control lever.
Important Technical Specifications
- Application: 2/3” Format Color Camera (Prism Optical System)
- Focal Length: 4.5 ~ 59 mm [9 ~ 118 mm] (with 2x extender)
- Zoom Ratio: 13x
- Maximum Relative Aperture: F1.8 (4.5 ~ 41 mm) ~ F2.6 (59 mm) [F3.6 ~ F5.2] (with 2x extender)
- Iris Range: F1.8 ~ F16, Closed
- Image Format: 9.59 x 5.39 mm (φ11.0 mm), Aspect Ratio 16:9
- Flange Focal Length (in Air): 48 mm (Adjustable Range: ±0.2 mm)
- Minimum Object Distance (from Front of Lens): 0.3 m (0.04 m in Macro Operation)
- Angular Field of View (Wide ~ Tele):
- Horizontal: 93°38′ ~ 9°18′ [56°06′ ~ 4°39′]
- Vertical: 61°50′ ~ 5°14′ [33°20′ ~ 2°37′]
- Diagonal: 101°25′ ~ 10°39′ [62°52′ ~ 5°20′]
- Object Area at M.O.D. (Wide End ~ Tele End):
- Wide End: 744 mm x 418 mm [367 mm x 206 mm]
- Tele End: 54 mm x 30 mm [28 mm x 16 mm]
- Clear Aperture of Lens: Front 86.3 mm, Rear 26.1 mm
- Filter Screw: M127 × 0.75 (Attached to the Lens Hood)
- Iris Control: Servo or Manual
- Zoom Control: Servo (Operation Time: 0.7 ~ 70 s) or Manual
- Focus Control: Manual (Including Motor for Servo Control)
- Mount: Bayonet Mount
- Current Consumption (at 12V DC): 150 mA (Quiescent, Approx.), 850 mA (Maximum)
- Mass (without Lens Hood): Approx. 2.28 kg
Usage Features
- Installation: Before installing the lens, ensure the camera power is OFF. Remove the rear lens cap, rotate the camera's mount clamp ring counterclockwise, align the lens pin with the camera slot, fit the lens to the camera mount, rotate the clamp ring clockwise, and connect the lens cable.
- Flange Focal Length Adjustment: This critical adjustment must be performed when installing the lens for the first time or on a different camera. It ensures the image plane of the lens matches the camera's imaging plane, preventing focus shift during zooming. This involves using a Siemens star chart at approximately 3m, setting the iris to open, zooming to wide, focusing, zooming to tele, refocusing, and repeating until focus is maintained across the zoom range. An F.f adjustment gear is available for adjustment without power supply.
- Iris Sensitivity Adjustment: An internal trimmer allows adjustment of iris sensitivity. Clockwise rotation increases sensitivity, counterclockwise decreases it. Care must be taken to avoid "hunting" (rapid, unstable iris adjustments) when increasing sensitivity.
- Lens Hood: The lens hood can be easily attached and detached by rotating a knob and aligning index marks.
- Optional Accessories: The lens is compatible with optional accessories for enhanced control:
- Focus Position Demand Unit (EPD-4A-E12A): For focus control.
- Zoom Rate Demand Unit (ERD-10A-D01M): For zoom and preset operations.
- Connection Cable (EBF-1): Connects the lens to EPD units.
- Mounting Clamp (MCA-06BC): Used to attach ERD/EPD units to a pan bar.
- Extension Cable (SA-206D-005): For controlling iris, focus, and zoom from a personal computer.
Maintenance Features
- Cleaning: Use commercially available lens cleaner and cleaning paper. First, remove dust with a soft brush or blower. Then, fold cleaning paper, dip it in cleaner, and gently wipe the lens from the center outwards in a spiral motion. Repeat with new paper until clean.
- Moisture Removal: If the lens body gets wet, immediately wipe external moisture with a dry cloth. For internal moisture, place the lens in a vinyl bag with desiccant to thoroughly dehumidify.
- Storage: For long-term storage, keep the lens in a place free from high temperature, high humidity, and corrosive gases.
- Inspection: The lens consists of an optical unit and a drive unit. Do not remove the screws fastening these units, as this can impair functionality or cause electric shock. For optimal performance, a periodic inspection (at least once a year) is recommended. Any products modified by the user may not be eligible for inspection or repair.
Safety Precautions
- General Safety: Read the operation manual carefully. Do not apply strong impacts to the lens. Be careful when installing or removing lenses with protruding rear elements.
- Environmental Considerations: Avoid sudden temperature and humidity changes to prevent lens fogging. Allow the lens to acclimatize to the ambient temperature. When using in fog, rain, or snow, cover the lens to protect it from water.
- Power Supply: Ensure the camera can supply sufficient power to the lens system. Connect all parts correctly before supplying power. If water enters the lens, immediately cut off power.
- Handling: Securely attach all parts to prevent accidents from dropping. Do not look at strong light sources (like the sun) through the lens. Hold cables by the joint part when connecting/disconnecting.
- Malfunctions: If unusual smoke, noise, smell, or foreign objects are detected, immediately cut off power, detach the lens from the camera, and contact the sales agent.
- Modification: Do not modify the lens, as this may impair its functions or cause electric shock.
- Transportation: To minimize impact during transport, set the zoom to the wide end and focus to infinity before detaching the lens from the camera.
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