Zoom Servo Drive for Zeiss Lightweight Zoom LWZ3 21-100 mm

Motorizing your Zeiss LWZ.3 zoom lens with CDM-LWZ3-Z

Single unit mounted onto lens

Three captive screws keeping the single servo drive unit permanently fixed onto lens.

Controlled via SONY FS & LANC handgrip

The Sony FS5 / FS7 handgrip zoom rocker controls directly the servo drive unit. Other zoom rockers with LANC protocol are compatible too, e.g. mounted to handgrip.

Camera control signals forwarded

Control commands are immediately looped through to the camera (e.g. menu / user buttons / focus magnification / camera run & stop).

4 Zoom Modes

EB / Documentary, Live / Hardcut, Silent, and Direct Mode

Learn more in the product PDF

please complete the form to to receive the detailed product PDF

Zeiss Lightweight LWZ.3 Zoom Servo Drive

Best of Show 2018 award by cinema 5D

Category: Camera Accessory

What’s remarkable about the Chrosziel solution is its extremely small size and elegance, the quietness and simplicity of it. It also loops through the LANC information from a handgrip like on the FS7, meaning that you can use the zoom rocker on the handgrip as well as the start/stop or menu buttons. It’s self-calibrating as well. It’s clear that Chrosziel is on a mission to motorize the zoom lenses from all kinds of manufacturers, and we like how they are doing it.

Nino LeitnerEditor in Chief cinema 5D

Timm Stemann explains the features of the Zoom Servo Drive CDM-LWZ3-Z

Interview with Nino Leitner

Editor in Chief cinema 5D

Interview with Robert Löved

Editor at slashCAM

Product introduction of the Zoom Servo Drive

Interview with productionHUB

Timm Stemann gives an 3.15 mins introduction

Interview with productionHUB

Single unit mounted onto lens

The CDM-LWZ3-Z is designed for the Zeiss Lightweight Zoom LWZ 21-100 mm/T2.9-3.9 T zoom lens (ZEISS LWZ.3). With the Zoom Servo Drive Chrosziel addresses camera operators working in the broadcast, documentary, and related sectors offering a reasonably priced device enabling creative processes that may be impossible while pulling zoom manually.

The Zoom Servo Drive adds only indispensable weight to the setup. It contains one digital servo motor, the gear and a PCB with CPU in one single housing. The mounting of the Zoom Servo Drive makes the operator’s workflow comfortable. Just three captive screws are needed to mount it onto the Zeiss Lightweight Zoom (LWZ.3).

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Setup Sony FS5 Zeiss LWZ.3
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Sony handgrip / other LANC handgrips with zoom rockers are working, too

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Zoom Servo Drive CDM-LWZ.3-Z with 4 zoom modes

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ZEISS Lightweight Zoom LWZ.3 21-100 mm/T2.9-3.9 T zoom lens (ZEISS LWZ.3)

1. Sony handgrip / other LANC handgrips with zoom rockers are working, too
2. Zoom Servo Drive CDM-LWZ.3-Z with 4 zoom modes
3. Zeiss Lightweight Zoom LWZ.3 21-100 mm/T2.9-3.9 T zoom lens (ZEISS LWZ.3)
4. Chrosziel Light Weight Support 401-FS5

set up at NAB with Zeiss LWZ.§ lans and Chrosziel zoom servo drive

Controlled via Sony smart grip or any other LANC hand grip

Until today, zoom servo drives were operated either by the inbuilt zoom rocker or external zoom devices. A second handgrip controls the camera settings or user commands. Both units are separated from each other and cannot be operated by one single hand.

With the CDM-LWZ3-Z Chrosziel was able to unify both functionalities into one single unit. Supported are the smart grips of the Sony PXW-FS5 and Sony PXW-FS7 or any LANC compatible zoom rocker.

For operation the power cable is connected and the two Jack cables with the handgrip and the camera. Once powered the zoom servo drive calibrates automatically the end stops of the lens. To further support the operator’s piece of mind Chrosziel implemented the so called “Soft Ramping”. Instead of having the zooming suddenly and unexpectedly stop, the zoom gently slows down the movement of the lens at the end stops.

By using a LANC device the operator may build his or her setup, like shoulder, Steadicam or Gimbal applications. Thus, the CDM-LWZ3-Z makes an all-day companion for the Zeiss  Lightweight Zoom LWZ.3 21-100 mm/T2.9-3.9 T zoom lens (ZEISS LWZ.3) and gives the camera operator the freedom of creativity needed.

All camera control signals are forwarded

Control commands (e.g. menu / user buttons / focus magnification / camera run & stop) are immediately looped through to the camera via the LANC protocol.

By using a Sony PXW-FS5 or a Sony PXW-FS7 camera with a SWIT battery a D-Tap to a (straight or angled) Lemo compatible 5-Pin power cable is used (Chrosziel order numbers: MN-AB-A with angled Lemo compatible socket / MN-AB with straight Lemo compatible socket). The two Jack-Jack cables are forwarding the control commands from the hand grip.

If e.g. a Panasonic Varicam, Sony PMW-F5 or Sony PMW-F55 are used a combined cable with power and start / stop is required, like a Hirose 4-Pin to a (straight or angled) Lemo compatible 5-Pin cable (Chrosziel order numbers: F55-A2-PCAM-A with angled Lemo socket / F55-A2-PCAM with straight Lemo compatible socket). Also, the two Jack-Jack cables are forwarding the control commands from the hand grip.

Also, Chrosziel offers a variety of power cables with straight and angled plugs for all types of camera power out sockets and batteries including camera run / stop functionality (see PDF for download).

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Zoom Servo Drive Zeiss LWZ.3 21-100mm
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LEMO 0B 5-Pin (camera start / stop, power)

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2.5mm Jack (control command In / Out)

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2.5mm Jack (control command In / Out)

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USB type mini A-B (firmware updates)

1. LEMO compatible 0B 5-Pin socket (camera start / stop, power)
2. 2.5mm Jack port (control command In / Out)
3. 2.5mm Jack port (control command In / Out)
4. USB type mini A-B (firmware updates)

workshop at morsmedia in Dortmund

Uli Mors (CEO morsmedia | Fernseh- und Filmproduktion, Sony FS5 / FS7 professional, Fujinon ambassador, well-known camera instructor) in action testing zoom curves

Uli Mors was visited by Chrosziel’s Timm Stemann at his office in Dortmund to host a workshop.  Together with other camera pros they spent nearly a whole day to find out the best solution. Learn more about the workshop in our user story (“Smooth zoom curves are filmmakers best friend”).

Take four: zoom servo drive zoom modes

For freedom of creativity the operator may choose from four different zoom modes: EB / Documentary Mode, Live / Hardcut Mode, Silent, and Direct Mode.

EB / Documentary Mode

Designed for long and smooth zoom drives with the CDM-LWZ3-Z it offers slow creeping zoom transitions while keeping the motive perfectly framed.

Silent Mode

To reduce the sound of the zoom servo drive the maximum speed of its motor is limited to 40 percent making the setup almost inaudible.

Live / Hardcut Mode

To catch the best moments, the Live / Hardcut Mode is useful. It uses 80 percent of the maximum speed capacity of the motor offering fast zoom drives but with Soft Ramping.

Direct Mode

The Direct Mode finally uses the full speed capacity of the Zoom Servo Drive. The LANC commands are implemented instantaneously without ramping and smooth transitions. Useful for B camera operators catching snaps shots from the concert.

Exploded view

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Zeiss Lightweight LWZ.3 Zoom Servo Drive
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Gear cover

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Motor gear

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Digital servo motor

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Mounting screw

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Mounting screw

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Mounting screw

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PCB with CPU

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Cover

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Status LED (on the back of the housing)

1. Gear cover
2. Motor gear
3. Digital servo motor
4. Mounting screw
5. Mounting screw
6. Mounting screw
7. PCB with CPU
8. Cover
9. Status LED

Learn more in the product PDF

please complete the form to to receive the detailed product PDF

detailed product specifications

what’s in the box

detailed accessory overview

pricing points (USD / EUR)

...and much more