Cambo WRA-2138SB Lens — Specs, Reviews, Used Prices

Cambo WRA-2138SB Wide-RS 138mm HR Digaron-Float, Short Barrel

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Lens Overview — Cambo WRA-2138SB

The Cambo WRA-2138SB is a Large Format lens built for Medium Format digital camera systems, featuring a fixed 138mm focal length and a maximum aperture of f/6.5. Designed around a Short Barrel configuration, this lens is paired with the HR Digaron-Float optical assembly and mounts via a Lens Board interface, as used on technical cameras. The manual focus-only design reflects the deliberate, methodical shooting workflow typical of technical and large format photography, where precision and repeatability take priority over speed.

Weighing 1200g, this is a substantial optic that communicates its build quality through mass. The lens carries a Large Format designation while being optimized for Medium Format camera systems, making it well-suited to high-resolution digital backs and technical camera rigs. Image stabilization is not present, consistent with the static, tripod-based shooting environments where this lens category is typically deployed.

With a fixed focal length and no zoom capability, the 138mm prime configuration delivers a singular, consistent perspective. This lens is classified as a Special Effect type within the Cambo Wide-RS system, indicating its specialized role within technical camera workflows.

Key Features — Cambo WRA-2138SB

HR Digaron-Float Optics: The floating element design corrects for field curvature and aberrations at close focus distances, maintaining edge-to-edge sharpness across the image circle.

138mm Fixed Focal Length: A prime configuration that delivers a consistent perspective optimized for architectural, product, and technical photography workflows.

Medium Format Image Circle: The image circle covers Medium Format digital backs while providing ample room for the movements typical of technical camera use.

Short Barrel Configuration: The compact barrel length reduces the overall rig depth compared to standard barrel versions, useful in space-constrained technical camera setups.

Lens Board Mount: Mounts via a standard technical camera lens board interface, ensuring compatibility with Cambo Wide-RS and similar technical camera systems.

f/6.5 Maximum Aperture: A modest maximum aperture consistent with large format optics, well-suited to tripod-based shooting with digital backs that perform well at base ISO.

Lens Specifications — Cambo WRA-2138SB

Cambo WRA-2138SB full specifications
Spec	Detail
Use Cases	Studio
Lens Type	Prime
Format	Large Format
Zoom/Prime	Prime
Focal Length	138mm
Maximum Aperture	f/6.5
Camera System	Medium Format
Lens Mount	Lens Board (Technical Camera)
Autofocus	No
Focus Type	Manual
Image Stabilization	None
Weight	1200g

Description — Cambo WRA-2138SB

The Cambo WRA-2138SB Wide-RS is a 138mm fixed focal length lens built for Medium Format camera systems and carrying a Large Format lens format designation. It mounts via a Lens Board (Technical Camera) interface, making it compatible with technical camera rigs designed for precision, high-resolution imaging. With a maximum aperture of f/6.5 and manual focus operation, this lens is built for deliberate, controlled shooting environments.

The Short Barrel design keeps the overall profile more compact within its class, while the total weight of 1200g reflects a robust construction. Image stabilization is not included, in keeping with the tripod-based workflows common to technical camera photography. There is no filter thread specified for this lens.

As a prime lens with a fixed focal length, the WRA-2138SB delivers a single, consistent perspective suited to architectural, product, and studio applications where the technical camera platform excels.

Pros — Cambo WRA-2138SB

✓Fixed 138mm focal length provides a consistent, dedicated perspective suited to technical camera work
✓Lens Board (Technical Camera) mount ensures compatibility with technical camera systems
✓Optimized for Medium Format camera systems, supporting high-resolution digital back setups
✓Short Barrel design contributes to a more compact form factor within its lens class
✓Manual focus operation gives the photographer full, deliberate control over focus placement

Cons — Cambo WRA-2138SB

✗Maximum aperture of f/6.5 is relatively modest, limiting performance in lower light conditions without supplemental lighting
✗No image stabilization, requiring stable support systems such as a tripod for sharp results
✗Manual focus only with no autofocus capability, which may slow down certain shooting workflows
✗At 1200g, the lens is heavy and demands a robust camera support system
✗No filter thread size specified, which may complicate the use of front-mounted filters

Frequently Asked Questions — Cambo WRA-2138SB

What camera mount does the Cambo WRA-2138SB use?+

This lens uses a Lens Board (Technical Camera) mount, as specified in the mount data. It is designed for use with technical camera systems that accept this interface.

Does this lens support autofocus?+

No, the Cambo WRA-2138SB is a manual focus lens only. There is no autofocus functionality, which is consistent with technical camera shooting disciplines.

What is the maximum aperture of this lens?+

The maximum aperture is f/6.5. This is a fixed prime lens with a focal length of 138mm and no zoom capability.

How much does the Cambo WRA-2138SB weigh?+

The lens weighs 1200g. Given this weight, a sturdy tripod or technical camera support system is strongly recommended.

Is this lens compatible with Medium Format camera systems?+

Yes, the specifications confirm this lens is designed for Medium Format camera systems. It uses a Lens Board (Technical Camera) mount to connect to compatible technical camera bodies.

Does the Cambo WRA-2138SB have image stabilization?+

No, image stabilization is listed as None in the specifications. This lens is intended for use in controlled environments where the camera is mounted on a stable support.

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