How to evaluate 3D camera manufacturers for industrial automation projects

Shortlisting depth camera suppliers for a factory or warehouse program is less about finding the sharpest point cloud and more about finding a partner that will still ship the same camera, with the same calibration, five years from now. A typical shortlist mixes broad-line makers such as Orbbec, which builds stereo, structured light, and time-of-flight cameras, with stereo-focused suppliers such as RealSense, Stereolabs, and Luxonis. Each brings different strengths. This guide sets out the criteria that separate them, so an automation engineer or procurement lead can score suppliers on the same terms.

Start from the application, not the catalog

Before comparing suppliers, write down what the cell or vehicle actually needs. That means the working distance, the required depth accuracy at that distance, the lighting, the surfaces in view, and how fast the camera or the target moves. Add the host platform, the cable run, and the enclosure rating. Note the expected volume and service life too, since a program that deploys hundreds of units over several years needs different supplier commitments than a single pilot cell. A supplier that looks strong on paper can still be the wrong fit if its interface or form factor does not match the machine. With those requirements in hand, the criteria below become a scorecard rather than a feature tour.

Criteria that separate depth camera suppliers

Product range across depth technologies

No single depth technology covers every industrial task. Stereo handles mixed lighting and longer ranges. Structured light gives dense, precise depth at close range indoors. Time-of-flight delivers dense depth with little dependence on scene texture. A supplier with products across all three lets a program standardize on one SDK, one support relationship, and one purchasing agreement while still matching technology to task.

Orbbec’s catalog spans Gemini stereo cameras, Astra structured light cameras, Femto time-of-flight cameras, and Pulsar LiDAR. RealSense’s current lineup centers on stereo depth cameras, including the D400 family, the D555, and an industrial GMSL line. Stereolabs focuses on stereo through its ZED cameras. Luxonis pairs stereo depth with on-camera neural inference in its OAK cameras. A narrower range is not a weakness if your program needs only stereo, but it limits options if requirements shift.

Industrial interfaces

USB is convenient for development and short cable runs but fragile on moving machinery and long distances. Industrial programs usually need one of two alternatives. Gigabit Ethernet with PoE supports long runs and network topologies. GMSL2 suits embedded compute platforms on vehicles and robots, with locking FAKRA connectors that hold up to vibration.

Check which interfaces each supplier offers across the products you are considering. Orbbec offers USB 3.0 on the Gemini 335, GMSL2 with a FAKRA connector on the Gemini 335Lg and Gemini 345Lg, and Gigabit Ethernet with PoE on the Gemini 435Le. RealSense lists a PoE stereo camera in the D555 and a GMSL-based industrial line. Stereolabs offers USB on the ZED 2i and GMSL2 on the ZED X family. Luxonis sells PoE versions of several OAK cameras. Confirm that the interface you need is available on the specific camera that meets your range and accuracy requirements, not just somewhere in the catalog.

SDK and ROS 2 support

The SDK decides how long integration takes and how painful updates are. Ask whether the SDK is open source, how often it is released, and which operating systems and languages it supports. Ask whether ROS 2 support comes from the supplier or a community fork. Check the issue tracker for recent activity.

Orbbec’s open-source SDK v2 covers Windows, Ubuntu, macOS, and Android, with ROS and ROS 2 wrappers and Python support. It also includes a K4A wrapper for teams migrating Azure Kinect code. The RealSense SDK 2.0 is open source and cross-platform. Stereolabs maintains the ZED SDK, and Luxonis maintains DepthAI, both with ROS 2 integrations. Where depth is computed also matters. Cameras that process depth on board, such as Orbbec’s Gemini 330 series on its MX6800 ASIC, reduce load on the host. Systems that compute depth on a host GPU need that compute budgeted into the design.

Calibration and test practices

Calibration drives field accuracy more than any single component. Ask each supplier how every unit is calibrated, what pass criteria it must meet, and whether calibration data can be read from the device. Ask for accuracy figures with their test conditions attached, meaning distance, target reflectivity, and region of interest. Orbbec, for example, specifies the Gemini 335L at ≤0.8% depth accuracy at 2 m and ≤1.6% at 4 m. Figures like these are only comparable across suppliers when the test method matches. Request the method, not just the number. Ask also whether depth-to-color alignment happens inside the camera or on the host. In-camera alignment keeps the registration fixed to the factory calibration and removes one more processing step from the host.

Ask how calibration holds over temperature and vibration and whether the supplier offers recalibration tools or services. A supplier that designs its own depth processor and runs its own calibration lines can usually answer these questions in more depth than one that integrates purchased modules.

Robust design

Factory floors and warehouses bring dust, washdown, temperature swings, and vibration. Compare ingress ratings and operating temperature ranges on the exact models you are considering. Among the cameras above, Orbbec lists the Gemini 335L at IP65 and the Gemini 345Lg at IP67 with an operating range of -20°C to 65°C. Stereolabs lists the ZED 2i at IP66 and the ZED X at IP67. Ask whether vibration and shock testing has been performed and request the test profile.

Production volume capability

A pilot of ten cameras and a rollout of thousands are different purchases. Ask where cameras are manufactured, whether the supplier owns its production lines, and what lead times look like at your forecast volume. Ask how the supplier handles component shortages. Vertical integration helps here. Orbbec designs its own depth ASICs and is building a dual manufacturing base in China and Vietnam, with Phase I of its Shunde facility in production and an overseas base that broke ground in May 2026. Ask every supplier for comparable detail. If the program may later need a custom module, ask whether the supplier offers contract manufacturing. Orbbec offers CM and JDM services alongside its catalog cameras, which gives a path from standard parts to a customized design without changing suppliers.

Product line longevity

Industrial equipment runs for years, and spare cameras must match the originals. Ask how long each product line is supported, how much notice the supplier gives before the end of life, and whether last-time buys are offered. Check whether the supplier publishes product change notifications. Orbbec maintains a public product change notification page. Corporate changes matter too. RealSense now operates as RealSense, Inc., selling certain products under license from Intel. Changes like this are not a reason to exclude a supplier, but they belong in the risk discussion.

Running the evaluation

Turn the criteria into a weighted scorecard that reflects your program. A warehouse fleet might weight interfaces and longevity most heavily. An inspection cell might weigh calibration and accuracy. Send every supplier the same written questions and score the written answers rather than the sales presentation. Score support as well. Ask whether you will have a named application engineer, how quickly technical questions are answered, and whether firmware fixes are delivered on a published schedule.

Then test. Order samples from the two or three top-scoring suppliers and run them in the real environment, at the real working distance, against the hardest surfaces in the process. Log accuracy, dropouts, and integration effort. A short trial on your own line will settle questions that no datasheet can.

Choosing a supplier you can live with

The right depth camera supplier is the one whose product range, interfaces, software, and supply commitments fit your program for its full life. Weigh each criterion against your own requirements, verify the claims in testing, and get longevity commitments in writing before the first production order.