Global vs Rolling Shutter Camera Modules for Moving Scenes

Choose a camera shutter by checking how the sensor exposes the scene, how far the subject moves during exposure, and how the camera is synchronized with other equipment. Record the required image mode and lighting alongside the shutter type before requesting a module configuration.

This guide provides a motion-evaluation plan for embedded vision projects. Confirm the shutter, timing controls, and supported modes for the exact module and host software you intend to use.

Understand the exposure sequence

A global shutter starts and ends exposure across the sensor at the same time. A rolling shutter exposes successive rows at different times. Scene motion during that row sequence can change the geometry of a captured object. Basler documents these exposure sequences and their timing diagrams. Electronic shutter types

Begin your requirement sheet with the motion that matters to the application. Record whether the camera moves, whether the subject translates or rotates, and which features the application must measure or recognize. A conveyor inspection, a stationary document capture, and a moving robot each need their own evaluation scene.

Calculate an initial exposure budget

Exposure time describes how long light is collected during image acquisition. Check the available exposure range and the effective setting for the selected camera mode. Basler lists model-specific limits and explains that effective exposure can vary with the sensor and configuration. Exposure time documentation

You can make an initial blur estimate from image-space speed. For a hypothetical object moving across the image at 2,000 pixels per second, a 1 millisecond exposure produces approximately 2 pixels of travel during exposure. Allowing 0.5 pixel of travel gives an initial exposure target of 0.25 milliseconds.

The calculation is image speed multiplied by exposure duration. It assumes approximately constant image-space motion during the exposure. Treat it as a planning estimate and test the result using the intended lens, distance, lighting, and image-processing settings.

Record the application's acceptable blur and the conditions used to judge it. Keep both the requested exposure setting and an example frame with the evaluation results.

Obtain row timing for a rolling-shutter candidate

Ask for the row-to-row exposure offset or the applicable sensor timing diagram. If an illustrative mode has 1,000 active rows with a 10 microsecond offset between successive row starts, the first-to-last active-row start difference is approximately 9.99 milliseconds. During that interval, different parts of a moving scene are sampled at different times.

This arithmetic describes the stated hypothetical row timing. The complete frame schedule also requires the sensor's documented timing for that mode. Capture the actual region of interest, frame rate, and timing configuration with the test evidence.

For a rolling-shutter proposal, ask the integration team to demonstrate the fastest expected movement and the most demanding camera orientation. Save representative frames that show the features used by your application.

Confirm mode selection and control support

Some cameras provide selectable shutter modes. Basler's shutter-mode documentation explicitly makes availability model-dependent. Request the exact supported setting and the software interface that configures it for your proposed module. Sensor shutter mode

Ask who supplies the driver and how the selected setting is verified after startup. Include the configuration in the test report so a later software update can be checked against the same operating mode.

For a two-camera project, document the timing relationship between the sensors as an additional requirement. Our stereo synchronization and calibration guide explains the evidence to request for paired capture and subsequent depth processing.

Run a repeatable motion test

Use a test sequence that reflects the project. Agree on the pass criteria before comparing candidate captures.

Run the same sequence at the application's minimum and maximum expected speeds. Include a stationary capture to establish the reference appearance. Where synchronization or strobed lighting is required, request the applicable electrical and timing documentation and test that complete configuration.

Verify that the host sustains the chosen image mode as well. Use the MIPI bandwidth guide to prepare the link budget and the integration checklist for the remaining hardware and software checks.

Send a motion-focused product inquiry

When reviewing our dual-lens camera module, send the intended host, image mode, motion scenario, exposure target, lighting conditions, and quantity. Ask us to confirm the shutter and timing capabilities against the exact configuration.

Attach a short description of the feature your application needs to capture and any existing example frames. Discuss your project with the evaluation criteria so the proposed hardware and supporting information can be reviewed before ordering.