Why Do Dark Horizontal Bands Appear in My Still Product Photos Under LED Lights?

Understand the timing mismatch

Many electronic shutters read image rows at different moments. Some LED fixtures vary in brightness over time, particularly when dimmed. If the light changes during sensor readout, different rows can receive different illumination and appear as horizontal bands.

The appearance depends on the camera, shutter method, exposure duration and actual light modulation. Two fixtures marketed with the same color temperature can behave differently. There is no universal shutter setting that fixes every combination.

First inspect the unedited still file. If the bands already exist, the capture stage deserves investigation. If they appear only after editing or export, compare that processing stage before changing camera settings. A band fixed on the physical product surface is also a different problem.

Compare shutter and light conditions one at a time

Photograph a stationary matte product against a plain background. Record the camera model, shutter mode, exposure duration, ISO, aperture, light source and any dimmer setting that is known. Retain each original file.

1. Capture a baseline under the current LED setup.
2. If the camera supports another suitable shutter mode, consult its manual and make a comparison without changing the product or lighting.
3. Where supported, test an exposure or anti-flicker adjustment recommended for the actual camera.
4. Separately compare a verified alternative lighting condition.

Do not change shutter mode, dimmer level and exposure duration simultaneously. Such a trial may produce a cleaner photograph without revealing which factor mattered. Automatic exposure or ISO changes should be recorded rather than overlooked.

Mechanical shutter operation and anti-flicker functions vary across devices. A mode that helps one setup may be unavailable or unsuitable in another.

Shutter type is not a universal cure. Mechanical and electronic capture can both be affected by artificial-light modulation under particular conditions. Read the exact model’s instructions: ordinary anti-flicker shooting can time a capture to a supported light cycle, while a high-frequency or variable-shutter control, where offered, addresses a different timing adjustment. An ordinary anti-flicker option should not be assumed to detect every LED modulation frequency.

Sony’s guidance distinguishes these functions and their supported shutter modes. Its listed exceptions and menu routes belong to the named camera models. For an unlisted camera, use its own documentation and record the available control rather than copying a setting name or a recommended shutter speed from another model.

Illustrative case: a shutter change helps but does not finish the diagnosis

Distinguish a clean capture from a cosmetic repair

If changing the shutter method removes the bands in a controlled comparison, record the supported configuration and repeat it on a small batch before using it for the catalog. If changing the light condition changes the bands, investigate the illumination setup. If bands remain across trials, consult the device-specific guidance and isolate other causes.

Do not automatically paint out bands crossing a label or material surface. A local brightness correction may conceal the symptom without establishing the original surface appearance. A suitable new capture is preferable when the image must show accurate color or finish.

The existing CartVisual guide on LED banding concerns moving source video and the distinction between capture artifacts and generation artifacts. This article concerns individual still photographs and shutter-readout behavior. CartVisual does not operate the camera or certify that a source is flicker-free.

Record your own observations

The filled rows are illustrative examples. Use the blank row for your own files and observations.

Download the editable CSV worksheet

What the references establish

• Sony: banding under artificial light: Flickering artificial sources and shutter readout can create bands in captured stills.
• Sony: reducing camera flickering and artificial-light banding: Distinguishes ordinary anti-flicker timing, high-frequency/variable-shutter adjustments and model-specific shutter restrictions. These controls and exceptions must not be generalized to every camera.