Color recording method that captures RGB channels sequentially across frames rather than simultaneously. Maximizes color resolution per channel but requires precise sync and specialized hardware.
Instead of recording superimposed color information, you play back three consecutive frames — each exposed for only one color channel (red, green, blue). The field-sequential method was a response to the classic Bayer pattern dilemma: if each pixel captures only one color, you lose spatial resolution. Here, you theoretically gain full resolution per color, but pay a high price in complexity and hardware requirements.
On set, you need three things: first, a camera that can switch between color filters or chip modes fast enough; second, stabilized recording — any frame offset dooms you to ghosting artifacts; third, editing software that synthesizes the three frames back into an RGB image. Synchronization between sensor exposure and filter rotation is critical. A millisecond offset and your green channels will land on red objects. This isn't a problem with a static camera and stationary subjects — product photography, documentary shots with a tripod. But handheld? Camera movement? Fast cuts? You'll go mad.
Historically, the method was relevant in early digital cameras — some 3-chip systems used it to simulate higher resolution. In modern practice, it has become almost irrelevant. Why? Because sensor technology (stacked chips, better demosaicing, higher pixel counts) solves the problem more elegantly. You no longer have to deal with frame sequencing. But in very specialized areas — high-resolution technical documentation, scientific imaging — you still see it.
If you have to deal with it: plan rigidly. Tripod setup, synchronized devices, your color correction must happen during rendering, not afterward. The quality per color channel is actually higher than with Bayer — that's the only real advantage. But the logistical burden rarely outweighs it. In 99 percent of cases, you'll use a modern camera sensor, not pay for this burden, and save yourself weeks of workflow optimization.