Pixelshift

Pixelshift, also known as sensor-shift stabilization or pixel shifting, is a technology found in some digital cameras that aims to increase image resolution and detail. Instead of taking a single shot, the camera rapidly shifts the image sensor by a fraction of a pixel between multiple exposures. These individual images are then combined by the camera's image processor or specialized software to create a single, higher-resolution image.

The primary benefit of pixelshift is the ability to capture more color information for each pixel. In a standard Bayer filter arrangement, each pixel captures only one color (red, green, or blue). By shifting the sensor, each pixel location in the final image can theoretically record all three colors, leading to a more accurate color rendition and reduced aliasing or moiré artifacts. This results in images with finer detail and sharper edges.

Pixelshift technology is particularly advantageous for static subjects, such as landscapes, studio portraits, or product photography, where camera shake is not a concern. However, because it requires multiple exposures, it is generally unsuitable for capturing fast-moving subjects or in low-light conditions where longer exposures might be necessary. Most cameras implementing pixelshift include a mode to disable the feature or automatically revert to standard shooting when motion is detected. The output files from pixelshift can be larger than standard RAW files due to the increased data captured.