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X3F to JPS
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X3F is a raw image file format used by Sigma cameras, specifically those with Foveon X3 sensors. The format captures all the data from the sensor without any in-camera processing, allowing photographers to have maximum control over post-processing. The Foveon sensor is unique in that it captures full color information for each pixel by layering photodiodes, distinguishing it from other camera sensors.

JPS is one of the most widely used image file formats, favored for its efficient lossy compression algorithm that significantly reduces file size while maintaining a high image quality. It is commonly used for photographs and web graphics; however, the lossy nature of its compression means that some image quality is sacrificed, and this loss can be exacerbated with repeated editing and saving. JPG files support 24-bit color, allowing for a broad spectrum of colors, but they do not support transparent backgrounds.