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JNG (JPEG Network Graphics) is an image file format similar to PNG, but it uses JPEG compression for bitmaps and offers support for color and grayscale images with or without transparency. This format was designed to provide a simpler, more efficient method for transmitting images over the internet, and it allows for lossy compression to reduce file size without a significant loss in quality for certain types of images. However, JNG is not as widely supported as other more common image formats like JPEG and PNG.

The RAW image file format is a generic term for a variety of image formats used by different digital camera manufacturers. RAW files store unprocessed data from the camera's sensor, providing photographers with the ability to manipulate settings like exposure, white balance, and sharpness during post-processing, which can result in higher image quality. Unlike JPEG and other compressed formats, RAW files retain a much broader range of color and luminance values, offering more flexibility for editing but also resulting in larger file sizes.