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A RAW file is a digital file that contains the unprocessed and uncompressed data captured directly from a camera's image sensor, much like a digital negative. It preserves all the original data, offering maximum flexibility for editing in post-production, but it requires specific software to view and convert into other formats like JPEG.

What a RAW file is

Unprocessed: The data from the camera sensor is saved without any automatic processing for things like white balance, sharpening, or color saturation.

Uncompressed (often): Unlike JPEGs, which use lossy compression that discards some data, RAW files may use lossless compression or no compression at all, retaining every bit of image information.

Large file size: Because it contains all the data, a RAW file is significantly larger than a compressed JPEG file.