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HDR (Radiance RGBE image format) is an image file format designed to store images with a broad range of luminance levels, from deep shadows to bright highlights, capturing more detail in both areas than standard digital imaging formats. This format is commonly used in photography and computer graphics to achieve more realistic or artistically enhanced representations of light in images. However, HDR files can be larger in size, and they require compatible software and displays to fully appreciate the enhanced dynamic range.

BMP3 (Bitmap Image File V3) is an image file format developed by Microsoft, commonly used for storing two-dimensional digital images in a wide range of color depths. While BMP files are capable of storing detailed images without any compression—preserving the original quality—they often result in large file sizes, making them less ideal for web usage or sharing.