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BMP3 to DNG
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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.

DNG (Digital Negative) is an open-source raw image file format developed by Adobe, aimed at providing a universal and more standardized option for storing raw image data from digital cameras. This format enables extensive post-processing flexibility, allowing photographers to adjust exposure, color balance, and other settings while preserving image quality. DNG files also tend to be smaller in size compared to other raw formats, and they are widely supported across various software applications, making them a popular choice for photographers looking for both quality and compatibility.