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3FR to PPM
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3FR is a raw image file format used by Hasselblad digital cameras, capturing all the data as sensed by the camera's sensor without processing or compression. This format allows for extensive post-processing capabilities, offering photographers greater control over image adjustments such as exposure, color balance, and detail, but results in larger file sizes compared to standard compressed image formats.

PPM stands for Portable Pixmap, and it is a simple image format that is part of the Netpbm package. The PPM format stores color images in a plain text or binary format, representing pixel values with three numbers for red, green, and blue color channels. PPM files are easy to read and understand, but they can be large in size as they do not employ any form of compression, resulting in each pixel being represented by full color intensity values.