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3FR to SIXEL
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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.

SIXEL is a bitmap graphics format that uses six pixels per character cell to represent images, primarily developed for DEC (Digital Equipment Corporation) terminals in the 1980s. It allows for the display of images directly in terminal emulators that support the SIXEL standard, making it possible to visualize graphics in command-line environments without relying on external graphics programs.