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Nikon Coolpix RAW
The raw format for Nikon's compact cameras.
NRW is a variation of the Nikon Electronic Format (NEF) designed specifically for high-end Coolpix compact cameras (like the P7000 series). While structurally similar to NEF, Nikon treats it as a distinct format to differentiate the consumer/compact line from the DSLR/Mirrorless line (which uses NEF).
NRW files typically contain 12-bit sensor data. They support many of the same features as NEF, including non-destructive editing of white balance and exposure, though they may lack some of the deeper custom metadata found in pro DSLRs.
Introduced to bring raw capabilities to advanced point-and-shoots without diluting the 'pro' NEF brand.
Icon File
A generic, often ambiguous extension for icon resources.
The `.icon` file extension is a generic identifier for icon images. Unlike the strictly defined `.ico` (Windows Icon), `.icon` is often used in Unix/Linux environments or by tools like ImageMagick as a catch-all alias for various icon formats (including Sun Icon, XBM, or simply renamed ICO files). It is not a standardized format itself but a convention for naming icon resources.
The internal structure of an `.icon` file depends entirely on what created it. It might be a standard Microsoft ICO container with multiple sizes and color depths. It might be a persistent X11 bitmap (XPM). Or it might be a Sun Raster file used for icons on Solaris systems. Because of this ambiguity, it requires a robust viewer that detects format by 'magic bytes' rather than extension.
In the early days of GUI desktops (SunOS, IRIX, early X11), there wasn't a single unified icon standard like Windows .ico. The `.icon` extension served as a descriptive label for files intended to be used as desktop icons, regardless of their underlying binary format.
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