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RAW Image Format Guide at OneCall

What is RAW Image Format?

Got the whole image with RAW RAW Image Format is simply the raw data as it comes directly off the CCD with no in-camera processing. Typically this data is 8, 10 or 12 bits per pixel. The advantage of this is that the image has not been processed or white balanced. Which means you can correct the image using photo-editing software such as Photoshop, and the image is a better representation of the "digital negative" captured. The disadvantage is you can't open these image files with a normal photo package without using an "acquire module" (a plug-in, typically TWAIN, which can open / process such images).

Advantages of RAW format

  • A true lossless "digital negative", untouched by a camera`s processing algorithms
  • No sharpening applied
  • No gamma or level correction applied
  • No white balance applied
  • No color correction applied
  • Records data over a wider bit range (typically 10 or 12 bits) than JPEG or 8-bit TIFF


  • Disadvantages of RAW format

  • Requires proprietary acquire module (typically TWAIN) or plug-in to open images Images can take 20-40 seconds to process on an average personal computer
  • No universally accepted RAW standard format, each manufacturer (even each camera) differs
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