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CRW File Format Specification

File format .CRW
Developer canon
Type of format Raw image format
Supported Applications Picasa, Adobe Photoshop, Adobe photoshop light room etc.

What do you understand by CRW file format?

CRW is the file format of Canon RAW file format. This file format is based on the CIFF (Camera Image File format). Its structure is very similar TIFF’s in the sense that its directories point to data within the file. It is used in an uncompressed, unmodified image taken at high resolution in certain high-end digital cameras. It’s preferred by professional photographers and people who need the purest, rawest images possible. The camera Raw image file format is specific to your digital camera, with most being proprietary formats of your specific camera. The camera raw feature of photoshop element can understand many of these raw file formats. CRW files are available from higher end digital cameras. CRW (RAW) files are larger than JPG files because they contain a lot more information about your image. The advantage of CRW files is that the image is preserved in an uncompressed format. CRW files give you a great control over the dynamic range of your image. CRW file also contains the Meta Data belonging to the image. Meta Data includes such things as the time and date the image was taken, the camera makes and model, the camera setting and it will also record the GPS location. The CRW file format is also considered the equivalent of a digital negative.

CRW Format

Advantages of CRW file

  • CRW is a proprietary format
  • The main advantage of CRW file is, it allows the photographer to postpone applying these adjustments.

Disadvantages of CRW file

  • CRW files are larger than JPEG files, it consumes large space of memory.
  • It is not a Standard format.

How to Open CRW file?

  • STEP1: Select the CRW file, Right click the CRW.
  • STEP2: Now, choose 'Open with' option & select default program.
  • STEP3: If default program option not available, then choose Adobe photoshop, CorelDRAW, Picasa in the list of the program.
  • STEP4: Click Ok.

Note: If CRW supported software is not available on your PC, so you need to download from the internet and install it.

List of program that opens CRW file

  • Adobe Photoshop
  • Picasa
  • CorelDRAW
  • Adobe Photoshop Lightroom
  • Xaea Photo & Graphic Designer
  • Adobe Photoshop Camera Raw

List of Digital camera’s that produce CRW file

CRW Format

  • Canon Powershot Pro1
  • Canon Powershots G1-G6
  • Canon Powershots S30-S70
  • Canon EOS D30
  • Canon EOS D60
  • Canon EOS 10D
  • Canon EOS 300D

3 Reasons -Unable to open the CRW file

  • Due to accidental deletion of the CRW file from the windows registry.
  • Due to malware attack, CRW file may be corrupted.
  • Incomplete installation of the application that supports a CRW file.


In this article describe the concept of CRW file format. This file format produce by canon cameras. It also takes very large memory space to store the images. Also describe the basic information, advantages and way to open CRW file.