Canon PowerShot G6 User Manual download pdf (Page 66)

Changing the File Format

The camera can be set to record images in the RAW format before

shooting.

This camera records images in either JPEG format or RAW format.

z JPEG format

When pictures are taken in JPEG format, the images are processed

inside the camera for optimum image quality, and also compressed to

allow a larger number of images to be stored on the CF Card. However,

the compression process is irreversible, meaning that the original

image data cannot be recovered once it has been compressed.

z RAW format

When pictures are taken in RAW format, no processing is carried out

inside the camera, and the raw data from the CCD is recorded as is.

As with JPEG format, the RAW images are compressed at the time

of recording. However, with the RAW format, the compression

process is completely reversible, meaning you can obtain high

quality pictures without any image degradation, similar to those

recorded with non-compression file formats such as RGB-TIFF. The

file size of RAW image is also very compact, at around one quarter*

of the size of RGB-TIFF images.

Standard uncompressed files formats, such as RGB-TIFF, are

processed by the camera, meaning that if you make further

adjustments with image editing software, image quality may be

affected. Images in RAW format cannot be opened using photo-

editing software and must be first converted (processed) into a

standard file type such as TIFF or JPEG. If you use the bundled

software ZoomBrowser EX (Windows)/ImageBrowser (Macintosh),

you can process RAW images into a standard file type after

adjusting the quality of the original image data. This ensures that

you can create the image of your choice while preserving high image

quality. For further details, please refer to the Canon Digital Camera

Software Starter Guide Disk. The resolution (3072 x 2304) and

compression settings cannot be adjusted for RAW images. When a

RAW image is recorded, a JPEG thumbnail will be created at the

same time.

*As measured by Canon’s testing standard.

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Canon PowerShot G6 User Manual Page 66