Canon POWERSHOT PRO 1 User's Guide download pdf (Page 64)

Changing the File Format

The recording file format can be switched to the RAW format before

shooting the image.

With the standard JPEG file format, the camera processes images

after capturing them to produce optimal results. The JPEG format

compresses images so that more can be stored on a single CF card.

However, the compression is irreversible, meaning that the original

image data cannot be recovered after processing.

In contrast, the RAW format records the image data as captured by

the camera’s CCD without further processing. RAW images are

compressed, but the compression is reversible* so that a high-

quality image can be obtained from the decompressed file without

any loss of image quality. In addition, although a RAW file is larger

than an equivalent JPEG file, it is still only approximately one-

quarter the size* of an uncompressed RGB TIFF format file, making

it relatively compact.

With standard uncompressed file formats, such as RGB TIFF,

images are processed in the camera and require further processing

by retouching software to adjust the image parameters, which

reduces image quality. With the RAW format, however, the original

data can be used in special software** to adjust the image

parameters (white balance, contrast, sharpness and saturation)

making it possible to maintain the image quality while making

changes. The resolution (3264 x 2448) and compression settings

cannot be adjusted for these images.

* As measured by Canon’s testing standard.

** The bundled software can be used to open or adjust the parameters of

images recorded in the RAW file format. Please consult the Software

Starter Guide for details.

Mode Dial

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 206 207

No comments

Canon POWERSHOT PRO 1 User's Guide Page 64