Canon S90 用户手册

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A RAW image is raw data recorded with nearly no deterioration in image quality 
resulting from image processing inside the camera. You can use the supplied 
software to broadly adjust the image with minimal loss in image quality.

●

Follow Steps 1 – 2 on 

 to choose 

.

•

When JPEG images are recorded, 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 memory card. However, the compression process is irreversible, 

meaning that the raw data cannot be recovered once it has been compressed. 

Moreover, the image processing results in a deterioration in quality.

•

A RAW image is raw data recorded with nearly no deterioration in image quality 

resulting from image processing inside the camera. This data cannot be used as is for 

viewing or printing on a computer. The supplied software (Digital Photo Professional) 

must first be used to convert the image data to a JPEG or TIFF file. When converting 

the image data, you can adjust the image with minimal deterioration in image quality.

Simultaneously Recording RAW and JPEG Images

Two images, a RAW image and a JPEG image will be recorded with each shot. 
Since a JPEG image is also recorded, you can print the image or view it on a 
computer without using the supplied software.
The file extension for RAW images is ".CR2", and the extension for JPEG 
images is ".JPG". The JPEG images will be recorded with 

 recording 

pixels with 

 image compression.

●

Press the 

n button, and choose 

[Record +

] 

from 

the 

4 tab and 

press the 

qr buttons to choose [On].

Shooting in RAW