Canon EOS Rebel T5i 18-55mm IS STM Lens Kit 手册

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页码 388
91
3
 Setting the Image-Recording Quality
1
 is the raw image data before it is made into 73 or other images. 
Although 1 images require software such as Digital Photo 
Professional (provided, p.364) so that they can be displayed on the 
computer, they also offer flexibility for image adjustments possible only 
with 1. 1 is effective when you want to precisely adjust the image 
yourself or shoot an important subject.
1
+73 records both a 1 and 73 image with a single shot. The 
two images are saved to the card simultaneously. The two images will 
be saved in the same folder with the same file numbers (file extension 
.JPG for JPEG and .CR2 for RAW). 73 images can be viewed or 
printed even with a computer that does not have the software provided 
with the camera installed.
About 1
About 1+73
File number
File extension
0001 . CR2
1  image
73  image
0001 . JPG
 
To display 1 images on a computer, using the provided software is 
recommended (p.364).
 
Commercially-available software may not be able to display 1 images 
taken with this camera. To see if the 1 images are compatible with 
other software, check with the respective software manufacturer.