Changing the recording pixels and compression ratio of an image taken (EOS REBEL T6i / EOS 750D)

Article ID: ART161429 | Date published: 08/04/2015 | Date last updated: 09/18/2015


Changing the recording pixels and compression ratio of an image taken (EOS REBEL T6i / EOS 750D)


Setting the Image-Recording Quality

You can select the pixel count and the image quality.

1. Set the camera's power switch to [ON].

2. Press the [MENU] button to display the menu.

3. Press the [ ], [ ] keys to select the [  ] tab.

4. Press the [ ], [ ] keys to select [Image quality], then press [ ].

5. Press the [ ], [ ] keys to select the desired image-recording quality, then press [ ].
The respective quality’s pixel count and number of possible shots will be displayed to help you select the desired quality.

  • I want to select the image-recording quality matching the paper size for printing.
If you want to crop the image, selecting a higher quality (more pixels) such as , , + , is recommended.
is suitable for playing the images on a digital photo frame. is suitable for emailing the image or using it on a Web site.
Refer to the diagram below when choosing the image-recording quality.
: A2(59.4x42cm/23.4x16.5in.)
: A3(42x29.7cm/ 16.5x11.7in.)
: A4(29.7x21cm/11.7x8.3in.)
: 12.7x8.9cm/5.0x3.5in.
  • What’s the difference between and ?
These settings indicate the different levels of image quality caused by different compression rates. The setting produces a higher image quality with the same number of pixels. Although produces a slightly lower image quality, this allows more images to be saved to the card. Both and have (Fine) quality.
  • I was able to take more shots than the number of possible shots indicated.
Depending on the shooting conditions, you may be able to take more shots than was indicated. It may also be fewer than indicated. The number of possible shots displayed is only approximate.
  • Does the camera display the maximum burst?
The maximum burst is displayed in the viewfinder’s right side. Since it is only a single-digit indicator 0 - 9, any number higher than 8 will be displayed only as "9". Note that this number will also be displayed even when no card is installed in the camera. Be careful not to shoot without a card in the camera.
  • When should I use ?
images must be processed on a computer. For details, see the below sections, [RAW] and [RAW+JPEG Large (Fine)].


is the raw image data before it is made into or other images. images cannot be viewed on a computer without the use of EOS software, such as Digital Photo Professional. However, you can perform various adjustments on them that are impossible with other image types such as . is effective when you want to precisely adjust the image yourself or shoot an important subject.

RAW+JPEG Large (Fine)

+ records a and a 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). images can be viewed or printed even with a computer that does not have the EOS software installed.
: File number
: File extension

RAW Image Processing Software
  • The use of "Digital Photo Professional" (EOS software) is recommended when viewing images on a computer.
  • Older versions of Digital Photo Professional may not be able to process RAW images taken with this camera. If an older version of Digital Photo Professional is installed on your computer, update (overwrite) it as follows.
→ When the software CD-ROM (EOS DIGITAL Solution Disk) is provided with the camera:
- Install Digital Photo Professional from the CD-ROM.
→ When the software CD-ROM (EOS DIGITAL Solution Disk) is not provided with the camera:
- Download a version of Digital Photo Professional compatible with this camera from the Canon Web site.
  • Commercially-available software may not be able to display images taken with this camera. For compatibility information, contact the software manufacturer.
  • For details about the number of recordable images, please see the following page:

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