Canon EOS 7D - Manual (Page 62)

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3 Setting the Image-recording Quality
A RAW image is raw data output by the image sensor converted to
digital data. It is recorded to the card as is, and you can select the
quality as follows: 1, 41, or 61.
A 1 image can be processed with [3 RAW image processing]
menu (p.192) and saved as a JPEG image. (41 and 61
images cannot be processed with the camera.) While the RAW image
itself does not change, you can process the RAW image according to
different conditions to create any number of JPEG images from it.
With all RAW images, you can use Digital Photo Professional (provided
software, p.282) to make various adjustments and then generate a
JPEG, TIFF, etc., image incorporating those adjustments.
The maximum burst is displayed on the
bottom right in the viewfinder.
If the maximum burst for continuous shooting
is 99 or higher, “99” will be displayed.
About RAW
Maximum Burst During Continuous Shooting
Commercially-available software might not be able to display RAW images.
Using the provided software is recommended.
The maximum burst is displayed even when a card is not inserted in the
camera. Make sure that a card is loaded before taking a picture.
If [8C.Fn II -2: High ISO speed noise reduction] is set to [2: High],
the maximum burst will be greatly reduced (p.224).
If the viewfinder displays “99” for the maximum burst, it means the maximum
burst is 99 or higher. If the maximum burst decreases to 98 or lower and the
internal buffer memory becomes full, “buSY” will be displayed in the
viewfinder and on the LCD panel and shooting will be disabled temporarily.
If you stop the continuous shooting, the maximum burst will increase. After
all the captured images are written to the card, the maximum burst will be as
listed on page 61.