Canon CHDK Quick Start Manual page 19

• Disable RAW @ EV Bracketing
Disable RAW file-saving when you are using any of the high-speed bracketing features.
• Disable RAW @ Edgeoverlay
Disable RAW saving while using Edgeoverlay.
• Disable RAW @ Auto
Disable RAW saving while using Auto shoot mode.
• Warn when Exception?
Displays a "RAW Disabled" OSD warning in a selectable color when any of the RAW File-
Saving Exceptions are enabled and RAW file-saving is turned on.
Dark Frame Subtraction
Controls the application of the Dark Frame Subtraction feature of your Camera onto the RAW
file. Dark Frame Subtraction is a function used to reduce the effects of sensor noise when the
exposure time is 1.3 seconds or longer.
• Auto – Performs a DFS on exposures 1.3 seconds or longer.
• Off – Never performs a DFS.
• On – Always performs a DFS.
By always performing a dark-frame subtraction the noise caused by the hot-pixels will be
removed from any image. There will be a slight increase in processing time.
Only First RAW in Series
When shooting in continuous mode, this will only create a RAW
capture for the first image. Subsequent images will not have
RAW captures. This allows rapid continuous shooting.
RAW File in Dir with JPEG
Saves RAW files in the same folder as the JPEG files. If disabled
then RAW files are always saved in the 100CANON folder.
RAW File Prefix
CHDK lets you name your raw files with any combination of the standard prefixes IMG_,
CRW_, SND. If you are going to process the RAW files with DNG4PS-2 then setting a prefix of
IMG_ will allow DNG4PS-2 to retrieve EXIF data from the accompanying JPEG.
RAW File Extension
Set the extension to be used on RAW files. so the files are visible when you connect the camera
via USB.
RAW subtract extension
Using more than one extension with the same prefix can cause a problem with USB listing.
See:-
http://chdk.setepontos.com/index.php/topic,2045.msg18862.html#msg18862
< Raw parameters < Main Menu
Enable [•] / Disable [ ]
Enable [•] / Disable [ ]
[CRW_, SND_, IMG_]
[.CRW, .CR2, .THM, .WAV, .JPG]
[.CRW, .CR2, .THM, .WAV, .JPG]
Enable [•] / Disable [ ]
Enable [•] / Disable [ ]
Enable [•] / Disable [ ]
Enable [•] / Disable [ ]
< Raw parameters < Main Menu
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Thanks reyalp.