Canon CHDK User Manual
Page 19
• Disable RAW @ EV Bracketing
Enable [•] / Disable [ ]
Disable RAW file-saving when you are using any of the high-speed bracketing features.
• Disable RAW @ Edgeoverlay
Enable [•] / Disable [ ]
Disable RAW saving
while using Edge overlay.
• Disable RAW @ Auto
Enable [•] / Disable [ ]
Disable RAW saving
while using Auto shoot mode.
• Warn when Exception?
Enable [•] / Disable [ ]
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
< Raw parameters < Main Menu
Controls the application of the Dark Frame Subtraction feature of the Camera to a RAW shot.
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 an increase in processing time.
Only First RAW in Series
Enable [•] / Disable [ ]
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
Enable [•] / Disable [ ]
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
[CRW_, SND_, IMG_]
< Raw parameters < Main Menu
CHDK lets you name 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
[.CRW, .CR2, .THM, .WAV, .JPG]
Set the extension to be used on RAW files, so the files are visible when you connect the camera
via USB. (See: Downloading via USB, on
RAW subtract extension
[.CRW, .CR2, .THM, .WAV, .JPG]
Using more than one extension with the same prefix can cause a problem with USB listing.
See:-
Thanks
reyalp.
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