Canon CHDK Manuel d'utilisateur télécharger pdf (Page 53)

Sources, and for further study :–
http://encyclopedia2.thefreedictionary.com/bit%20depth
http://www.cambridgeincolour.com/tutorials/camera-sensors.htm
http://designorati.com/articles/t1/photoshop
http://encyclopedia2.thefreedictionary.com/bit%20depth
http://www.wildtramper.com/sw/crw/crw.html
http://www.howtoﬁxcomputers.com/forums/digital-photo/bitdepth-chdk-raw-ﬁles-powershot-79781.html
http://en.wikipedia.org/wiki/RAW_image_format
http://www.photoxels.com/tutorial_raw.html
http://insights.betterphoto.com
http://chdk.setepontos.com/index.php?
PHPSESSID=7973386aacdc6fb7e1b409702af56bbb&board=15.0
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Raw Develop
Main Menu > RAW Parameters > RAW Develop 
Another feature from ewavr. This allows you to select any RAW ﬁle on your SD card and then process it 
into a JPG ﬁle so that you may view it in your camera. Exceptionally handy after using any of the RAW 
Merge features so you can see the result without the need of a computer and extra RAW processing 
software.
Choose "RAW Develop" and you will be presented with a ﬁle-browser display. Navigate to the RAW ﬁle 
that you want to process into a JPG ﬁle. After pressing SET to select your ﬁle, you will be asked to 
"Switch Camera to Record Mode and take one shot." Press SET again to back out of this menu, then use 
your <ALT> toggle button to exit <ALT> mode. Press the shutter button.
Instead of taking an image, it will take that selected RAW ﬁle and now make a JPG ﬁle from it. It will be 
named according to whatever last JPG ﬁlename is in that folder and increment it by 1.
Keep in mind that the EXIF data on this new JPG ﬁle will not reﬂect the original RAW ﬁle. It will use 
whatever camera settings were available at the time that you take the RAW Developing Shot for the 
resulting EXIF data.
Note: RAW ﬁle-saving must be turned ON for this feature to work. If RAW is not turned on, or you select 
a JPG ﬁle for "developing", then no action will take place.
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Bad pixel Notes
Bad, or hot pixels affect DNG images especially for long exposures. In the RAW parameters menu (Main
Menu) is “Bad pixel removal”. Once you have generated a list with all the "bad" pixels for your camera*, 
CHDK can remove them automatically. To obtain this list of hot-pixel coordinates you need to capture a
"dark frame" by shooting an image with your lens completely capped. For shutter speeds longer than 1 to
10 seconds, it's wise to keep a collection of dark-frames on hand for each exposure length that you will be
using in the future, as more warm and hot-pixels show up with extended shutter speeds. After that you
can use this program: http://ewavr.nm.ru/chdk/show_bad.zip
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