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Sources, and for further study :–

http://encyclopedia2.thefreedictionary.com/bit%20depth http://www.cambridgeincolour.com/tutorials/camera-sensors.htmhttp://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.htmlhttp://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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