CHDK allows you to quickly and easily perform bracketing using an extra photo override. CHDK bracketed photos are perfect for making HDR (High Dynamic Range) images in your favorite photo editor. In this post I will guide you though the steps required to take bracketed photos using your Canon Powershot Camera and CHDK.
1. Open the CHDK Main Menu.
2. Load the Extra Photo Operations Menu.
3. Set Disable Overrides to Off.
4. Open the Bracketing in continuous mode menu.
5. Change the TV bracketing value from Off to something like 1 Ev.
If you want you can enable "Clear Bracket Values on Start" which will reset the bracketing settings when you restart the camera.
6. Close the CHDK Menus and exit ALT mode.
7. Switch to the Continuous Photo mode.
8. Hold down the Shutter button to take your bracketed photo sequence.
9. If you want an automated bracketing solution you can press the self timer button on your camera and scroll down to enable the Custom Timer. Press the Menu button when the Custom Timer is selected to change the delay to 0 seconds and the shots to a value like 10. The shots setting will specify how many pictures are taken automatically when you press the shutter button once.
10. When you are finished taking your HDR sequence set the Self-Timer to OFF.
11. After you transfer the bracketed sequence to your computer you can process the images using your favorite HDR software. Photoshop and Hugin / Enfuse are popular tools to create HDR images.
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