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CHDK NEWS: New Allbest Build - In Camera RAW Frame Stacking ... and MORE
PowerShot Fans have some new toys to enhance their photography needs. First it was shutter speed overrides from 65 seconds to 1/64,000 of a second. All with perfect flash sync mind you. Something that focal-plane shutters, i.e. DSLRS, can NEVER and will NEVER do. Then it was getting new f/stops to f/16. Then we got high-speed Tv, Av, ISO, and Focus bracketing to as many frames as you need by any step value that you desire. But it just keeps getting better and better. Now you can do astrophotography frame stacking IN YOUR CAMERA. Also useful for special effect or strobe-stop multi-frame motion studies without using any editing software to merge your images, just by using menu options in your camera alone. There's also a new in-camera "RAW Develop" feature so that you can process your RAW file into a JPG file for in-camera review of your desired results. No need to even load your files into a computer and using RAW editing software to see your stacked images. Do it all IN YOUR CAMERA. The new "RAW Merge Sum" feature allowing you to take many minutes or hours long exposures at any ISO that you want with no noise issues. The more frames stacked the more the noise that gets averaged out. Summed & Averaged noise being an inverse-square function. Average 4 frames together to get 1/2 the noise levels or one ISO setting lower. 16 frames taken at ISO800 will give you the noise levels as if taken at ISO100, (the square root of 16, or 4EV steps lower). Use the "RAW Merge Avg" feature to obliterate any noise issues when using high ISOs at high shutter speeds without affecting exposure levels, as would happen with the "Sum" process. For further information see: http://chdk.wikia.com/wiki/CHDK_firmware_usage/AllBest |
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