CHDK Forum
Using CHDK => RAW Shooting and Processing => Topic started by: pineyphotosnj on 03 / October / 2010, 01:07:15
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I finally managed to get CHDK working on my sx120is and took a whole bunch of RAW files (.crw) today, but now I cant seem to get Rawtherapee to open them, the files wont display and I have the latest version of RT. I have tried DNGPS2 converter with no luck as well, nothing comes up.
Apparently dcraw STILL hasn't supported the sx120. >:(
Is there ANY way to process these files, or am I out of luck and stuck with just the .jpg?
I had some difficult lighting and was really looking forward to getting some nice photos.
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Unfortunately I put the settings in for the sx200is into DNG4PS and it still isnt converting the files. I cant even get them to display!
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I found the fix for the DNG converter on my own. I had to make my own profile for the SX120 IS from the sensor data at
http://chdk.wikia.com/wiki/SX120IS. (http://chdk.wikia.com/wiki/SX120IS.) It is converting now.
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I've noticed that the .DNG files have more noise than .JPGPs on the SX120IS.
I'm using sx120is-100b-0.9.9-912-full version of chdk.
Is there a way that I can fine tune settings to get a better RAW .DNG?
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I've noticed that the .DNG files have more noise than .JPGPs on the SX120IS.
I'm using sx120is-100b-0.9.9-912-full version of chdk.
Is there a way that I can fine tune settings to get a better RAW .DNG?
DNG is the the same data camera generated the jpeg image from. If you want noise reduction, you need to do it with image processing software on your PC. The whole point of raw formats is to allow you to decide how it is processed after the fact, rather than processing it on the camera. Raw in general does not have any noise reduction applied to it, so there are no options in this area to tune.
Dark frame subtraction and badpixel processing are applied to DNG. These aren't strictly "noise reduction" but they do have some impact on the resulting image quality.