I just recently installed CHDK on a Canon Powershot 780 12 Megapixel Camera.
I’m looking for samples from anyone who is using CHDK or some other process to retrieve RAW files from these compact cameras.
I’m very impressed with CHDK, and with these new compact cameras, being able to produce a RAW files is at once exciting, but also points out some of the inherent problems with these small compact cameras in the 10+ MP range.
On the Powershot 780, for example, once downloading a DNG file through CHDK, it’s clear that color noise is rampant with this camera and that the pre-processing in the camera, among other things, actually blurs the colors in the image to reduce the noise (legal disclaimer: this is just my opinion from looking at the data).
There’s also a large amount of other CCD noise.
I’m looking for anyone who can send me RAW .DNG samples (and the camera-written JPEG) from similar compact cameras through CHDK (or another methods to extract RAW data).
Based on my results so far, I’ve been able to do some pre-processing that the camera can’t do for lack of time. From what I’ve seen across the web (which is a small set), I can see these problems inherent in the RAW-based originals.
With the limited file set I have taken myself, I’ve been able to get results from the RAW files that have been a marked improvement over the JPEG, by using different noise-removal methods. I’ve also been able to use highlight reduction methods to increase the dynamic range, as well.
I’d like to do more testing and create a development path to working with these RAW files and enhancing (greatly) the pictures possible from these compact cameras.
If you’re interested in contributing samples, please e-mail me at rob@sagelighteditor. I’m looking for ones I can use in RAW (.DNG) vs. JPEG fashion, and am looking for aesthetic shots, like landscapes, flowers, people, etc. I’d want files I can feel free to use without restriction (I mean, to showcase as before/after examples).