I have used a long time Canon's Digital Photo Professional (DPP) for processing my raw images. Sometime ago I found RawTherapee (RT) and used it a little, but wasn't really fond of it. I found the learning curve too steep. Couple of weeks ago I learned about LightZone (LZ) and it has been more to my taste than RawTherapee. In LightZone I have more control of the process than I do in DPP, but LZ is easier to grasp and achieve what you want to than RT.
Today I was trying to create similar styles as DPP has (mainly landscape and portrait) and I found significant differences how the programs process the raw image and found that my task is not going to be that easy.
Here are the images, no additional processing, just "developing" the raw image. Images are taken with Canon 600D, EF-S 18-55mm f/3.5-5.6 IS II (@ 55mm, f/9.0, 1/800s, ISO 200).
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| Digital Photo Professional | RawTherapee | LightZone |
Findings
DPP's and RT's RGB curves look quite similar, but the LZ produces totally different curves. The peaks at the shadows have in LZ moved to midtones and the small peaks at high tones are in LZ significantly higher. In fact the in LZ the highest peaks are at high tones as in the two other programs they are in the shadows. The differences are also visible in the image. The Canon's version of the paint of the tram is faded and worn and in LZ the reds and yellows shine bright. RT is somewhere in between, little emphasing reds, nearer to Canon.
I will continue experimenting.
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