RAW to JPEG conversion - Noise problem

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JDifool
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RAW to JPEG conversion - Noise problem

Post by JDifool »

Hi there,

I've been using Bibble for a long time now, being a Linux user and appreciating the efforts to produce quality software on this platform.
Naturally I switched to ASP.

I recently did a wedding shooting, in a low light environment most of the time, and I came to realize that the RAW export to JPG files produced a very disturbing amount of noise (not sure if this is the amount of noise or the rendering of it).
I ran comparisons between ASP in Linux and Windows, tried to tweak a few export settings (but was pessimistic about pushing the JPG quality to 100) ; to no avail.
I tried Lightroom to experiment and the JPEG rendering is much better, without a doubt.

Since I mainly use low ISO on a daily basis, I never realized that before. But with higher ISOs, the difference is just staggering, especially on the skin and on plain clothes...

Does someone have any idea/suggestion when it comes to this ? Am I doomed to redo all the editing in Lightroom (since picture settings can't seem to be exported through the standard XMP generation) ?

I'm quite at loss because I have such a neatly organized catalog on ASP ; but what's the point if the pictures you are going to print on paper will be so noisy....

Here is one example of two details of jpg files, one with ASP (1), and one with Ligthroom (2).
1.jpg
2.jpg
Thanks in advance,
and sorry for my faulty English,
JDif
Ascendant
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Re: RAW to JPEG conversion - Noise problem

Post by Ascendant »

Hi,

indeed the processing engine 2012 from Lightroom seems to perform better than Noise Ninja in AfterShot. The main problem with Noise Ninja and Wavelet Denoise are edge artifacts in my opinion.
In your example AP seems to destroy to much detail.

If you have Noise Ninja registered you could try to adjust luma and chroma noise independently. Just as much as you need it. And you could try to reduce the softness parameter a little bit.

But don't expect wonders. Even when playing with different options I did not achieve the Lightroom results.

Kind regards,
Andreas
kaymann
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Re: RAW to JPEG conversion - Noise problem

Post by kaymann »

My results with LR and ASP to yours are exactly the same - actually my LR images are even better. I have found no solution other than using LR....
maggus
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Re: RAW to JPEG conversion - Noise problem

Post by maggus »

Hi JDif,

I´m not sure, but looking to the 2 samples I would say that the 2nd (LR) has more noise, and more details ... due to stronger sharpening ?
Do you use the "standard" NN or the registered one ?
O.K., I know (due to some comparison) that LR is extremely good regarding high-ISO images and you might not be able to achieve same results based on ASP + NN/Wavelet, but as mentioned above, the LR sample has more noise.

BR
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