Inconsistency in the Preview with Color Noise Reduction

Adobe guys: You have a bad variable access, bad pointer, or something in Camera Raw with regard to Color Noise Reduction...
If I have color noise reduction turned off (set to 0), I see this:
And in fact it converts to just what shows in the preview:
If I bump the Color noise reduction slider up to 1 with the Color Detail slider at 100, I get this wonderful DeBayer smoothing in the preview:
But alas, this is what comes out in the conversion:
The smoothing shown DOES in fact match if one sets the Color Detal slider to 50 at the middle of the scale:
This is just an annoyance, but it does take some trial and error to see what you really want the Color Detail slider set to.
By the way, I notice that the jaggies come and go seemingly randomly when the Color Detail slider is at 100 and I move the Color slider. I suspect you're reading the wrong or random location for Color Detail, or maybe have an overflow/underflow condition somehow.
Object oriented programming - fraught with gotchas.
-Noel

What you are seeing is a limitation of the diagonal/curve behavior of the current demosaic method on colored boundaries, combined with the (preview-quality) color noise reduction with specific settings. It is the demosaic strategy that is at fault here (and is why you see these results in the final exported result).

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Color Noise reduction with BxW

Just wanted to share what I have seen so far with this:
I sometimes use extreme HSL shifts with BxW images to achieve the tonal separation that I am looking for. This can lead to splotchyness, if taken toooo far. I just installed 1.4.1 and tried the color noise reduction filter for this (it was my most desired feature in the 1.4 update)
As of 5 minutes of playing with it I can say it works. It is not perfect, and it does cause a very slight softening of detail (very slight) But it definitely does help to remove a good bit of the aforementioned splotches.

Maybe this is snobbish, if so I apologize. I know that topics go off base sometimes...but this conversation has nothing to do with the topic I started. It should really have been it's own topic (for more than one reason. Maybe others need the info about slide shows, but would not look at this due to it's title).
Except for being about noise reduction it has nothing to do with what I wanted to hear other users comment on: The use of the color noise reduction slider with BxW images in 1.4.1
Again sorry if this is rude of me. I don't belong to too many forums and really don't know what the proper etiquette is here.

Adobe Photoshop CC, problem with color noise/pixelation on the monitor display

After downloading Adobe Photoshop CC, my images come in with color noise/pixelation on the monitor display. I've tried checking the color space preferences, but this doesn't help. I didn't have this problem before. Is there anything else I can check? There's no problem with LR, just Photoshop.

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PV2010 Color Noise Reduction Robs Dark Tones

No pun intended.
I thought at first it was the raw-conversion/de-mosaicing, but its turned out to be the color noise reduction.
Here is a the latest example of a picture that looks better in PV2003 than PV2010 no matter what I do, because of loss of clarity / contrast / dark-tones resulting from the new Color Noise Reduction algorithm. Note: This loss can not be restored using clarity or contrast sliders.
This probably ought to be a feature request: A slider that controls the coarser aspects of color noise reduction (color waves or clarity/contrast) versus the most localized aspects (color specs). In this instance, just getting rid of the specs without trying to reduce the waves might leave the dark tones(?) - Something like that. In any case, there is room to improve color noise reduction so that it leaves the dark tones / contrast / clarity in certain cases like this.
(Its a 100% crop of a section of a fish under water)
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PV2010:
The difference is striking when viewing the whole photo from afar...
PS - I just discovered that minimizing noise reduction will maintain the dark tones better - I've therefore added down-throttling of color noise reduction to my PV2003 -> PV2010 practice.
Rob

dorin_nicolaescu wrote:
Luminosity Contrast slider also helps maintain some darker tones.
Indeed it do.
And, last but maybe (or maybe not) least, one can cheat a bit at the end and add some grain, to give the illusion of greater detail / texture. So, if you really want to preserve full detail when converting high ISO shots from PV2003 to PV2010, you need to:
1. Crank up the luminance noise reduction detail slider pretty darn high (if not all the way up).
2. Crank up the luminance noise reduction contrast slider pretty darn high (if not all the way up).
3. Minimize color noise reduction amount.
4. Crank up the color noise reduction detail slider fairly darn high (not all the way up! - color artefacts - bleh).
5. Maybe add a touch of grain (pretty darn low).
(I've left out the luminance NR amount slider and sharpening because they are the more obvious ones).
I'm guessing I'm not the first person to fall into the trap of trying to recover detail lost by noise reduction by decreasing luminance noise reduction amount and increasing sharpening detail (and maybe amount too), and winding up right back where you started - too much noise. The detail/contrast sliders of the noise reduction controls really work a lot better for that, and minimizing color noise reduction is also a hot tip for you detail junkies.
I hope I'm not the last person on this forum to realize what is now seeming sort of obvious to me, whilst everyone has a good laugh...
(I had previous just left color noise reduction and detail, plus luminance NR contrast at their defaults (I discovered the importance of the lum.NR detail slider long ago...) - but not anymore. It has helped me to articulate all this - hope it helps somebody else too..........
Rob

Can i change the preview background color?

Hi
can i change the preview background color?
it's gray , may i change it?
thanks
i use bridge cs6

can i change the preview background color?
Yes you can do so in the Bridge preferences under general both Ui interface and image backdrop can be changed
In the same preferences Cache you can change the location of the central cache to where ever you will. But you have to realize that if you use an external disk this can cause all kinds of problems regarding speed, performance and permission issues. best to keep it on an internal disk and having an SSD available will be even better because you will benefit from performance and speed very much.
it's gray , may i change it?
As long as you have a legal version and it is able to change then feel free to set it to your own custom wishes...

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HT4790 My Mac OS Lion 10.7 FileVaulted HD does not boot, prohibitory sign, stop sign appears some minutes after boot starts. Disk Utility repair shows four error messages: Unable to bootstrap transaction group 2517: inconsistent crosscheck (the same with

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Error: Storage system verify or repair failed.
(the same with 2518, 2519 and 2520 transaction group)
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Most likely culprit is your Lacie drives which are notorious for flaky power supplies which cause just the sort of erratic behaviour that you describe. Have had similar issues myself. Lacie has been good about replacing my power converter-- twice. If you have seven of them, good luck finding the bad one or more. Like I said, the behaviour is erratic. Sometimes it'll work sometimes not. I can't comment on Samsung drives because I've never used them and have never heard anything about them. Same with Softraid. Why not just use Disk Utility. Sounds like you're ready for an external hardware raid. This will be much faster, much more reliable, and may even be cheaper than seven firewire drives. Check out G Tech, and Maxx Digital for starters.
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Terry

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firstlaunch wrote:
You can locate it in the following directory:
System/Library/CoreServices/RawCamera.bundle
Get info on this file. If it is version 2.0.9, it's the latest dcrcu 2.2. You want to delete this file.
Once you delete, go to the following location and re-install the old one. It should be 2.0.6...I think.
http://www.apple.com/support/downloads/digitalcamerarawcompatibilityupdate21.htm l
Reboot your system.
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Hi Everyone,
I use Color management all the time for correctly interpreting YUV footage in CS3, when I try the same techniques in CS4 I cannot get a realtime preview until I turn Color management off ... is any one else experiencing this ?
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I tried the same thing on my MacBook Pro and there was no issue. Here's my specs:
Processor 2.4 GHz Intel Core i7
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I'd suggest:
Submit bugs to http://www.adobe.com/go/wish . More on how to give feedback: http://bit.ly/93d6NF

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sorry for my bad english.

Hi Rowen,
I sent you a PM. I hope I can help you resolve this issue.
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Just noticed when I crank the recovery slider up (ACR 4.4 Profile), Lightroom stops rendering fit view with color noise reduction applied when I get to 55 in the develop module. i.e. at recovery of 55 and greater, no color noise reduction is applied, 54 and below, color noise reduction is applied.
Not sure what to say about it - just an interesting observation for the hyper-inquisitive...
R

Yeah, it does tend to dull a photo, however with ACR 4.4 (a linear profile) it can be cranked all the way to 100 without screwing up the hues, and I often crank it all the way up as a test and then lower to taste... - that's when I noticed the unexpected connection with the color noise reduction.
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When I try to export pictures of the night sky in Lightroom, they always look brighter than they are in the preview and are filled with white noise/grain. I've tried changing my color management settings, but to no avail. What can I do to fix this?

imgur: the simple image sharer
That's the picture^
Also, doing noise reduction ruins the colour.
Why can't it just export properly...

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You can try and find 3rd party applications that might help you. I'm sure you'll pay, however.
Let this be a very important lesson learned.
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This becomes especially visible on photos with a high amount of noise reduction applied.
When zooming in to 1:1 I see that the noise reduction works as it should. Also when exporting the images the noise is removed as it should.
I wish the non-zoomed preview inside Lightroom was able to show the image with the noise reduction applied more correctly than in version 3.4.
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I entered noise reducer in the help menu and "what's new in imovie comes up" - I am looking for info on the process to apply noise reduction and nothing applied even two layers down in what came up in "what's new in imovie".
I have bought the book iMovie HD 6 & iDVD 6 and it does not give direction on how to apply. It does say page on 157, "this effect minimizes white noise, crowd noise, and hum - but nothing else - no directions on how to apply!
My audio clip is selected in the time line and if it is as simple as selecting the apply button in audiofx, then select noise reduction, then select apply - IT DID NOTHING.
Is this how it works for application and out come?
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jim

No, but the Help menu in iMovie does:
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Tip: To learn how to select multiple clips, see "Selecting clips" below.
Click the Editing button, and then click Audio FX at the top of the Editing pane.
Select the audio effect you want from the effects list.
Adjust the settings for the effect.
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Click Preview to hear the effect.
To stop previewing the effect, click Preview again.
If necessary, repeat any of the above steps until you have the effect the way you want it.
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Inconsistency in the Preview with Color Noise Reduction

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