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15 Messages

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412 Points

Sun, Jul 15, 2018 6:14 PM

7

Camera Raw/Lightroom: Split noise removal for darks and highlights

Traditional weak point of CR / Lightroom is the noise reduction. I found similar problems reported to Adobe 2 years ago but nothing has been improved. The noise removal and sharpening should be split between dark and highlight areas. It is obvious taht the noise is much more visible in dark areas of photo. The sharpening and the noise removal should be split into separate areas: dark and light. It should be really easy to implement basing on local corrections with luminocity range.

Responses

Champion

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788 Messages

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13.7K Points

2 years ago

You can do that now by using a luminosity mask and apply the local adjustment noise reduction

148 Messages

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2.4K Points

2 years ago

I believe that it would be great to have seperate noise-reduction filters

2K Messages

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35K Points

2 years ago

Although the sharpening is meant to only be capture sharpening, I agree that especially noise reduction is a weak feature in CR. I normally leave it until I can use a 3rd party filter, but would like it if I had more control over it inside CR. It should be one of the first things we do, and if I have a noisy image, I have to be careful to apply merely a very few global adjustments and leave the image fairly flat so I can take care of the noise before I make it a lot worse. I'll vote for an improvement.

Champion

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1.6K Messages

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28.4K Points

2 years ago

if the LR team could implement a layered/masked workflow, then this problem would be a simple fix... use the range tool to create a mask for the shadows, apply NR.

Champion

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788 Messages

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13.7K Points

You don't need to add a layered/masked workflow to Lightroom to do this.  Just apply a Graduated Filter over the whole image and use the range mask luminance to select the shadows and apply the local Noise slider.  

Champion

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1.6K Messages

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28.4K Points

for sure, but of course there are limited options for the local NR slider.

Champion

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788 Messages

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13.7K Points

Probably don't need the options if your are using a mask.  

My hope is Lightroom never gets layers.  Leave layers to big brother Photoshop.  

Champion

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1.6K Messages

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28.4K Points

Got news for ya... each local adjustment is basically a layer with a mask, but limited access to the controls. CaptureOne figured this out a long time ago, and miraculously the world didn't end after they implemented.

Champion

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788 Messages

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13.7K Points

I think local adjustments and all other adjustments are parametric commands stored in a database.  Look at a preset with a simple radial filter.  It only has a few bytes of parametric data.  Photoshop layers can double the size of the file.

You can call them layers if you want.

148 Messages

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2.4K Points

Robert Somrak, is there a tutorial anywhere regarding this way of noise-reduction? Since I am working as a stage-photographer, I have to deal with noise on relatively high levels (I am not using my Lumix G9 beyond 6400) regularly. using a masking filter like the graduated filter would really help

Champion

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788 Messages

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13.7K Points

Christian

1)Create a Gradient Filter with the 3 lines VERY close together.
2)Drag the center line so ALL 3 LINES are off the photo.  You may have to zoom out  to less than fit view to do this although I have always done it in fit view.  This essentially creates a mask over the whole photo you can adjust with the Range tool.
3)Apply the Luminance Range Mask to select either shadows or highlights
4)Apply local noise reduction.

I would probably use global noise for highlights and shadows and then apply further local noise using the above technique for extra noise in the shadows.

You can also use a large radial filter to select the whole photo but I find using the gradient filter much easier.

If you have any more question let me know.

PS. You can duplicate these masked gradient filters for more effect.

15 Messages

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412 Points

Please notice that noise reduction option in CR filters has nothing to do with noise reduction section in Detail tab. It seems that this kind of noise reduction in allowed in filters is very simlified version of mentioned one. It makes this option almost unuseful. 

To people who want to achieve wonderful results in noise reduction: just use DxO Optics Pro 11 with prime noise reduction mode. I have never seen better quality of NR. Unfortunately there is no way to continue working with CR with RAW files. DxO can't save the results as RAW files :-(. 

184 Messages

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3.9K Points

2 years ago

maybe this is basically what people are saying here, but you could create a layer with your photo content, create a mask for luminosity, and then apply the filter.  Then combining layers would show the filter effect only in the desired luma range.