Noise in pics
Jan 12, 2015 08:50:28 #
Jim Bianco wrote:
When I take some noise out of my pics in LR 4,it takes the noise out of the whole picture,I just want it out of the sky ,is there any way I can do could this without taking it out of the whole picture? It tends to make my entire picture muddy or not as sharp.Thanks Jim Bianco
I have been using DXO Optics Pro (elite version) on RAW files and it has a feature called "Prime Noise" removal. It is excellent. The problem with lightroom noise reduction "Luminance" is that is softens the picture as it is applied. And the sharpening adds noise as it is applied. You can't win.
But DXO Optics removes the noise without softening the image. It is a global noise reduction also. I have found that when I return to lightroom and do some sharpening, that I don't see noise returning since it is completely gone.
This effect ONLY works on RAW, not JPEG. If the image is JPEG, the conventional noise reduction method can only be applied and it is not much better than lightroom's method.
Jan 12, 2015 14:36:18 #
Jim Bianco wrote:
When I take some noise out of my pics in LR 4,it takes the noise out of the whole picture,I just want it out of the sky ,is there any way I can do could this without taking it out of the whole picture? It tends to make my entire picture muddy or not as sharp.Thanks Jim Bianco
Jim,
There is a very simple tool to take the sharpening out of the sky that is built into LR4 (and subsequent versions). When you get to the sharpening process, simply go to the last slider in the sharpening group which is labelled "masking". Make sure you are viewing the entire picture (not zoomed in) and then hold down the Alt key on your keyboard and take the masking slider and move it to the right. You will see your photo in black and white and as you move the slider to the right, things get progressively blacker. The blackness is a mask that is being constructed by LR and when the parts of the picture that you DO NOT WANT SHARPENED are pure black, stop moving the slider. The parts that were pure black are masked off and will not be sharpened. The parts that were not totally black will be sharpened to a lesser amount and the light areas will be sharpened the most. Enjoy.
Jan 12, 2015 16:13:42 #
Jan 12, 2015 16:16:14 #
Shaun wrote:
Jim, br There is a very simple tool to take the sh... (show quote)
But, the OP asked about Noise reduction, not sharpening....
Jan 12, 2015 17:07:41 #
Gene51 wrote:
In addition to the great suggestions here, you might want to download a copy of OnOne Perfect Photo Suite - it's mask creation and refinement tools are excellent. You would create a mask for the area you want to apply aggressive NR to, and leave the rest of the image alone and vice versa. They also have an extremely accurate context-sensitive brush that you can use on the fly to do the same thing. There is only so much you can actually do with any degree of accuracy in a raw converter.
http://www.youtube.com/watch?v=KlLNmvetbiE
This video demonstrates masking with perfect photo in this case restricting sharpening to the areas its wanted. noise reduction should be similar. The perfect brush ensures the masking gets round the fiddly bits. I think you can use this from the free module.
Jan 12, 2015 17:11:57 #
Dngallagher wrote:
But, the OP asked about Noise reduction, not sharpening....
Two sides of a similar brush, noise reduction softens and sharpening sharpens. They both use masking to selectively sharpen or reduce noise. Learning how to mask selectively is the key new area.
Jan 12, 2015 19:18:22 #
blackest wrote:
Two sides of a similar brush, noise reduction softens and sharpening sharpens. They both use masking to selectively sharpen or reduce noise. Learning how to mask selectively is the key new area.
How right you are, never looked that far into filters and brushes yet in Lightroom, live and learn ;)
Jan 12, 2015 22:51:33 #
Dngallagher wrote:
But, the OP asked about Noise reduction, not sharpening....
You get noise reduction in things like the sky by not sharpening them. Do you dispute this statement?
Jan 12, 2015 23:21:48 #
I don't dispute your statement,it's just when I take the noise out of the sky it takes it out of the whole photo which I don't want.It takes the sharpness out of the whole photo.I want the noise out of the sky only not out of the whole photo.Thanks Jim Bianco
Jan 13, 2015 01:40:11 #
Gene51 wrote:
In addition to the great suggestions here, you might want to download a copy of OnOne Perfect Photo Suite - it's mask creation and refinement tools are excellent. You would create a mask for the area you want to apply aggressive NR to, and leave the rest of the image alone and vice versa. They also have an extremely accurate context-sensitive brush that you can use on the fly to do the same thing. There is only so much you can actually do with any degree of accuracy in a raw converter.
:thumbup: :thumbup: :thumbup: Use it all the time. Very good suggestion.
Jan 13, 2015 04:24:04 #
Jim Bianco wrote:
I don't dispute your statement,it's just when I take the noise out of the sky it takes it out of the whole photo which I don't want.It takes the sharpness out of the whole photo.I want the noise out of the sky only not out of the whole photo.Thanks Jim Bianco
Thats why you use masking to apply the effect to just the areas where you want it. It's like digital masking tape like when your painting your window frames and avoiding painting the glass. you have 2 layers of the image which are combined like two acetate sheets when you look at the two sheets whats on the top sheet covers whats underneath but where the top sheet is clear you see the bottom sheet.
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