Removing sky noise
Jun 5, 2016 22:00:00 #
cptiger
Loc: Englewood, FL
Using CC, what is the best way to remove noise from the sky only. I have had old slides and negatives scanned and noise really shows in the sky, moreso than the rest of the photo.
Jun 5, 2016 22:23:45 #
I don't have any suggestion for CC but I will say you can download NIK software for free from Google and the Define module will analyze the noise and make an automatic suggested fix and implement it or you can notate a specific area or spot and it will handle that area only to the degree you desire. It plugs into CC and lightroom. many video's online for your prior review. Best of luck. JB
Jun 5, 2016 22:31:49 #
In Lightroom, the Adjustment Brush has a noise slider that should allow you to 'paint' out some of the noise.
In Photoshop, you could use a layer mask to control where noise reduction is applied.
In Photoshop, you could use a layer mask to control where noise reduction is applied.
Jun 5, 2016 22:32:22 #
Luminance Smoothing only the sky
http://forums.adobe.com/thread/1101314
http://www.youtube.com/watch?v=8rxvY08zJQQ
http://forums.adobe.com/thread/1101314
http://www.youtube.com/watch?v=8rxvY08zJQQ
Jun 6, 2016 08:43:14 #
rwilson1942 wrote:
In Lightroom, the Adjustment Brush has a noise slider that should allow you to 'paint' out some of the noise.
In Photoshop, you could use a layer mask to control where noise reduction is applied.
In Photoshop, you could use a layer mask to control where noise reduction is applied.
LR's radial filter also has a noise slider. I generally use this instead of the adjustment brush because masking is faster. You might also want to lower the blue luminance a little to make the sky darker and more dramatic.
Jun 6, 2016 09:58:03 #
If you can isolate the sky you could use some sort of blur slider to reduce the noise. For small areas I use the BLUR (darken and/or lighten) function on a large brush to smooth out clouds and sky.
Jun 6, 2016 10:22:40 #
You can do it by going to the "reduce noise" brush, go to "advanced" and then click on the blue channel and then move the slider to 100%.
Another technique that works very well is to duplicate the layer, apply a surface blur to the entire picture, and then create a mask for the sky only. Works really good but if there are clouds in the sky, it will make the edges a little blurry
Also, beware the sharpening of a picture, it will often make the noise worse. You can avoid this by doing the same as with the surface blur. Duplicate the layer, apply the sharpening, and then create a mask to mask out the sky alone.
Another technique that works very well is to duplicate the layer, apply a surface blur to the entire picture, and then create a mask for the sky only. Works really good but if there are clouds in the sky, it will make the edges a little blurry
Also, beware the sharpening of a picture, it will often make the noise worse. You can avoid this by doing the same as with the surface blur. Duplicate the layer, apply the sharpening, and then create a mask to mask out the sky alone.
Jun 6, 2016 11:47:26 #
Make a selection of the sky, and remove the noise to the desired amount. You can then invert the selection and remove the noise to a lesser extent in the other areas of the image if you wish.
Jun 6, 2016 11:54:32 #
cptiger
Loc: Englewood, FL
Thanks for the replies; they all sound fairly simple for an old codger! I did take advantage of the free Nik software, quite a bargain. Thanks again. CP
Jun 6, 2016 13:26:25 #
If you have any of the Adobe products, you can get the Nik Collection free and the Dfine2 plugin works great on noise. You can isolate the noise in just the sky area, or you can select the whole image . . . it's really easy to use.
Jun 6, 2016 13:28:19 #
cptiger wrote:
Using CC, what is the best way to remove noise from the sky only. I have had old slides and negatives scanned and noise really shows in the sky, moreso than the rest of the photo.
Make a selection of the sky, create a mask, select the mask, open the channel palette, apply gaussian blur (or aggressive noise reduction) to the blue channel - that should target just the noise in the blue in the sky.
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