Easy Noise Reduction
/forum/topic/1177456/0

1
       2       3       end

Tim Kuhn
Registered: Nov 29, 2006
Total Posts: 45131
Country: United States

I was chatting with a forum member about Noise Reduction (nr) today and I got the idea to put a really easy tutorial that covers the very basics of nr using Photoshop. I figured there are lots of new members who may not know certain techniques. The screen shots here are from CS 6 but I have been using the same techniques since CS 3.

Feel free to ask questions

Tim


First open the image and crop if needed. Then select the subject using whatever method you are comfortable with. Then hit shift-ctrl-i to invert the selection. Or go to the Select menu and choose Invert. This make everything selected EXCEPT the subject.



Tim Kuhn
Registered: Nov 29, 2006
Total Posts: 45131
Country: United States

Then go the Filter menu and select Noise - reduce noise



Tim Kuhn
Registered: Nov 29, 2006
Total Posts: 45131
Country: United States

You then get the following dialogue box. Move the sliders to the values as shown and hit OK



Tim Kuhn
Registered: Nov 29, 2006
Total Posts: 45131
Country: United States

That should blur the noise to a smooth background. If it needs more, hit it again with the same noise filter. Better yet create an action that does this step and assign a hot key, that way you select, invert, hit the key as many times as needed.

That removes the noise from the background. Now if you need the noise removed on the subject, invert the selection again. shift-ctrl-i. Then run a plugin such as Noise Ninja or Topaz Denoise or some other plugin that allows fine tuning and remove just as much noise as needed without loosing too much sharpness.

For this image the subject looks fine without any NR applied. Here is the final product.



Rob Tillyer
Registered: Nov 17, 2007
Total Posts: 13976
Country: Canada

Great job Tim.

Rob



Karl Witt
Registered: Jul 11, 2007
Total Posts: 32849
Country: United States

That will be helpful Tim for many since it does not require a Plug-in program to do.

I am curious here, did you in the finished image do just the BG and leave the bird and the flower alone? I was going to add that you could select items that you want to not run this on, then re-select items again to do with a varied setting perhaps, so in this case, hit the BG hard with NR, none on the bird and maybe a bit to soften the flower?

And it also gives a sense of a sharper subject and more depth in the image

Karl



Cincy Bruce
Registered: Oct 23, 2008
Total Posts: 2202
Country: United States

This is the exact method I use. Thanks for sharing, Tim.

Bruce



birdied
Registered: May 02, 2010
Total Posts: 23585
Country: United States

Thank you so Tim for this. I will definitely give it a try. I am having trouble with noise/grain in high ISO.

Again REALLY appreciate your efforts, and time to do this.

Birdie



Nader Shaikh
Registered: Feb 20, 2007
Total Posts: 64
Country: United States

Greatly appreciated!



KCollett
Registered: Jul 02, 2010
Total Posts: 23538
Country: Canada

Thanks Tim! You've just distilled a 40 page manual into few easy steps.



dalite
Registered: Aug 13, 2005
Total Posts: 3278
Country: United States

Very helpful. Thanks Tim.



Thang
Registered: Jan 25, 2004
Total Posts: 8553
Country: United States

awesome! Thanks Tim. Just learned something new today!



hnilsson
Registered: Dec 26, 2004
Total Posts: 7307
Country: Canada

This is ALSO the EXACT method I use......now.

Thanks GP.

H



thomas_1950
Registered: Nov 19, 2012
Total Posts: 2657
Country: United States

Much appreciated Tim!



Bocarotan
Registered: Jun 01, 2010
Total Posts: 160
Country: United States

Thanks Tim - very interesting.
Bob



surfnron
Registered: Dec 17, 2004
Total Posts: 31603
Country: United States

Thanx Tim - you just validated my method ~ Ron



acjd
Registered: Oct 14, 2012
Total Posts: 1620
Country: N/A

I figured there are lots of new members who may not know certain techniques.

Thanks for putting this up. I'm one of those new members learning these techniques. While I don't use photoshop, it's the principle of not doing NR where detail is important that is the concept.

thanks for this tutorial.



waldr_p
Registered: Apr 18, 2008
Total Posts: 6166
Country: United Kingdom

Thanks for putting this up Tim,

This is basically the technique I use, just want to add that for anyone here using Photoshop Elements (rather than full blown photoshop) this method works fine their too.

Paul.



burtcg
Registered: Feb 11, 2009
Total Posts: 172
Country: United States

Tim:
A very nice and relivant post!



David Leask
Registered: Nov 19, 2003
Total Posts: 35581
Country: United Kingdom

Thanks Tim, great info
David



1
       2       3       end