What's new
By:
Photoshop Gurus Forum

Welcome to Photoshop Gurus forum. Register a free account today to become a member! It's completely free. Once signed in, you'll enjoy an ad-free experience and be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Noise elimination


C

cogboot

Member
Messages
5
Likes
0
Greetings, I have just landed here on the Photoshop Gurus Forum and this "Newbie" section is obviously the place for me.... so allow me to introduce myself by posting my first question: How do I eliminate "noise" with Photoshop CS6 in a picture taken at night with a high ISO value? Any and all advice will be greatly appreciated.

Thanks

C
 
It's a difficult task.. bu you can try:

Filter>Noise>Median
or
Filter>Noise>Reduce Noise

In both cases make the foto much bigger, apply the filters and reduce again...
 
The noise reduction filter in the ACR module of PS was greatly improved in the last couple of years - see attached screen shot. It meets the needs of many photographers. The exact same algorithm is also available in Adobe Lightroom.

That being said, there are many caveats:

1. The word, "elimination" should never follow the word, "noise" in any sentence. LOL. The best you can hope for is "reduction without intolerable blurring"

2. There are easily tens of thousands of research papers on noise reduction algorithms published in the last few years, so this obviously is a difficult, if not impossible task. To reiterate, it's always a trade-off between NR and blurring.

3. An entire cottage industry has sprung up turning the best of the above algorithms into plugins for Photoshop. Google specific products such as "Topaz DeNoise", "Neat Image", or, go for broke, Google {noise reduction plugin photoshop} and prepare to read continuously for the next few weeks. ;-)

HTH,

T
 

Attachments

  • 2013-06-05_142100.jpg
    2013-06-05_142100.jpg
    68 KB · Views: 28
Last edited:
Thank you both for your input. I did indeed manage to "reduce" the noise (as opposed to "eliminate").... I stand corrected!

Very helpful indeed.

C
 
If you do elect to use one of the filters native to Photoshop or a plugin, convert your image for Smart Filters. This will give you the option of applying the filter result where you need it most. Sometimes this is helpful in cases where Tom speaks of losing too much detail.
 
MikeMc said:
Tom is right on...The noise reduction in ACR works better than ToPaz Labs
Click to expand...

Hey, Mike -

I hate to correct you, but I actually never said that.

I said that the ACR NR was good, not necessarily better than Topaz DeNoise. The reason people often think ACR's NR is so good is simply because it is often used on raw data, not rendered raw data (eg, a pre-existing JPG or TIF). I think that if you process the same JPG with both ACR NR and Topaz DeNoise, you wouldn't see a large difference.

Certainly, they are closer to each other in the look they produce than they are to a NR package like "Neat Image" which works best on different types of noise and produces a different final look.

Cheers,

Tom
 
I said that Tom.....ACR does a great job, as I use it in raw images. I had less luck with Topaz.
 
Last edited:
no prob, I am lazy on the keyboard.

I have been doing some playing with Topaz....neat stuff, I have most of it in PS...I'm sticking to CS5 until I cannot improve more, and I have a LOT of learning left in PS.
 
Back
Top