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Best way to get rid of color noise/artifacts?
- Thread starter VKing
- Start date
http://www.neatimage.com/I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Cheap, effective, both a Photoshop plugin & a standalone app.
In one word : great.
And btw, it runs fine under Wine with Linux & FreeBSD ;-)
Noel Carboni sells a very useful (and inexpensive) Photoshop action for this, and can be found at: http://home.att.net/~ncarboni/PhotoshopActionsForSale.htmlhttp://www.neatimage.com/I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Cheap, effective, both a Photoshop plugin & a standalone app.
In one word : great.
And btw, it runs fine under Wine with Linux & FreeBSD ;-)
-John
--
'A foolish consistency is the hobgoblin of little minds'-Emerson
LoriA
Well-known member
I agree - I got those actions and they really work well. I was surprised at how well for the price actually. For luminance noise they seem to lessen the visual effect of the noise somehow, smoothing out the image while retaining the actual details, texture, and shading. I wrote a message about how these actions worked on my D30 images a few days ago...Noel Carboni sells a very useful (and inexpensive) Photoshop action
for this, and can be found at:
http://home.att.net/~ncarboni/PhotoshopActionsForSale.html
http://forums.dpreview.com/forums/read.asp?forum=1019&message=5385363
Lori
Thanks a lot.I will definitely investigate these options.I have a newly purchased Canon 10D,and would like to use available light as source as much as possible.In other words,will need all the ISO/ASA I can get,hopefully with the end result being files without too much color noise.
We use Neat Image here.
--
Cheyenne Cloud, LLC
Poster-Sized Digital Prints
http://www.stores.ebay.com/cheyennecloud
--
Cheyenne Cloud, LLC
Poster-Sized Digital Prints
http://www.stores.ebay.com/cheyennecloud
Neat Image has the absolute best control over any image. Noel's action are targeted more toward the 10D but do a decent job as well but with less control. The new NI plugin is a must have for any Photoshop toolbox.
These tutorials I did will give you some insight into NI's various uses:
http://www.vizualgroove.com/digitalimaging/neatimage/ni1.htm
A general use explanation of Neat Image
http://www.vizualgroove.com/digitalimaging/neatimage/page1.htm
A simple method for skin retouching using the NI plugin
HTH,
VG
These tutorials I did will give you some insight into NI's various uses:
http://www.vizualgroove.com/digitalimaging/neatimage/ni1.htm
A general use explanation of Neat Image
http://www.vizualgroove.com/digitalimaging/neatimage/page1.htm
A simple method for skin retouching using the NI plugin
HTH,
VG
I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
John DeMott
Forum Enthusiast
There is a simple technique in Photoshop that I have used, which seems to works pretty well. Convert the file to Lab mode, and perform a Gaussian Blur on the "a" and "b" channels. You can experiment to find the lowest blur setting that removes most of the noise--I usually start around 1 pixel. The basis of this technique is that the Luminance channel is unaffected by blurring and so it preserves the detail in the image, while the blurring affects only color thus reducing the noise. (You can also use Lab mode to good effect with Unsharp Mask--sharpen only the Luminance channel to avoid introducing any color artifacts into the sharpening process.)
I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Michael121289
Member
Has anyone tried NikMultimedia's Define? It does the same thing as the others. But it seems the solution to the issue will cost between $10-$100 depending on what software you want.
I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Micheal,
I tried it and wasn't impressed as it mirrors their other program paradigms. Overpriced for what it does and also they want you to fork out another $40 for a 'custom' camera profile. How can a generic profile be custom??
VG
I tried it and wasn't impressed as it mirrors their other program paradigms. Overpriced for what it does and also they want you to fork out another $40 for a 'custom' camera profile. How can a generic profile be custom??
VG
I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
LoriA
Well-known member
They do offer color noise removal as separate from luminance noise, and I found that important. I know with my images just removing the color noise makes the whole thing look better without losing any detail to speak of.Neat Image has the absolute best control over any image. Noel's
action are targeted more toward the 10D but do a decent job as well
but with less control.
Lori
simon taplin
Member
Convert your file in photoshop to Lab Colour. Go to channels with all chanels visible, highlight layer A. Apply gausian blur (about 7 ) usually does the trick. Apply the same to channel B. This only effects the colour layers. The only draw back is that it desaturates the image slightly but can be corrected by applying curves. This method works a treat without effecting Sharpness.After you have removed the noise, re convert you file to RGB again.I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Thanks
Simon.
http://www.camerabits.comI am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Michael121289
Member
Simon that work very nicely. I use a Fuji S2 and recently shot an event at very low light at asa 1600. Noise was apparent even though I had sharpening turned off. I sharpened it with Nik and then reduced the noise using your technique and it worked well.
Michael
Michael
Convert your file in photoshop to Lab Colour. Go to channels withI am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
all chanels visible, highlight layer A. Apply gausian blur (about 7
) usually does the trick. Apply the same to channel B. This only
effects the colour layers. The only draw back is that it
desaturates the image slightly but can be corrected by applying
curves. This method works a treat without effecting Sharpness.After
you have removed the noise, re convert you file to RGB again.
Thanks
Simon.
KenEis
Senior Member
Go to
http://www.neatimage.net/forum/index.php
and download there free demo software. Its a great noise remover.
Ken Eis - D100 and S45 Nikon 18-35, 28-105, 24-120VR, 70-300, 80-400VR, 500mm and 60mm macro
http://www.neatimage.net/forum/index.php
and download there free demo software. Its a great noise remover.
--I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Ken Eis - D100 and S45 Nikon 18-35, 28-105, 24-120VR, 70-300, 80-400VR, 500mm and 60mm macro
Michael121289
Member
Ken,
I am on a MAC os X machine. NeatImage does not work on a mac but it will soon. I am curious what Fred Mirandas action will do compared to neatimage. For $14.50 it might be worht a try.
Michael
I am on a MAC os X machine. NeatImage does not work on a mac but it will soon. I am curious what Fred Mirandas action will do compared to neatimage. For $14.50 it might be worht a try.
Michael
and download there free demo software. Its a great noise remover.
--I am referring to the color noise that usually presents itself in
image files shot at high ASA (800-and up).What is the best way to
get rid of such artifacts using common software like Photoshop?
Ken Eis - D100 and S45 Nikon 18-35, 28-105, 24-120VR, 70-300,
80-400VR, 500mm and 60mm macro
LoriA
Well-known member
There's an even less expensive set of actions that give you some other functions as well... http://ncarboni.home.att.net/PhotoshopActionsForSale.htmlI am on a MAC os X machine. NeatImage does not work on a mac but it
will soon. I am curious what Fred Mirandas action will do compared
to neatimage. For $14.50 it might be worht a try.
I like the way they don't make my D30 images look really overprocessed like the NeatImage demo I tried.
Lori
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