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09/14/2006 11:53:40 AM · #1 |
I wa trying to do some noise reduction in Neat Image (Just got it by the way) and can't seem to make it work right. Can I please get some tips on how to use it.
Thanks in advance
Stephen |
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09/14/2006 11:55:52 AM · #2 |
You might want to post some images and say what you are trying to do and what issues you are having.
Message edited by author 2006-09-14 11:56:02.
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09/14/2006 12:08:01 PM · #3 |
Before investing too much time in neat image, take a look at noise ninja, I switched a couple of weeks ago and have to say NN is much better.
Only problem is, you have to spend money to use NN as there is no free version like Neat Image |
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09/14/2006 12:11:32 PM · #4 |
| I use noiseware pro and its a great program. I believe they have a free version as well. |
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09/14/2006 01:00:42 PM · #5 |
Now to answer your question instead of sell you something you don't need.
Once you open an image you have two ways to 'find' the noise - there is an auto feature or you can load a noise profile for your camera, at the ISO of the image you want to clean up. You can make noise profies (the best solution, and some folks go the extremes of doint one for each shutter speed) -the easiest is to dowlnload the profiles from the NI site that others ahve uploaded there. they work well most of the time.
I never play with any of the slider controls - too confusing and the default works perfectly fine.
at the top left are two button on the top tab (device noise profile). you can use the Auto button. option 2 is over on the right is a floppy icon - click it and it will open a browse window where you go get the profile file.
then click the second tab (noise filter settings). Click the APPLY button.
save the file.
that's all there is to it, unless you want to batch a bunch of files, which is not harder really, but it works best if you set up NI to know where the profiles are are for noise - it can process a subdirectory of images shot at different ISO with different cameras and get it all right!
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09/14/2006 04:38:53 PM · #6 |
Hello and thanks for the advise. Here is a sample of the type of image that i want to fix.
//i64.photobucket.com/albums/h177/MongooseDoggie/MelissaLowKey1small.jpg |
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09/14/2006 07:28:06 PM · #7 |
NI didn't make a nice profile -small image and limited colors. Anyawy, doubled it's size to get a profile, did a clean up with auto profile and then shrunk it back to 800 wide, and did a USM of 275% .4, 1 and save for web at 100%.
The exif says this was shot at ISO 64..is that right?
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09/14/2006 08:05:49 PM · #8 |
The image as posted is too small to get a good profile, and possibly too dark. But if it were giving a good profile, then my usual trick is to use the menu at the upper right (where it says "default" with a down arrow) to select "Advanced" and then the option that removes only half of the weaker noise to keep more detail and tweak it from there.
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09/14/2006 09:21:30 PM · #9 |
| It was shot at ISO 64 and photobucket doesn't like a full 8mp image. Also what is USM? Thanks for the help everyone? |
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09/14/2006 09:35:10 PM · #10 |
What do you use to edit your photos?
I use Photoshop V7, so if you use anything else i'm not much help...
Anyway, USM is UnSharpMask - it's in PS under FILTERS>SHARPEN. the numbers i gave are the amount, the radius and the threshold.
All digital cameras have an AA (anti-aliasing) filter infront of the sensor and it has the effect of slightly softening the image. For printing it's usually not much of an issue, but for web display sharpening has a tremendous effect on the image. On your image, check the facial details and hair on her arm compared to my sharpened image.
Each camera (and even each type of picture - landscapes get more sharpenig than do portraits) has it's own unique best routine. Canon on the dSLRs recemond a pass of USM at 300%, .3 and 0 to offset the AA filter. Ioften find 275% -300 and .4 radius works well. other photogs use a threshold of 7 or so for facial portraits to keep pores from becoming too obvious.
that's a LOT of noise at ISO 64! But then, I'm used to Canon dSLRs at this point and routines shoot weddings at ISO 800 and 1600 without any noise reduction. If your image was underexposed and you used levels or curves to brighten it up that will make noise MUCH more noticeable, even on a dSLR.
shot at ISO 800
Shot at ISO 1600
//i.pbase.com/o4/77/624677/1/62628870.n3iS3tRe.sharoncolor5x7IMG_4354.jpg
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09/14/2006 10:00:42 PM · #11 |
| Oh ok. I use PS CS2. Could it be my lighting? Would more light (more direct light) help the noise issue? Again, thanks for the help. |
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