View Full Version : Help with noise reduction
RbnDave
19th of October 2003 (Sun), 22:47
I didn't have my tripod along so I had to turn up the ISO for this shot. It's taken with ISO 1600. I did a quick edit to make this presentable, but if you look too close you'll find some editting mistakes and a lot of noise.
Is there a way in Photoshop Elements to reduce the noise? I used the noise reducing filter and it had little or no effect.
http://www.pbase.com/image/22473115/large.jpg
One of you has to have a trick or technique.
Thanks
Dave
ilya
20th of October 2003 (Mon), 08:17
The easiest thing to do is download Neatimage. They have a free fully functioning demo that works great. I cannot achieve nearly as good results in PS.
slejhamer
20th of October 2003 (Mon), 16:18
It looks good for ISO 1600 - very usable. The color temp seems odd to me, but that's a different issue. ;)
NeatImage will have a hard time with that shot as there is not much of a solid area from which it can sample. It's a great program otherwise.
Try the free "digital deluxe toolbox" actions available here: http://www.2morrow.dk/75ppi/coolpix/actions/
It's not bad, not great, but I've found that it will help reduce high ISO noise without much loss in detail if you run it with the optional ISO Grain action.
Conk
20th of October 2003 (Mon), 18:21
Mitch is right about Neatimage and also the issue on the colour.
Even though there isn't many large solid area's to sample from for neatimage I gave it a go anyway. I used the area bottom left on the floor and then used the auto tune button. It reduced the noise very well but like Mitch was saying there is a huge reduction in detail.
What I tried then is a little trick to bring out detail and not over contrast the photo.
-layer>duplicate layer>ok
-with the duplicate layer highlighted in the layers pallet select filter>other>high pass 2.0.>ok
You might find that a setting of 2.0 a touch too much. Adjust to desired level. 1.5 may be enough.
-With the copy layer still highlighted select>overlay.
To see the difference click and remove the eye in the layers pallet.
As you'll see when you apply the high pass filter the edges beneath the grey will "pop" out.
atotos
15th of November 2003 (Sat), 12:39
Thanks for pointing out NeatImage. It has helped me to remove quite a bit of noise from my eclipse pictures. None has the quality of some of those posted here, just on a very cloudy night and no telescope, but at least now they look a bit better ;)
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