Seeking Advice on How to Reduce Noise in a Photo

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Originally Posted by Shadowman

Colin,

Here is an example of high ISO where everything including camera shake played apart in the final image.

http://i56.tinypic.com/s2u1at.jpg

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Hi John,

Thanks for that ... I'm not sure I get your point though? (I can't see the noise - perhaps befauls of the size, and it appears to be under-exposed looking at the histogram, although I'm surprised the brighter areas of the image aren't showing more on the histogram). I'd probably need to see the RAW file to make more sense of it all.

At first, dont take a shot with high ISO. Any post processing is bad. If you want to have hi ISO photos, so buy the best possible camera. If not applicable, dont try to sell such photos. If you really want, you can do some post processing (denoising). Here are many possibilities. The one built in LR or PS is fast and good. If you want better denoising try one of Nik DFine, DenoiseMyImage, Topaz DeNoise, Neat Image, Picture Cooler, Noiseware ....

F>

Thanks Krooly... Here are a couple of storm cloud photos (Tropical Storm Jova)... Taken with an ISO of 100, used a tripod, and hit auto fix in raw mode or just added a little highlights... are these better? I think they have less noise (the black sky was my first storm photo, and I was keen on fixing it... alas not to be)


http://backup.cambridgeincolour.com/...1copypsd-3.jpg

http://backup.cambridgeincolour.com/...1copypsd-2.jpg

http://backup.cambridgeincolour.com/...0041copy-1.jpg

Hi Christina,
these photos are great and I can't find there any noise! It seems that your new photos are somehow postprocessed. The EXIF info is damaged - all camera data are removed. The noise from your first pack can be fixed using any of programs that I mentioned. It slightly depends whether you want to use it as PS Plugin or as standalone application.

Filip

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Originally Posted by Christina Stobbs

Thanks Krooly... Here are a couple of storm cloud photos (Tropical Storm Jova)... Taken with an ISO of 100, used a tripod, and hit auto fix in raw mode or just added a little highlights... are these better? I think they have less noise (the black sky was my first storm photo, and I was keen on fixing it... alas not to be)

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Hi Krooly,

Thank you...

Here is one of the originals (the ones posted I opened the raw photo in Photoshop Elements, and either hit the autofix button or just added highlights) I am of the understanding that if you just use highlights, shadows, fix white balance (if needed) that this should not add noise to the photos) (And that it is preferable to fix white balance, etc in raw mode) And then I open my photos in Picasa and email or post from there, so perhaps Picasa removes the EXIF info from raw files.

For the photos I just posted I used (A mode, F11, iso 100)

http://backup.cambridgeincolour.com/...s/DSC00039.jpg


Here are the original storm photos and again here I just probably hit the auto or default button in photo shop elements, but now that I look at them I think the originals have less noise than the one I posted first... Up until recently I used Picasa, so I am just trying to learn how to edit photos to enhance them a little without ruining them... (Manual, Bulb, ISO 400)

http://backup.cambridgeincolour.com/...s/DSC01729.jpg

http://backup.cambridgeincolour.com/...s/DSC01721.jpg

http://backup.cambridgeincolour.com/...s/DSC01720.jpg

I think that original images are better. I'd only denoise the images and nothing else.

Filip

I thought so... Thank you for the feedback. I will try.