Help Fixing ISO 800 Images, Please

[bonoboprobo]

So I tooks some PowerShot S30 pix with ISO set to 800, and boy are they blotchy. And of course they are slightly underexposed, and of course the subject (my son) was being unreasonably cute.

What tricks, filters, etc. will work salvage these images? Anything?

[soumya63]

You need Photoshop or other image editor which allows you to edit Red, Green or Blue channel separately. The high ISO noise distribution is not uniform accross the channels. Mostly you will found Blue contains the highest noise. So if you just try to smoothen up the noisy channels by applying some Gaussian blur, it will correct the overall noise considerably without softning the resultant picture.

Fred Miranda offers few actions for this, which I bought, but found not very effective. Twicking with channels in Photoshop gives you better controlled result.

There are several software which also works very well. I personally recommend Neat Image. It is a great piece of shareware. It may remove most of your noise (some sharpness will go also). Their web site is absoft.hotbox.ru (http://absoft.hotbox.ru)

Hope this helps.

[kdobson]

I think this filter will do the trick...

SmarterNR (http://knm.webhop.org/Public/SmarterNR)

- Kevin