Friday, November 14, 2008

More (or less) noise

So I have done something similar as Ivan to show how Camera Raw 4 handles noise for comparison with the Canon software. The image was taken outside at 530 in the morning in May so still quite dark. It was shot with my Canon 40D, fixed 50mm 1.4 lens, 1/60 at f2.0 and the ISO was at 3200. The first screen shot shows the unprocessed RAW file zoomed in at 165%. So you can see noise in the sky and along the edges of the building. The second screen shot shows the imagealso at zoom 165% but processed in Camera RAW 4. All I have done is reduced the luminance and colour noise, and corrected any colour aberrations. No other adjustments were made. Now, I didn't spend a lot of time on the processing so you can consider this as a minimal result.



Colin said...

Quite remarkable. Do you know if the denoise filter is one of those wavelet types?

Damian Lidgard said...

I don't know but perhaps you can provide some more detail on wavelet types.


Anonymous said...


I find the image too small to really see the noise difference. Both look similar to my eye - can you repost a bigger file?