Comments on: A700, 6400 ISO, seven raw processors

By: pascal barreiro

pascal barreiro — Sat, 28 Jun 2008 15:14:58 +0000

As I use 99% Silkypix for my pro work (IMO, best colour by far, very good texture redering etc), I would like to compare your results with this software. Could it be possible for you to send me the raw file ?
Thanks

By: springm

springm — Thu, 12 Jun 2008 16:02:09 +0000

I am more than astonished about the excellent results you obtained even with ISO 6400. Myself I am still struggling with A700’s high ISO raws and never getting similar results by using lightzone as I can see in the default (high NR on) jpg’s. In this http://i282.photobucket.com/albums/kk263/springm_photo/raw_jpg_noise.jpg comparison file I have from left to right three ISO 3200 pixel-level image crops, first is pure jpeg, next is lightzone with just the defaults and third is with sharpening - the raws suffer in my eyes extremely from clusters or aggregates of pixels. Sharpening even creates red artefacts which Note that this is example is from a shadowy area of the image as I see the noise most prominent there.

For any hints how to process such shadowy files I would be very grateful

By: gsaronni

gsaronni — Thu, 21 Feb 2008 21:15:13 +0000

Very interesting comparative.

I would like to know if you have checked the configuration you recommend for High ISO JPG, with ARW files, I understand the ARW are affected by the High ISO NR

Finally, I have to say that ADOBE must release a new ACR version that fixes the probelms with ARW files

By: Iliah Borg

Iliah Borg — Thu, 21 Feb 2008 18:48:18 +0000

Dear David,

It is hard for me to understand why you were using RAW mode in RPP, with local contrast switched off and tonal curve set to gamma instead of “film-like”. This is an instrumental mode used for creating camera colour and tonal transforms more then anything else. And of course it switches off any colour “profiles”, so the colours are sure off.

It also seems that you are using an older version of RPP. RPP is updated on a frequent basis, the current version is improved over the one you used; and by the way right now a new A700 profile is in the works - so you can expect further improvements.

AHD is a generic name of the algorithm, different AHD implementations will result in very different image quality.

I would be very much interested in processing this raw file through RPP. I also hope this will help improving the converter further.

–
Best regards,
Iliah Borg

By: Sonolta

Sonolta — Thu, 21 Feb 2008 16:41:25 +0000

We do not want ACR watercolors at high ISO.

ACR needs to be fixed for us high ISO shooters! Nobody said anything about making ACR worse once they fix it. It should be a simple fix so let Adobe do the work…ACR does butcher many high ISO files and you can not deny that fact.

-Sonolta

http:///www.sonolta.com