Thanks Jo, I wonder if I have misunderstood.
Say I take an image at 800 ISO and profiled denoise handles it just fine, but
then I come along and hit it with shadows and highlights or otherwise boost
shadows by two stops to pull out detail. My eyes now tell me that I can see
noise in those lighter shadows they couldn't see before and the denoise
settings needed to deal with those pushed shadows are sort of equivalent to two
stops higher at 3200 ISO not 800. Is this my imagination or is that how it
actually works?
Rgds,
Rob.
From: johannes hanika [mailto:[email protected]]
Sent: 16 December 2013 15:39
To: Rob Z. Smith
Cc: Halgeir Kjønås Rennehvammen; darktable-devel
Subject: Re: [darktable-devel] white dots hight ISO
On Mon, Dec 16, 2013 at 2:03 PM, Rob Z. Smith
<[email protected]<mailto:[email protected]>> wrote:
While we are on the subject of denoise - if I could choose something for my
Xmas list it would be for dt to keep track of how much each pixel (or area) of
the screen has been boosted in brightness by the various modules and then offer
denoise (or a mask) based on the effective ISO we have raised those pixels to.
that's why noise reduction is done before all the modules mess with your data.
-jo
This email is confidential and is intended for the addressee only. If you are
not the addressee, please delete the email and do not use it in any way. Please
note that any views or opinions presented in this email are solely those of the
author and do not necessarily represent those of the company. NHBC reserves the
right to monitor all email communications. The recipient should check this
email and any attachments for the presence of viruses. The company accepts no
liability for any damage caused by any virus transmitted by this email. NHBC,
the National House-Building Council, is limited by guarantee in England, No
320784. Registered address: NHBC House, Davy Avenue, Knowlhill, Milton Keynes
MK5 8FP. NHBC is authorised by the Prudential Regulation Authority and
regulated by the Financial Conduct Authority and Prudential Regulation
Authority. NHBC Building Control Services Ltd, registered by guarantee in
England with Company No. 01952969. Registered address: NHBC House, Davy Avenue,
Knowlhill, Milton Keynes MK5 8FP. NHBC Services Ltd registered by guarantee in
England, No 03067703. Registered address: NHBC House, Davy Avenue, Knowlhill,
Milton Keynes MK5 8FP. If you make a claim under a Buildmark policy your
personal details will be stored and processed in accordance with the Data
Protection Act. Your personal details may be passed to others involved with
your claim such as the original builder, or a consultant or remedial works
contractor that we may employ in connection with your claim(s) and matter
ancillary to your claim(s). Other than disclosure provided for in this
statement, we will not pass any data about you to any other party without your
permission unless we are required to do so by law.
------------------------------------------------------------------------------
Rapidly troubleshoot problems before they affect your business. Most IT
organizations don't have a clear picture of how application performance
affects their revenue. With AppDynamics, you get 100% visibility into your
Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk
_______________________________________________
darktable-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/darktable-devel
