Ok there is that footnote saying there are non-linearities at both end but what linearities and to what degree? Have a look at the graph showing this (they give a plot of the red channel) in your third link. From that it appears there are major non-linearities in the shadows and imperceptible problems in the highlights.
-----Original Message----- From: Aahz Maruch [mailto:[email protected]] Sent: 12 July 2013 15:53 To: [email protected] Subject: Re: [Darktable-users] Bracket shot workflow? On Fri, Jul 12, 2013, Rob Z. Smith wrote: > > Well I randomly picked the first and third articles you quote to read > and amazingly both of them appear to support the generally understood > position that RAWS exposed to the right, short of clipping, produces > optimum results rather than the opposite you are suggesting. > > a) Dpreview article: The OPENING WORDS in the first article you quote > actually say the opposite. > > 'Sensors are linear devices. If you double the amount of light, the > sensor output will double, as long as the pixels are not full[1]. Once > a pixel reaches full capacity, it will give a constant or "clipped"' Do you see that "[1]"? That means there's a footnote. If you look at the footnote, it says: 1. (1) In practice, there are some non-linearities in the darkest shadows and brightest highlights. Also, some cameras, e.g the Nikon D2X, preprocess the sensor data before the ADC. I admit I deliberately suckered you to see whether you'd actually read the links I posted. ;-) -- Hugs and backrubs -- I break Rule 6 http://rule6.info/ <*> <*> <*> Help a hearing-impaired person: http://rule6.info/hearing.html ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users The content of this email is private and confidential, and unless otherwise stated only the intended recipient may use the content of this email for its intended purpose. If you are not the intended recipient, you may not retain, copy, forward or disclose the information herein, and we ask you to notify the sender or contact our Customer Services department on 0844 633 1000 or at [email protected] The copyright and all other intellectual property rights subsisting in or to the contents of this email belong to NHBC or are used with the permission of the owner and all such rights are reserved. Recipients are asked to note that opinions, conclusions and other information in the contents of this email that do not relate to the official business of NHBC are neither given nor endorsed by NHBC. This email has been scanned for viruses, but NHBC does not accept any liability in respect of loss or damage caused by any virus which is not detected by its virus detection systems. Data Protecti on Act 1998. NHBC is the Data Controller for the purposes of the Act. Your personal details will be stored and processed in accordance with the Act for the purposes of dealing with your enquiry or claim and for research and statistical purposes. If you make a claim under a Buildmark policy you agree to your data being 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. NHBC, the National House-Building Council, is a company registered by guarantee in England, registration number 320784, and it is authorised and regulated by the Financial Services Authority. ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
