Hi Bernard; Within darktable, does the reported size of the raw equal the size of the jpg?
David On 13-08-27 06:14 AM, Bernhard wrote: > Hi, > > I uploaded some Photos for comparison here: > http://www.bilddateien.de/transfer/ > From that it appears to me that jpg from camera and jpg from Nikon's > ViewNX give the same, but smaller image size than the raw. > Export from darktable equals the image size of the raw as reported > from ViewNX. > > -Bernhard- > > David Vincent-Jones schrieb am 26.08.2013 19:26: >> The more that I look at this the more confusing it becomes; >> Geeqie has a different size reading from the exif raw data. >> UFraw has another totally larger size in both dimensions. >> I now suspect this is simply a matter of how clipping is performed in >> the raw conversion. I am however surprised that the jpg and raw in dt do >> not 'match'. >> >> David >> >> >> On 13-08-26 09:59 AM, David Vincent-Jones wrote: >>> Hi Jo; >>> >>> The sizes are correct as stated and read directly off the dt image >>> info. >>> The jpg file is larger by 10 lines and if I compare views at 100% I can >>> actually see the lost edge on the raw file. >>> >>> David >>> >>> On 13-08-26 01:22 AM, johannes hanika wrote: >>>> On Sun, Aug 25, 2013 at 1:10 AM, David Vincent-Jones >>>> <davi...@frontier.com>wrote: >>>> >>>>> I was trying to compare values in imported jpg and raw files and >>>>> notice >>>>> that when I exported both as jpg format they appear to be of >>>>> differing >>>>> size. >>>>> >>>>> JPG size ... 4752 x 3168 >>>>> RAW size ... 4752 x 3158 >>>>> >>>> if you mean the other way around it's normal. the raw is a bit >>>> bigger than >>>> the jpg. it has some 10-100 px in width and height more, to >>>> estimate black >>>> levels and to do easy on-chip spatial filtering i would assume. the >>>> black >>>> pixels we usually cut away very early (in rawspeed for example) and >>>> some of >>>> the others are actually useful pixels if you go through the pain >>>> and make >>>> your algorithms aware of the borders. >>>> >>>> -jo >>>> >>>> >>>>> Looking at the files in dt this difference is also seen. Is this a >>>>> Canon >>>>> camera 'feature' or is this something in the dt system? >>>>> >>>>> David >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> >>>>> >>>>> Introducing Performance Central, a new site from SourceForge and >>>>> AppDynamics. Performance Central is your source for news, insights, >>>>> analysis and resources for efficient Application Performance >>>>> Management. >>>>> Visit us today! >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk >>>>> >>>>> >>>>> _______________________________________________ >>>>> darktable-devel mailing list >>>>> darktable-devel@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/darktable-devel >>>>> >>> ------------------------------------------------------------------------------ >>> >>> >>> Introducing Performance Central, a new site from SourceForge and >>> AppDynamics. Performance Central is your source for news, insights, >>> analysis and resources for efficient Application Performance >>> Management. >>> Visit us today! >>> http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk >>> >>> _______________________________________________ >>> darktable-devel mailing list >>> darktable-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/darktable-devel >>> >> ------------------------------------------------------------------------------ >> >> >> Introducing Performance Central, a new site from SourceForge and >> AppDynamics. Performance Central is your source for news, insights, >> analysis and resources for efficient Application Performance Management. >> Visit us today! >> http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk >> >> _______________________________________________ >> darktable-devel mailing list >> darktable-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/darktable-devel >> >> > > > > > ------------------------------------------------------------------------------ > Introducing Performance Central, a new site from SourceForge and > AppDynamics. Performance Central is your source for news, insights, > analysis and resources for efficient Application Performance Management. > Visit us today! > http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk > > > _______________________________________________ > darktable-devel mailing list > darktable-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/darktable-devel ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ darktable-devel mailing list darktable-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-devel
