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
