thighslapper Posted March 21, 2013 Share #1 Posted March 21, 2013 Advertisement (gone after registration) Lots of posters have said 'you can't really judge the images until there is RAW support and profiles' for the various programs that we all use such as Aperture, Capture One, LR4 etc....... .... but on reflection Leica must process their RAW files with something .... and must devise an emebedded profile that looks ok without alteration on SOME raw processor .... otherwise how could they assess and adjust things ????? I assume this is LR4 ...... otherwise they would not recommend it ..... so one has to assume that they will try and get the processed image as good as possible for use with this. As a result, surely, the 'Profiles' for other RAW developers are really just to compensate for their idiosyncracies, rather than the deficiencies of the Leica DNG embedded profile...... Anyway.... the point of all this rambling is that as far as I can see you can only judge the true IQ of the M240 by the embedded camera profile...... and only when Leica have produced the definitive version...... I am currently looking at the same photo in LR4, Capture One and Aperture and they all look different ..... Capture one uses it's own engine and defaults to 'DNG Neutral' and Aperture appears to have some default RAW fine tuning as well...... and the results on both are rather odd..... Images in LR4 look fine ... although Leica auto WB seems much too warm. If you use AutoWB in LR4 the results are usually perfect. Quite how the gnomes of Solms cannot see the difference and put it right escapes me..... The other thing I cannot understand is why all 3 have different colour temperatures and tints for the same photo ...... is this a value read from the exif data, calculated from the sensor output or just a blind guess.....?? So...... what is correct ........ the Leica images are ok and the problem is no-one has profiles in LR4/C1/Aperture to view them properly..... or have Leica not got the white balance algorithms right yet..... ???? Link to post Share on other sites More sharing options...
Advertisement Posted March 21, 2013 Posted March 21, 2013 Hi thighslapper, Take a look here M240 Colour balance and processing....... I'm sure you'll find what you were looking for!
sandymc Posted March 22, 2013 Share #2 Posted March 22, 2013 The other thing I cannot understand is why all 3 have different colour temperatures and tints for the same photo ...... is this a value read from the exif data, calculated from the sensor output or just a blind guess.....?? Color temperature is stored in the DNG as an XY value, in effect an absolute color. However, the translation of raw sensor data to absolute color is via the camera profile. So different profile = different color temperature = different rendering. Put the other way round, to get identical color temperature results from different raw converters requires that they be using the same camera profile/calibration. Which they don't. Sandy Link to post Share on other sites More sharing options...
thighslapper Posted March 22, 2013 Author Share #3 Posted March 22, 2013 As I suspected ....it sounds like the wild west .... with complete anarchy and no standardisation..... No wonder Adobe have had an uphill struggle with even a simple concept as the DNG..... Link to post Share on other sites More sharing options...
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