Big difference between Raw and TIFF

Bernard28

• 2015年07月15日 16:06

I have noticed a big difference between the display of a RAW (NEF) in C1, and the display of the generated TIFF, in C1 or Picture Window Pro.
I have tried a lot of different combinations of the process parameters : Tiff/Jpeg, 16/8 bits , Zip/No compress , Adobe RGB ICC/Prophoto ICC , Saturation/Perceptual intent, 0.10 %/0.00 % Highlights clipping,....
but the highlights in the tiff are always different (clipped at a lower value it seems) compared to the raw.
Colors are also a bit different.
The display and the histogram of the Tiff are the same in C1 and Picture Window Pro, and I am 100% sure that PWPro handles the ICC profile, 16 bgits, etc.. correctly.
Please have a look at the 2 histograms below :
Tiff generated with : 16 bits, Prophoto ICC, Preceptual intent, 0.00% highlights clipping :

http://C:\Temp\Histo-Raw.jpg[/img]

http://C:\Temp\Histo-Tiff.jpg[/img]

C1 8.3.1 , Windows 7 , Nikon D810

Bernard

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  Bernard28

  • 2015年07月15日 16:08

  Sorry for the missing images, can someone tell me how to ?
  Thanks
  Bernard

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  Dave R

  • 2015年07月15日 17:08

  Both Img and URL buttons need, I think, an internet address, so you need to save those 2 jpegs to your online web space and insert that address, for instance I have picture stored on Zenfolio of which this is the adress of one:
  http://davidrosser.uk/img/s10/v110/p1202539617-4.jpg
  If I now click on the Img button and insert this address between and[/img] the result is
  
  http://davidrosser.uk/img/s10/v110/p1202539617-4.jpg
  
  Hope this helps

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  Bernard28

  • 2015年07月15日 17:34

  OK I think I managed to insert the images now ....thanks to David522
  
  
  I have noticed a big difference between the display of a RAW (NEF) in C1, and the display of the generated TIFF, in C1 or Picture Window Pro.
  I have tried a lot of different combinations of the process parameters : Tiff/Jpeg, 16/8 bits , Zip/No compress , Adobe RGB ICC/Prophoto ICC , Saturation/Perceptual intent, 0.10 %/0.00 % Highlights clipping,....
  but the highlights in the tiff are always different (clipped at a lower value it seems) compared to the raw.
  Colors are also a bit different.
  The display and the histogram of the Tiff are the same in C1 and Picture Window Pro, and I am 100% sure that PWPro handles the ICC profile, 16 bgits, etc.. correctly.
  Please have a look at the 2 histograms below :
  Tiff generated with : 16 bits, Prophoto ICC, Preceptual intent, 0.00% highlights clipping :
  
  http://www.bleverd-photo.net/Panos_divers/Histo-Raw.jpg
  
  http://www.bleverd-photo.net/Panos_divers/Histo-Tiff.jpg
  
  
  C1 8.3.1 , Windows 7 , Nikon D810
  
  Bernard

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  Bernard28

  • 2015年07月17日 09:36

  I am rather new to C1, and I don't understand the difference between the 2 histograms of the same image.
  It looks like there is a shift of the black point, and the highlights are modified.
  
  Could a C1 specialist or Phase One crew give me some explanation on what is going on ?
  Maybe I missed something ?
  Bernard

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  Bernard28

  • 2015年07月20日 10:18

  Anyone willing to assist ?
  Ma description of the problem is maybe not clear enough, but it seems I am not the only one with this kind of problem :
  
  viewtopic.php?f=47&t=18664&p=90677&hilit=shift&sid=9e24ebaa3b02ac1d09277e69fbcdbb2b#p90677
  
  viewtopic.php?f=55&t=18211&p=89766&hilit=shift&sid=9e24ebaa3b02ac1d09277e69fbcdbb2b#p89766
  
  viewtopic.php?f=57&t=18157&p=87709&hilit=shift&sid=9e24ebaa3b02ac1d09277e69fbcdbb2b#p87709

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