« on: November 07, 2012, 11:52:22 AM »
No DPP, just lossless TIFF export from LR.So as you suggested I did noise comparison for original RAW and TIFF (lossless converted from RAW, to16 bit TIFF, color space is the same Adobe RGB, no re-sampling - the same pixel count).Quick question. Did you create TIFF image via DPP as opposed by this method?
I removed DPP from my PC long long time back as what I have (LR, DXO Optic Pro and Phase One Capture One) together give me all functionality and quality I need. Use one of them which is better suited for what I want to do at the moment - but with latest LR improvement use other two less and less/
Mathematically any lossless conversion from RAW to TIFF should not change any image metrics – this is why it called lossless. If it changes something then it is not lossless – it either changing something or distort something. Change in noise level only possible if high special frequencies are suppressed – e.g. with down sampling which introduce some image info losses.
I can try to export RAW to TIFF in C1 but 100% sure will have the same result.
So I do not believe that converting RAW to TIFF does any image SNR improvements –just from pure math angle of view.