Daan B wrote:
I use LR 3.6. I have downloaded high DR 5D3 RAW files from internet that didn\'t show any or very little banding in the shadows when pushed in PP. I have high DR 5D2 files that don\'t show it either after pushing. But I also have seen pushed RAW files from both cameras that do show banding. The 5D2 banding is on two axis, the 5D3 banding only on one axis. So, the 5D3 is already \'better\' than the 5D2 in this regard. Wether a RAW file will show banding or not depends on wether a certain threshold is exceeded. I suspect it has to do with the entire DR that needs to be captured. The greater the DR, the deeper the shadows (no detail), the greater the chance for shadow banding.
I wouldn\'t be surprised if Canon found a way to eliminate the banding in ther own software. If anybody would know how to correct it in software, it would be Canon. To bad DPP is not suitable for a professional workflow that contains several hundreds of shots per assignment. But maybe it can be used for some isolated cases that will show banding in other software.
Still not convinced that DPP does the trick though. I see banding in Speedmasters DPP conversion too.
FPN is always there, it doesn\'t matter where or who the RAW file comes from. It is an artifact of image sensor. Of course it only shows in shadows where shot noise falls below read noise level (HDR or severely underexposed images)
Canon do not perform extra NR in their software to artificially remove FPN. That will destroy low frequency detail and turn the photo into a mush. In fact Canon DPP has the ability for a pristine linear conversion with absolutely no NR applied. Many RAW convertors still apply some NR, even when set to 0. I don\'t know about ACR though.
I never said DPP removes FPN, it cannot be removed by the RAW converter, so there is no such thing as \"the trick\". However the lack of color noise and coarse grain (for high ISO) in DPP in comparison with ACR makes it possible to remove the banding with advanced NR after conversion.
Also, several hundred photos per assignment is really nothing, I go trough say 2000-3000 images a day using DPP when I am on assignment, sometimes more, not a problem at all.
May 02, 2012 at 01:54 AM
Previous versions of speedmaster20d's message #10597900 « 5d3 shadows much better than thought? »
