||Is it possible to get either the fraction of a HDR pixel or its integer part?|
|Posted: November 2, 2009 11:25 am|
|Posted: November 3, 2009 6:09 am|
Sorry to Hijack the thread, but I still don't quite understand the benefit of all this HDR goodness.
I understand it's theoretically better but can someone demonstrate a filter that would not be possible without HDR colors?
|Posted: November 4, 2009 1:23 am|
|Yes, I'm really wondering about this too. The few things I've tried with HDR seem to be entirely able to be replicated with the right blend modes or maybe a Tone Curve.|
|Posted: November 4, 2009 8:09 am|
There is much bigger room to work in, before we encounter data clipping. In other words whatever you do, you wont lose data. I hope the attached filter shows what I mean.
|Posted: November 4, 2009 12:57 pm|
There are a few less artistic tricks as well, using HDR capability.
Like the reason why I asked about the frac() function: with that, you could "encode" several LDR images in one HDR image, do operations on it, then recover the processed LDR data. It can save you a lot of trouble when otherwise you'd have the same node chain 2-3-4 times just because the data sets driving them are different.
|Posted: November 4, 2009 1:29 pm|
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