mrsparky opened this issue on Apr 03, 2012 ยท 112 posts
bagginsbill posted Sat, 21 April 2012 at 2:58 PM
Fascinating isn't it? I was going to speak about this, but I really don't have time.
What does that say about the HDR image you started with? Can you think of a case where the JPEG version will have to come out differently?
There are actually three important differences you have to think about, and realize that not all matter all the time:
Direct viewing - what do you see when the camera "sees" the sphere
Indirect viewing (reflections) - what do you see when a reflection, particularly a weak one, is showing you the image
Lighting - what impact does dynamic range and precision have on diffuse lighting
I'll give you a hint - on item #3, almost nothing - zip - nada - doesn't make any difference - 8-bits is enough to carry the day, so long as you multiply it so that the peak value for sunny sky areas is way above 1.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)