Jeff Patton JeffPatton Location: Lexington, USA Language(s):
English Member Since: August 2002 Last Updated: 29 June 2008 Portfolio Views: 484640 Chosen as Favorite: 303
Awesome blog. I like reading it even if I got not much to do with 3d rendering You have a talent for writing about all those complex things in such interesting way. Looking forward to see some "realistic rendering of human portrait" chapter Greetz!!
daveb867: HDR's should be linear (gamma 1.0). So if you have your global bitmap input gamma set to anything other than 1.0 you'll need to use the local gamma settings available when you load your .hdr (or any bitmap). OR you can use the gamma/gain shader (part of the production shaders) to configure gamma locally. Keep in mind that there's no guarantee that the .hdr you download is correctly saved as gamma 1.0! Clear as mud eh?
amitjersy: Practically all lights in 3dsmax are compatible with mental ray. The most accurate light sources are the photometric lights. Just make sure your scene is scaled properly (real world values), or you won't get the full benefit of using photometric lights.
mime1: Thanks. Realistic CG human portraits eh?...I think I'll have to vastly improve my texture painting skills prior to tackling that topic.
Thanks for all your efforts in producing this blog - it is just aweome!
I have a small query regarding the colour bleeding / final gather scene (31st Jan 2008 blog)
How did you get the wood floor so richly coloured? When I render the scene you provided, the timber floor looks washed out. I have tried adjusting the photographic exposure control but
have had no luck.
Short answer: I'd say your gamma settings are different from mine. Unfortunately I can't say "use this gamma setting" because it's totally dependent on your monitor(s) (and preference), and your bitmaps/texture maps....keep in mind that not everything is (or should be) gamma 2.2.
As you can probably tell, gamma in 3ds Max is a rather complex issue and I can't do it justice from a guestbook entry. So for now, if you're not familiar with gamma, do some digging around on the popular forums/Google to find more info.
Hi jeff....congrats for all images...i have a doubt...in your renders with photo in the backgrond...the reflect in car is hdri or the photo ? i like very much your renders....
Hi jeff....congrats for all images...i have a doubt...in your renders with photo in the backgrond...the reflect in car is hdri or the photo ? i like very much your renders....
You have a talent for writing about all those complex things in such interesting way. Looking forward to see some "realistic rendering of human portrait" chapter 
