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View Full Version : Compositing tutorials anyone?



Carbon71
09-25-2003, 03:23 PM
Hi!
I'm hoping to cut down on some serious render times by compositing in photoshop (for stills). I'm experienced in PS but have never done compositing.

Can anyone point me to some Tuts?

I'm hoping to do things like render out separate reflection, specular, radiosity (especially) and composite them in photoshop.

I'd love any other advice or experience in this?

Thanks,
Carbon

munky
09-25-2003, 04:51 PM
Hello Carbon,

you should check out the .psd exporter in lightwave as it renders out lots of seperate channels such as Raw/diffuse shading/shadow/reflection and some others which you just load into photoshop as a layered document. You'll have to rearrange the layer order but you should search this forum for a link to a tutorial on cgtalk which is all about it. It doesn't cover radiosity but it does give you heaps of control over the look of your render also it exports .psd sequences so you can do the same thing with animations, AFX 6 and combustion 2 import layered psd sequences.

hope this is of use

regards

paul

Carbon71
09-26-2003, 08:29 AM
Thanks. Found this one here:

http://vbulletin.newtek.com/showthread.php?s=&postid=69285#post69285

great, but I'd love a Tut on more complex compositing. That stuff was pretty basic (thought great teacher. Like him a lot). That one basically told me that the raw color layer has to be in multiply mode in PS. I need more than that.

Any advise anyone?

webnel
09-26-2003, 08:33 AM
The psd exporter is one of the methods I know of. You also can render per one (or more) light at a time and save as psd - then put them together later. Once you have all the layers stacked in PS change them from Normal to Screen mode and then change the Opacity of each layer as needed. Radiosity will work this way too.

munky
09-26-2003, 10:03 AM
this might be of use



http://cedar.he.net/~jackal/lightwave/multipass/index.htm


regards

paul

Carbon71
09-26-2003, 12:01 PM
Thanks Guys,

That Tut in the link is great! Webnel check out the tut if you get a chance. He uses multiply on the radiosity pass. How is your screen method with radiosity different?

webnel
09-26-2003, 12:53 PM
Yes, I just filed that Tut. Really I haven't done much post for the radiosity yet. I'd use whatever mode produces the best results, though.

munky
09-26-2003, 01:51 PM
but oh ooooh wait hold it there's more!


http://www.g-3d.com/Newer_AAC_3d_advanced.html

http://members.shaw.ca/lightwavetutorials/camera.htm



might be worth a look as well


regards

paul