CGTalk - lighting question

funkyfoe

12-24-2001, 10:27 AM

hello I was just wondering how you get the (specular)highlights to glow in lw7 ? I`ve seen this in lots of pictures but never understood how you do it. also wondering how you get a bright white highlight on the side of an object (probably a little vague here.

MERRY X-MAS EVERYBODY !!!!!

Bytehawk

12-24-2001, 12:20 PM

it's called bloom and is mostly done in post

I think worley made a plugin that does just that and the brdf shader probably does that too, never tried it myself, I always do it in photoshop/aftereffects.

copy layer, adjust curves to show only highlights, change mode to overlay, adjust opacity to taste

obviously you can tweak till you drop on this effect

before
http://users.skynet.be/bytehawk/cgchann/before.jpg

after (exagerated a little)
http://users.skynet.be/bytehawk/cgchann/after.jpg

CIM

12-24-2001, 08:23 PM

Bloom comes with Gaffer (made by Worley). It is much nicer than Lightwave's own Bloom (Effects>Add Image Filter>Bloom). Also, Corona is similar to Lightwave's Bloom (found under Add Image Filter).

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