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HDRI causing stroke on render.
HDRI is causing a stroke / highlight on object when rendered to alpha channel. Have used standard and arch & design materials with no highlight / gloss / specular. The stroke only appears on the brightest parts of the HDRI.
read 409 times
4/28/2015 1:46:48 AM (last edit: 4/28/2015 1:48:36 AM)
You're referring to this, yes?
read 391 times
4/28/2015 2:34:20 AM (last edit: 4/28/2015 2:34:20 AM)
Yes, after some digging it is called "alpha halo"?
read 388 times
4/28/2015 2:50:52 AM (last edit: 4/28/2015 2:50:52 AM)
Ahhhh, I thought you were referring to the different coloring of that one "bar" of the structure.
Yes, that halo effect is what you get when you use an environmental background that isn't black and you don't properly un-multiple an alpha from it's RGB.
Easiest solution, switch to black. Unless you're compositing on white.
Then render on white.
If you're compositing on color? Un-mult.
read 385 times
4/28/2015 2:55:04 AM (last edit: 4/28/2015 2:55:04 AM)
Can you point me to a site or what to research. I am a noob on this. Thanks.
read 383 times
4/28/2015 2:57:21 AM (last edit: 4/28/2015 2:57:21 AM)
Essentially it's a baked in clipping of the area around an object based on the background that it's rendered against.
If you're trying to get rid of it; there's several ways... This is one of the more proper ways (but you need After Effects for it), note I've never used this plugin myself:
read 370 times
4/28/2015 6:36:44 AM (last edit: 4/28/2015 6:36:44 AM)
Edit: disregard this
read 369 times
4/28/2015 6:44:26 AM (last edit: 4/28/2015 6:45:49 AM)
If you are using Photoshop the defringe option can help (If you can't go back and do what Bolts suggested).
read 335 times
4/28/2015 6:44:53 PM (last edit: 4/28/2015 6:44:53 PM)
if you have to deal with that in after effects just use a choker, matte choker or simple choker.
read 322 times
4/28/2015 7:56:51 PM (last edit: 4/28/2015 7:56:51 PM)
Isn't choker like a contracted selection?
That's not exactly properly un-multing.
read 303 times
4/29/2015 2:44:16 AM (last edit: 4/29/2015 2:44:16 AM)
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