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Sup /3/, blendlet here, want to hear from Industry Professionals™.

What is the process used to match the edges of shadows when compositing onto a plate? Even if I match the angle and intensity of the lights reasonably well, there's no chance of perfectly matching the penumbra, meaning there's always at least a slight fringe when objects enter/exit a shadow.
I know on a big production you'd probably scan the environment and capture an HDRI on the spot, but I kind of doubt that even this would be able to represent shadows with full accuracy.
I could mask the object and blur its contribution, but I'm interested if there's a proper, universal, non-hacky way.
>want to hear from Industry Professionals™.
Not to be found here
Users of Industry Standard Software™ will do too.
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Pic source btw.
try scaling up window frame
There's still going to be a fringe.
I guess the question is a more general "how do I combine CG shadows with shadows on the footage?".
I have found this breakdown: https://www.creativebloq.com/3d/how-seamlessly-integrate-cg-and-live-action-51411697
The guy goes over a bunch of stuff, but never about the shadows. What would be the process if in that guy's case the sun was to the right instead of in front?
Though he does mention the geometry fringe and the solution is "just blur it lol", so eh.
try this one
Come on mate, I know how to do that.
I'd make a second bg where you clone the color of the big wallshadow to fill the space where right now you have sunlight. Then use the shadow of the ring as a mask for that bg.
That makes sense for a static shot. But you're not gonna paint over every frame for a moving camera.
Really, I'm just trying to understand if "proper" VFX is just hacks upon hacks, or if there is at least a semi-automatic "luma-key this, blur here, blend over that" solution. Preferrably one that isn't object- or surface-specific and applicable across entire chunks of footage.
why not just create the environment from scratch, less headache
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That is the first step, yes. The point is combining with a video or a photo though.
here this dude is using masking, rotoscoping and tones of other shit to eliminate double shadows and whatnot, he is using nuke
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Yeah, that sort of works. This is the kind of thing I was looking for, thanks.

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