Sheba:
you said:
Well, wait a minute -- if I hire someone to render one of my sculptures using a model that I provide confidentially under NDA, you're saying that they then have full rights in the rendering and can sell it freely without my permission or acknowledgment?
The words 'without express written consent' come to mind.
Let's take an example: If I shoot a pic of the St.Louis Arch, ....who do you think owns the copyright of that image ? ...the architect of that arch or me ?
First off, .....NDA's don't really apply here. Those are reserved for conceptual, trade secret, etc. ideas. It's not applicable towards the visual arts.
If I create a render of one of your models, and you definitely are the creator of that model, .......unless I signed something otherwise, ........I would definitely be the holder of that copyright and I could do what I please with it, ......sell it, ....make copies, distribute it etc.
Believe me, ....if I see one of your sculptures at an art show, ...I take a pic, .......that's mine. It's copyrighted, I can use it .......but but but , .....I can't use it anyway that's a misleading or false representation of the work, e.g., to let people think I created it. Even with this violation, ..it would still be a tough court battle to win.
Back to the idea of me making a render or taking a pic of your work: That work a new 'work'. I own it, ....you might own the copyright of the model and that would be the 3D data of that model, but not likeness, facsimile or image of that model ----unless your were the actual creator of that image. ......but you hired me ! ........so it's mine.
There is no difference between this and the professional photographic world. None.
Think Andy Warhol: Campbell Soupcans, the stupid movie [Space Balls / Star Wars spoof], .......think Weird Al Yankovic, ..think paparazzi. All safely protected under copyright law. They're all profiting off the work of others ..........if they can't stop it, .....how the hell are we going to somehow put an iron clad lock on it? We can't, ....we can only operate within the confines of what is allowable by law.
Artists always get bothered with this, .....because they can't stand the idea that someone could profit from their efforts. First off, .....if someone was actually profiting off my effot, .......the first thing that I'd do would be flattered and then take the necessary precautions to prevent it in the future.