Originally Posted by ntenny
And I don't know if anyone is really looking at 3-D printing of optical glass, which seems like a difficult niche but an enormously fun one if it magically appeared!
This is an important point. My post #2 referred to this.
A camera typically includes optics. And as long as 3-D printing of lenses is still a dream, speaking of 3-D printing of cameras is more than far fetched.