Fur. It's hard to model in CGI. For a start, it's not one object but hundreds or thousands or millions of them. To make them convincing you have to model them; understanding how they move relative to each other, and to the animal or human that they're attached to
In Part 1 of this 3 part series about applying for Jobs in the VFX Industry, RedShark's reporter HaZ, uses his experience as a VFX Supervisor and Producer to explain what he looks for in the in an application: what really works to get his attention - and what turns him off
Have a close look at this video clip. It’s an advert for a high-end kitchen worktop manufacturer. Watch it in 720p, and look as closely as you can at the camerawork, the clever use of depth of field, the lighting, and particularly the fresh fruit.
And then reflect on the fact that no cameras - or indeed fruit - were involved in the making of this at all.
It's really, really hard to create a GGI human face that's convincing. If you know this, then you also know the reason why so many blockbuster movies (Antz, Bug's life, Cars, WALL•E etc) have been about things and not humans