Animators use "2.5D" animation techniques to make flat images appear 3D and even mix 2D and 3D elements in the same film. There has been a lot of innovation in the 2.5D space with movies like Sony's ...
This is when a variety of techniques are used to make an otherwise flat 2D film feel 3D, with depth, but also with a unique hand-drawn style. Animators might use illustration tricks like shading, ...