How is glossy and matt flat surface realized?

Question

3D

Hello. How can you approach the implementation of a glossy and matte surface on a flat object? Everywhere in the articles three-dimensional objects are shown - balloons, teapots, monkeys... We need a flat object like a business card - one is glossy and the other is matte. How do they differ in terms of lighting, what are their features and how is it implemented technically (3D Max, Blender)?
I would appreciate any advice, links, etc. I repeat, it is flat objects such as business cards that are of interest.

Answer 1

In Blender, this is configured with the roughness parameter of the Principled shader.
Keep in mind that when rendering objects, it is very important to have a good HDR environment map so that there are highlights and reflections on objects.
Values ​​from left to right: 0, 0.1, 0.7
If I had not put an environment map here, the sky would not be reflected in the plates and we would not see the degree of haze of the surface. Therefore, it is important to either have a scene around the object or an environment map.