I'm just learning oil painting and all my works are pretty flat -- I paint mostly thin coats of color. But I've seen oil paintings with gobs of paint rising out of the painting. Sometimes rising more than 1cm.
Is there a description for this type of painting, and is this what all oil painters aim for? Are all famous paintings like this?
With thin coats I can smoothly blend two adjacent colors so they transition smoothly from one color to another. I don't think this can be done with the "3D" technique.
It's called impasto painting.
The reason artist do it is because they like it.
Thanks for taking time to discuss on this topic and I agree with Jay Babina Its called impasto paintings.