i have a simple cube to experiment with this technic
If you want very fine details you need to subdivide a lot
which means lots of memory and much longer time to render!
2 ) Pictures
F5 you select Image
Then what do you do to put this color image on the cube ?
and what about the Black and gray image in the book
how do you work with this type of image ?
is it possible to put the image on one face of the cube only ?
I’m not entirely sure what it is that you mean, but if you want to know how to use a displacement map, yes you need to have a fair few subdivisions to make displacement noticeable.
To apply the displacement (texture)map on a cube, in the ‘Map input’ click the cube mapping button and in the ‘Map to tab’ click on ‘Disp’ and move the slider below to however much you want the displacement to affect your object.
To put the map on just one face, check out the multiple materials at