For the purpose of creating visualization often you’ll need a bump and specular map. Bump map gives an optical bump effect without changing the shape of the model, for example leather or wood. Specular map causes that the light refracts more naturally for example, take a look how light is refracting on the leather chair, you know what I mean? Generally, you can use almost the same texture as in the bump slot. Creation of that kind of map(I think it is foolish to use the first map without the other one) from selected or created texture it’s really very simple. So now I present you a brief tutorial of creating these two types maps. First part is about bump map, in the second one you can read about process of creating specular maps ; ) Regarding of creating a bump map I will give you three ways , so you can pick out the right one for you, enjoy!
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