I would like to know how to achieve those pictures in which texture shows up well. I am thinking on those portraits of old persons in which the skin looks very wrinkled and, in B&W looks like paper. I am interested in both the manipulations that you can/should do in post-processing and in possible lighting techniques. Thanks

I would like to know how to achieve those pictures in which texture shows up well. I am specifically thinking of portraits of the elderly in which the skin looks very wrinkled and in B&W looks like paper.

I am interested in both the manipulations that you can/should do in post-processing and in possible lighting techniques.