Trick, Photography Book - How to believably blur backgrounds in Photoshop! (Without the funky edges and halo effects! Photoshop tips. - Now YOU Can Create Mind-Blowing Artistic Images With Top Secret Photography Tutorials With Step-By-Step Instructions!
Abhishek Garg Principle - Contrast Too much similarity is boring but without similarity important elements will not exist and an image without contrast is uneventful so the key is to find the balance between similarity and contrast .