Take a second look at these trick optical illusion pictures.
Always be learning.Some of these look like simple, or not so simple masking techniques. It’s amazing what a well placed layer or mask can do to open up an image. Though provoking images can make an indelible impression on the viewer.
It’s good to think through that, and see if there isn’t some intentional effect you can leave with your product or brand.
Source: 500px » 37 Mind-Bending Photos You Need To See Twice To Understand – 500px