Today, we were taught how to make use of vanishing points in photos. A vanishing point is basically a point in the picture plane that is the intersection of the projections of a set of parallel lines in space on to the picture plane. Vanishing can actually cause problems if you wish to edit certain parts of the photo. An example of this may be cloning. When you clone an object or subject that is inside the field of the vanishing point, the vanishing point interferes with the process of cloning because the perspective of the cloned object changes into a wrong one. This can be solved with ease. All you have to do is go to filter>vanishing point and you can go ahead and designate planes on the image. To start making the perspective planes, you have to determine first the vanishing point/s in the image. Then, select the 'create plane tool' in the toolbox and click on the starting point of the vanishing point, keep clicking on the remaining points of the perspective plane until it forms a quadrilateral. The color of the plane will guide you with the right proportions and perspective. Repeat process on the other perspective planes (if any). These planes will be a big help later on with cloning and even photo manipulation.
Here is an (unfinished) image I have edited with the help of creating perspective planes. The two photos on both sides, which are supposedly to come off as holographic, were dragged into the image while it was opened in the vanishing point window. The added photos automatically changed form based on the part of the perspective plane where it was being dragged around and placed.
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