The idea behind this photo composition using diminishing perspective is that objects that are further away will look smaller than those that are nearer to it. Basic photography of this method is to look for objects of similar sized or repeated objects in a line.

Look out for queue of people, a line of buses, or even trees by the side of the road. Line them up at angle and view them, you will find that the those that are nearer to you would look bigger while those located further away will look smaller and so forth. Taking a picture at this angle would produced a diminishing perspective in your photo composition giving your image more depth as you create a three dimensional image rather than a face on two dimensional frontal picture.

This photo composition is similar to that of one point perspective in that if you imagine several lines connecting from object to object, you would find the lines converge into an imaginary point, with the vanishing point located perhaps outside of the picture frame.

You could use selective focusing by increasing the aperture size and reduce the depth of field. This effect would be best suited for a digital SLR rather than a point-and-shoot compact camera as the DSLR has better control of the aperture settings. Firstly, pick a subject, perhaps a third of the way in your frame and give it focus before pressing the shutter. By selectively focusing on one of the subject from a row of similar objects you are giving that particular object some emphasis in your photo.

While taking a picture of a row of similar objects receding in diminishing perspective, you may try to look out for an odd ‘fella’ out of the similar objects to break the monotony. For example, a queue of people shot from behind the queue with most people facing the front, watch out for anyone that may happen to look out from the queue, and take a shot to break the monotony and give some extra interest to your photo composition.

When taking picture in diminishing perspective, it is always good to have the objects overlap each other than have those standing apart. The overall impression of depth is greater when an object is partially obscuring another in a picture. However do watch out that the overlapping is not too much as the sense of depth would again be lost again.