Exercise – Focal Lengths and Different Viewpoints

This exercise required that two photos be made of the same tightly framed scene, but in which the physical location from where each photo is moved either forwards or backwards. In addition, in order to maintain the exact same framing of the picture from each point of view, the zooming level of the lens had to be manipulated between wide and narrow fields of view. The idea is to show how perspective can change.


Photo 1 – Furthest position from the subject and narrowest field of view


ISO1000, 105mm, f/5.6, 1/400sec



Photo 2 – Nearest position to the subject and widest point of view


ISO1000, 18mm, f/3.5, 1/640sec


The photos I took were of a table and chairs. The chairs behind the table helped to show by how much the field of view is compressed. The perspective in the first photo appears quite flat. Little sense of depth can be discerned, and it’s not easy to determine just how far behind the table the chairs may be. The second photo gives a very strong sense of perspective. Though the size of the table remains roughly the same between the image, the chairs are now seen in almost their entirely. the lines of convergence produced by the tiles on the floor are now much more acute. This image gives a better sense of the physical properties of the subjects and their placement within the scene.


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