Look at the following photos of the model that were taken with various Canon EF lenses ranging from 28mm to 300mm. The size of the model was maintained at the same dimension in all the photos that were shot using the 28mm lens all the way up to the 300mm lens. The obvious differences in these photos are in the background. Notice that there are more view of the background in the photos shot with the 28mm and 50mm lenses compared to the other focal lengths of 70mm and longer. The building in the background are hardly imposing in the 28mm and 50mm photos but are more noticeable as the focal length of the lenses increased. This phenomenon is known as lens' perspective. Both the 28mm and 50mm lenses have shown more background detail because they tend to exaggerate their perspectives. The building was shown to be much further aback in the 28mm lens compared to the 50mm version which is actually the correct distance since its angle of view corresponded with that of the human eye. The photos that were shot at the 70mm, 100mm, 135mm, 200mm and 300mm focal lengths showed a much tighter background and made the building looked closer to the model than it really is because telephoto lenses compressed the perspectives. << Back to Main . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 .