This exercise showed me by simply changing from one focal length to another, how the view is altered considerably.
For this, i had to set my camera on a tripod and focus on a subject in the distance, and then take a image at various lengths along the focal range of my lens.
The images below show how the larger the focal length, the more the angle of view closes in,in other words, the longer the focal length the closer the subject appears and less of the image is seen.
Focal range set at 28mm
Focal range set at 50mm
Focal range set at 70mm
Focal range set at 105mm
Focal range set at 135mm
As you can see, the larger the focal range the closer the image appears but also how angle of view closes in.
Notes
Another good exercise, this one i found helped me to get a better understanding of how focal range and the angle of view work together, A simple exercise but also informative.
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