5 Ways Focal Length Affects Your Subject
1. Field of View
Images courtesy of @hebishojo (via Instagram).
Wide-angle lenses (e.g., 18mm) capture more of the scene than telephoto lenses (e.g., 85mm).
Images courtesy of @ycimaging (via Instagram).
Different perspectives of the same field of view can be captured by altering focal length and distance from the subject.
As a result of perspective, the perceived distance of the background relative to the subject will change. The longer the focal length, the closer the background will appear.
4. Depth of Field
A shallower depth of field (a more narrow field of focus) can be achieved by using a wider aperture or a longer focal length.
5. Geometric Distortion
Barrel distortion is commonly seen in ultra-wide lenses, while pincushion distortion can be seen in longer lenses. In both cases, straight lines become curved.
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