PHOTOGRAPHY: LENSES

ZOOM LENS

-enables you to       zoom in or out
-zooming: adjusting focal length
- focal length:
18-135 mm
 

The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters
(e.g., 28 mm, 50 mm, or 100 mm). ...
The shorter the focal length (e.g. 18 mm), the wider the angle of view and the greater the area captured.

© Aybike Baykara 

Wide-angle lens
- wide angle
- short focal length
< 50 mm
- great area, from close by
- objects/persons small

© Nan Goldin

Standard (normal) lens
- 'natural' angle
- standard focal length
= 50 mm
- human observation
- objects/persons from
natural point of view

Telephoto lens
- small angle
- long focal length
> 50 mm
- small field of view, from distance
- objects/persons large