The Camera LensDigital Photography
Lens• Image quality is greatly
affected by the quality of the lens. • Lens types:• fixed lenses (prime lenses)
which have just one focal length• zoom lenses, which allow the
focal length to be varied• https://www.youtube.com/watc
h?v=_8jdmyF6BSo
Types of lenses•Standard
•Wide-angle
•Telephoto
•Zoom
Lens Elements
• Most cameras contain lenses which are comprised of several "lens elements."
Focal Range Lens Ratio Lens Ring Size
Numbers on the Lens
Focal Range• The focal range/length of a lens determines its angle
of view, and how much the subject will be magnified.
• What does the focal length number mean?
The focal length number tells us how much of the scene is captured in the picture. The lower the number, the wider the view, and the more we can see. The higher the number, the narrower the view, and the less we can see.
• Wide angle lenses Telephoto lenses - short focal lengths - longer focal lengths- wider angle of view - narrower angle of view- offers greater magnification
Camera stays still, focal length changes
Focal Length Distances
Lens Ratio
Lens Ring Size