Digital Camera Zoom
Understanding Digital Camera Zoom Lenses
Executive Summary about Digital Camera Zoom by Michael Huddleston
ultra zoom digital camera
There are two types of zooms used with digital cameras: optical and digital.
Using an optical zoom maintains picture quality.
Zoom Ranges and 35mm Equivalents
Optical zoom lenses usually have a specification called “equivalent in 35mm.” This tells you the zoom range of the digital camera compared to a 35mm film camera. Typical 35mm equivalent zoom ranges you will see listed are 35mm-70mm or 35mm-105mm.
28mm…………….wide angle
35mm…………….slight wide angle
50mm……………normal perspective
70mm……………slight telephoto
105mm………….moderate telephoto
135mm………….strong telephoto
200mm+……….extreme telephoto So, a 35mm-105mm equivalent zoom lens changes from a slight wide angle to a moderate telephoto. A 35mm-105mm equivalent zoom is adequate for most users. A 28mm-105mm would be approximately a 4x zoom, and a 35mm-350mm would be a 10x zoom.
Digital Zoom
A digital zoom does not change, magnification.
Digital and Optical Camera Zoom – What’s the Difference?
Executive Summary about Digital Camera Zoom by Alex Don
Most mid-priced digital cameras have an incorporated 3x/4x lens. These numbers refer to optical and digital zoom. Anyway, in digital cameras here are two types of zoom, an optical and a digital one. Optical zoom is the one similar to the zoom of a traditional camera.
Digital zoom, on the other hand, simulates zooming by blowing up a selected part of the picture. The quality of a digital camera is more dependent on optical zoom. At most it can refer to the fact that a camera has both types of zoom functions, digital and optical. Traditional cameras like 35 mm or APS only had optical zoom. Professionals associate digital zoom with digital video cameras. People sometimes compare optical zoom to resolution when they purchase a digital camera.
You may want to check out my other guide on Digital Cameras Online or Buy Digital Cameras
