Standard lens configurations include:
- Consumer level (point and shoot) camera: fixed lens.
- Semi-professional level camera: adjustable lens and iris.
- Professional level camera: multiple lenses and interchangeable lenses.
Standard single lenses provided with the digital
camera provide a focal length range taht could be any designated length from
35mm to 65mm with a standard digital camera being equipped with a 50mm lens.
The focal distance of the lens can range from a minimum distance of less than
10" away from the subject to a maximum distance of infinity.
Some cameras are designed with a telephoto lens
as standard equipment enabling the image to be focused and shot in a range from
37mm to over 100mm. Non-digital cameras always provide focal lengths in a range
such as 37mm to 105mm. Digital cameras provide focal length in multiples such
as 3X or 4X. Therefore, a zoom lens on a digital camera may be expressed as
50mm with a 3X zoom. This is equivalent to a non-digital zoom lens with a focal
length of 50mm to 150mm.
If the camera work involves the need to have different
sets of lenses, it will be important to consider a camera with interchangeable
lenses, which may be available, would be telephoto or zoom (i.e., 35mm to 105mm),
wide angle (coverage from 24mm to 60mm), super wide angle, and fish-eye or macro.
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