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Old Apr 5, 2004, 3:50 PM   #1
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Default why is 3x optical zoom the most common on digital cameras?

Looking at various brands of digital cameras, I have noticed that the lions share of cameras alll have 3x optical zoom..

Can anyone tell me why that is?

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Old Apr 5, 2004, 4:04 PM   #2
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I would guess that it has to do with the cost of the optics. Larger zoom lens require more expensive optics.
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Old Apr 5, 2004, 8:38 PM   #3
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I'm sure the price of the lens is part of it.

Another part is the viewfinder - it is diificult (expensive) to build a viewfinder that works at all well beyond about 100mm (equiv). Parallax is the issue. That is why you see don't see the "tunnel" viewfinders on cameras with long lenses: they all use an LCD (or its close cousin the EVF) or are SLRs (expensive) as a viewfinder. Lots of folks just don't like LCDs or EVFs as viewfinders.

Yet another trade-off.
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