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Old Dec 5, 2003, 6:27 PM   #1
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Default Digital Camera lens question

How does a digital camera with a 6-12x optical lens have the ability to zoom the eqivilant of a SLR lens that is so much larger in size?
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Old Dec 5, 2003, 7:22 PM   #2
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Because of the size of the sensor on these digicams as compared to the larger ones on DSLR's or on film SLR's. So these long zoom lenses can be made smaller since they focus the light on a smaller surface.
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Old Dec 6, 2003, 12:46 AM   #3
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Using the old Olympus C-700 as an example, it's actual focal length is 5.9mm-59mm (35mm equivalent is 38-380mm). 35mm equivalent measurements are used so that there's a common ground to compare digital cameras as they all have different numbers depending on the size of their CCD.

The Olympus C-750 has a slightly larger CCD so the actual focal length is different, 6.3-63mm but it still has the same 38-380mm equivalent as the C-700 has.

For those who haven't joined the rest of the world, 63mm is slightly less than 2 1/2 inches.
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