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Old Sep 4, 2007, 9:10 PM   #1
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Hi,

Newbie question here: What is CCD? when looking at digital camera specifications they have numbers like 2.5 inch CCD or 1.7 or 2.7.......what do these mean? what is better (ie. 2.7 better than 2.5?)

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Old Sep 4, 2007, 9:25 PM   #2
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Tiger123 wrote:
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What is CCD?
CCD stands for "charge-coupled device", a type of electronic device used as an image sensor in many digital cameras. (See http://en.wikipedia.org/wiki/Charge-coupled_device )

Tiger123 wrote:
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When looking at digital camera specifications they have numbers like 2.5 inch CCD or 1.7 or 2.7.......what do these mean? what is better (ie. 2.7 better than 2.5?)
In general, a larger image sensor is less prone to noise than a smaller one, but a larger image sensor also requires a more complicated lens design.

And the specifications you refer to are actually 1/1.7" and 1/2.7". A 1/1.7" sensor is actually 1 inchdivided by 1.7, or 0.59 inches, while a 1/2.7" sensor is 1 inch divided by 2.7, or 0.37 inches.



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