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Old Sep 15, 2003, 3:57 AM   #1
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Default C750UZ - f-stops

I am new in the areana of digicams.

I am bit puzzled over f-stops in digicams. Is f8 on a digital camera equal to f8 on 35mm camera?

If not, is there a conversion factor?

Thank you and look forward to your advice.
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Old Sep 15, 2003, 5:32 AM   #2
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I don't know if it is the same physical aperature size, I believe it varies dependant on the focal length of the lens but I am not sure. However, I read somewhere that digital cameras rarely go over f8 or f10 because of some type of distortion as a result of the light being projected onto a smaller area (CCD sensor being smaller than a 35mm slide) -- I do not know very much about this but if interested I could try to dig up that link again.

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Old Sep 17, 2003, 4:42 PM   #3
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F stops are a ratio of the lens opening to the frame size (at least that's the way I remember it). Due to the CCD being much smaller than a frame of 35mm film, the opening will also be smaller...actually, my SLR's smallest opening (f22) is about the same diameter of the C-700's largest opening (f2.8); due to the much smaller opening of the digital camera, it can't go much smaller than f8...otherwise the opening would be microscopic.
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