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In lugnet.space, Todd Lehman writes:
> For example, suppose you have a 10-bit CCD (common), 10x digital zoom,
> and 5x optical zoom. Now if you take a 24-bit color JPEG photo at 10x
> (digital zoom), download it from the camera, load it into Photoshop, convert
> it to a 16-bit image, and resize the image to 50% (half size), that _should_
^^^^^^
Err, I mean a 48-bit image (16 bits per channel)
> contain more detail than if you had just taken the photo at 5x (optical zoom).
> If they look identical, then the camera has a really poor digital zoom.
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Message is in Reply To:
 | | Re: taking good photos
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| (...) I don't think that's quite correct. If your CCD or CMOS chip has greater than 8 bits of depth on each spectral band (most do), then an on-camera digital zoom should contain more information than a post-processed zoom. For example, suppose you (...) (22 years ago, 21-May-03, to lugnet.space, lugnet.publish.photography)
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