[scribus] OT: Interesting Camera/Mega-Pixel Article

Jeffrey Silverman jeffrey.d.silverman at gmail.com
Wed Mar 11 20:37:14 CET 2009

On Wed, Mar 11, 2009 at 3:21 PM, Asif Lodhi <asif.lodhi at gmail.com> wrote:
> Hi Jeffrey,
> On 3/11/09, Jeffrey Silverman <jeffrey.d.silverman at gmail.com> wrote:
>> <snip!> I also suspect many don't understand the difference between optical
>>> and digital zoom.
>> There is a difference?
> Optical zoom: zooming rotating the *physical* knob around the lens.
> Digital zoom: mathematical estimation (interpolation) of the next zoom
> level of image size.
> Correct me if I am wrong, please.
> -Asif

Sorry, that was my EXTREMELY dry humor[1]. I actually know what the
diff is. and yes, you are way wrong: optical zoom is when the lens
diffraction rate is 0.5 times the distance to the optical
interference, resulting in noticeable noise, and digital zoom is when
the lens is circumvented through reverse interpolation of the optical
megapixels. Someone may be interested in expanding on some of the
minor details, but that is a good overview.

[1] as in "Not Actually Funny(TM)" or "Funny Not Included"

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