Jeffrey Silverman wrote: > 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,
? > Someone may be interested in expanding on some of the > minor details, but that is a good overview. Someone may be interested in explaining the first one ? Cheers, J/. -- John Beardmore, MSc EDM (Open), B.A. Chem (Oxon), CMIOSH, AIEMA, MEI Managing Director, T4 Sustainability Limited. http://www.T4sLtd.co.uk/ Energy Audit, Carbon Management, Design Advice, Sustainable Energy Consultancy and Installation, Carbon Trust Standard Registered Assessor Phone: 0845 4561332 Mobile: 07785 563116 Skype: t4sustainability
