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[Rollei] [OT] digital question

This is off-topic, but I'm hoping some of you digi-wizards out there can
help.  I've noticed the newer and cheaper generation of digital cameras
(Nikon 3100, Canon A70) offer 3.2 megapixels but have a sensor array the
same size as their 2.1 MP models (1/2.7"), while the older generation of
3.2 MP models had an array size of 1/1.8".  Obviously, you still have the
same number of pixels to work with, but I'm wondering if there should be
any theoretical or real effect on image quality with the smaller arrays.
I've downloaded some images from the A70 and they look really nice.  To my
eyes they compare favorably with images from the older, larger-array models
like the Nikon 885.

Anyone have any thoughts on this?  TIA...Phil

Phil Swango
307 Aliso Dr. SE
Albuquerque, NM  87108
714-908-7846 (fax)