On Sun, 8 Dec 2002 19:51:57 
Tom Pfeiffer <[EMAIL PROTECTED]> wrote:

> From: "Konstantinos Bibis" <[EMAIL PROTECTED]>
> >
> > So a 36x36mm sensor ?
> >
> 
> Actually, a 30.6 x 30.6mm, the limiting factor being the diagonal measure.
> 
> While this sounds cool to some, I wouldn't want to give up nearly 6mm of
> negative width just to eliminate camera rotation.
> 
> Tom P.

Hi Tom,

Agreed, but to me it's only an issue with very wide angle zooms**.  That was why my 
suggestion was that the camera manufacturers could implement a choice of square or 
rectangular format using either 30.6mm square format, 24mm x 36mm rectangular format 
(2:3) or even some other ratio (like 3:4 - approx 26mm x 34.6mm) as required.   I 
don't see it being a "hardware masking" solution either like the current APS cameras 
use..  I'd say it could be implemented in software *provided* the image sensor covers 
the required areas - which almost points to a *circular* image sensor (or close to 
it).  I don't expect so see this in the near future, and maybe not ever, but it's on 
my wish list.

** Why I think it's only an issue at wide angles:  If you're not using your widest 
lens (or widest lens setting on a zoom), then you always have a choice to go wider.  
Once you're at your widest lens setting, the rectangular format Vs Square format can 
provide addition angle of view (in one direction anyway).  

At longer focal lengths, particularly with zooms, the field of view in not so limited 
as you usually have a wider focal length available - although I will admit that 
choosing a rectangular format will provide a greater number of pixels on the longer 
orientation at any given focal length.  

Regards
Gary




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