Reducing focal lens typically results in a smaller image
circle.  Keeping the image circle in the usable range
makes wide-angle lens designs more expensive and more
prone to aberrations, softness, ...

In other words,  it should be easier/cheaper to design a
24mm lens for say APS than for 35mm.

Apart from everything being smaller,  an *effective*
24mm focal length for APS should be just about as
expensive as a 24mm for 35mm.  Think of everything
being smaller,  scaled down.

When Canon introduced their EFS line of lenses, suddenly
they were able to sell a consumer 17-xx lens for $100
(well sort of,  bundled).

Compacts don't have these reflex mirror issues,  so it
should be even easier to come up with a wide-angle lens
design (perhaps shorten the lens/film plane distance
even more).

> >I think it's a marketing thing, not a technology thing.

It is purely as marketing thing.

Lars
-- 
 .~.   Lars Michael
 /V\   [EMAIL PROTECTED]
/(_)\  http://www.larsmichael.com/
^^ ^^
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