I've heard that said before, but what kind of tolerances are we talking 
about?  I would think that's it's not as expensive as it may seem, but is 
used as a value-added feature to raise the price on the high-end bodies.

Not arguing with you, but it just seems to me that everthing has to be 
manufactured to pretty close tolerances already. A slop of 1 - 5% in other 
body parts would mean the thing wouldn't fit together.

It just seems counter-intuitive to me.  The reaosn for looking throught the 
viewfinder is to see the scene one will capture. In a perfect world it would 
be nothing more/nothing less.

Tom C.

>From: Godfrey DiGiorgi <[EMAIL PROTECTED]>
>Reply-To: Pentax-Discuss Mail List <[email protected]>
>To: Pentax-Discuss Mail List <[email protected]>
>Subject: Re: New 12MP APS-C CMOS sensor from Sony
>Date: Tue, 21 Aug 2007 10:42:56 -0700
>
>The primary reason for less than 100% viewfinder coverage with SLR
>reflex optical systems is cost of manufacture and the resulting price
>to the users. Optical systems built to this standard require larger,
>heavier components with more rejects and more accuracy in assembly by
>a multiplicative factor to ensure accurate registration, high quality
>viewing, etc. Quality control alone is probably twice as expensive.
>
>Top of the line, pro SLRs have often had 100% viewfinder coverage
>(Nikon F series, Canon EOS 1 and F1 series, Contax RTS series, etc)
>but at a hefty premium price that the vast majority of users would
>not accept. I see from Boz' site that the Pentax LX had ~98% coverage.
>
>It's very easy and inexpensive to produce a 100% viewfinder coverage
>with a digital sensor and an LCD  screen, presuming that the digital
>sensor is capable of real time capture. It doesn't cost any more than
>producing a viewfinder with less framing coverage.
>
>G
>
>On Aug 21, 2007, at 9:59 AM, Tom C wrote:
>
> > IMO, not having 100% coverage in a viewfinder is a far more serious
> > issue
> > than it being a little dim for one's tastes.  Of course we've all
> > gotten
> > used to it, but I fail to see why, all things considered, that
> > viewfinders
> > don't approach a view that is within 1% of what is imaged on the
> > recording
> > medium.
>
>
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