John Francis wrote:
> On Tue, Oct 02, 2007 at 08:18:49PM +0200, Boris Liberman wrote:
>> Godfrey, I find it incredibly strange that Pentax produced DA 40 and DA 
>> 70 that cover full frame (presumably, but most probably so) obviously 
>> knowing it and not having advertised it in any way.
> 
> Why?  The lenses work just fine with all camera bodies Pentax currently sell.
> 
> I doubt if they've even been tested on an old film body to see whether they
> vignette, or whether the corner resolution meets whatever criteria Pentax use.
> 
> 

The 40's just an update of the M 40/2.8 anyways. And longer lenses are easier 
to get to cover 35mm anyways, there's no reason to worry about coverage on a 
70mm, even a pancake, unlike on a 21 where you need to consider coverage as 
part of the design even on a larger lens than the 21 Limited.

-Adam


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