On Sun, Jul 26, 2009 at 04:55:47PM -0400, Bruce Walker scripsit:
> Graydon wrote:
>> Pentax seems to have decided that there's no reason to go faster than
>> ƒ2.8 on digital.  The only exception I can think of is the DA* 55/ƒ1.4,
>> and it's got a sort of vast penumbra of expectation attached if it's to
>> serve as the APS-C 85/1.4.  (Oh, wait, DA 70/2.4 Ltd.)
>>
>> I'd like to see some much faster medium -- 100 to 150 mm -- teles; at
>> the 77mm filter size, they ought to be able to do a 100/1.4, a 135/1.8
>> (just squeaking, but that's the size listed for the A* 138/1.8), or a
>> 150/2; a DA* 150/2 Macro would be especially welcome.
>
> Oh man!  I'd be willing to walk barefoot across crushed glass (SMC or  
> otherwise) to get a DA*135/1.8.

I don't think I'd go quite as far as crushed glass, but I'd certainly be
willing to pay DA* prices for them. :)

> I think Pentax has just decided that *most* people would prefer glass
> they can hand-hold (or monopod) *most* of the time. 

This does fit with the shake-reduction-is-a-tripod-replacement marketing
story, and it's not like carrying a worthwhile tripod fills anybody's
soul with joy in the first place.

> Such lenses balance  nicely with smaller lighter bodies like the K-7.
> The DA*50-135 mounted  on a K20D is just at the limit of what I can
> tolerate hand-holding for  an hour or so.  Though I imagine that a
> DA*135/1.8 would actually weigh  less than that.

I would hope!

The A* 138/1.8 is listed as 865 g; the DA* 50-135 at 765g.  So I think
it's reasonable to expect that a DA* 135/1.8 could be done for no
heavier than the 50-135.

-- Graydon

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