> > From: Kostas Kavoussanakis <[EMAIL PROTECTED]> > Date: 2006/07/19 Wed AM 09:36:45 GMT > To: Pentax-Discuss Mail List <[email protected]> > Subject: Re: SV: 21mm limitted is a jewel ... > > On Wed, 19 Jul 2006, David Savage wrote: > > > At 02:59 PM 19/07/2006, Sylwek wrote: > >> On 18.07.2006, at 21:33 , Mark Roberts wrote: > >> > >>> My other Limiteds (43, 31, 77) are all f/1.9 or faster. That's a lot > >>> more than a third of a stop! F/2.0 and under is Limited territory for > >>> me. I'd *consider* the upcoming 70/2.4 if it were under $500 (and if > >>> I didn't already have the 77!) > >> Yes, but but don't forget DA Limiteds are much cheaper than their > >> faster, FF counterparts. FA 31/1.8 is about two times as expensive as > >> having similar FOV 21/3.2, not to speak that DA is much smaller, > >> lighter and takes 49 mm filters instead of 58 mm... > > > > They're cheaper because they're slower. > > They also cover a smaller image-circle. > > And there may be thousands other differentiations between these > lenses. On spec only you cannot tell why one is cheaper than another. > Take the 24-90 and the latest 28-105 as examples; both 3.75x zooms, at > comparable FLs with comparable apertures, yet the prices are so > different. > > But I stronbly object to Sylwek's (of all people) comparison of the 31 > with the 21 on the grounds that if you mount one on a horse it gives > you the same fart as if you mount the other on a pig or sth.
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