Godfrey and I may do some comparison testing between the K135/2.5 and a contemporary equivalent (F or FA 135/2.8 I think). There's much more to determining the quality of a lens than testing data (MTF, LPMM, etc). Right now I'm looking for a couple of older lenses for the Leica because they have certain optical qualities that are not found in newer glass, but, by the same token, I regret having sold my 43mm Ltd and would like to get a 77mm Ltd as well some day.
Shel > [Original Message] > From: Don Sanderson > Collate all the data you want, fact is if I were to sell all > my SMCP-A lenses right now I would get between 300 and 800 > percent of what I paid for them over the last 3 years. > That shows: 1.) They are sought after by many. 2.) The 'many' > can't have them, I've compared them to their AF brethren and > have chosen to sell the AF versions because, dollar for dollar > some of the older glass just plain kicks butt! > I would say a head to head, hands on comparison is about as > fair a test as you can do wouldn't you? > The market HAS decided, some old glass is great stuff, which > has yet to be 'replaced' in AF versions at an affordable price > point. > > Don > > > -----Original Message----- > > From: Quasi Modo [mailto:[EMAIL PROTECTED] > > Sent: Tuesday, March 29, 2005 8:22 AM > > To: pentax-discuss@pdml.net > > Subject: Re: I'm surprised that this one didn't attract a single bid > > > > > > Let the market decide, Shel. If you want to collect lenses and that > > floats your boat, by all means do. But the only delusions are indeed > > yours if you think a) they're consistently and noticably superior > > optically to their younger AF siblings and b) they're worthy > > investments. By all means collate the relevant data as you see it, > > talk to someone who actually designs lenses for a living, preferably > > with the company concerned, learn the history and find yourself > > completely debunked as I did. > > > > Anyway we're here to learn not impose idiosyncratic mindsets but if it > > were larger items such as older cars the (de)merits of collection > > become immediately apparent.