Let's see - how would that work. In 1890 Paul Rudolph designs the Planar, but he's ahead of his time with a six element lens, and, in 1902 modifies the lens which begets the four element Tessar 6.3, which, over the years is modified and made faster.
Soon we come to the autofocus age, and seemingly the Tessar design goes through some modifications to make it compatible with autofocus, and at times the lens becomes slower, sometimes as slow as 4.5 (which ain't that far from 6.3). Then Nikon, in a brilliant marketing ploy, states that the lens has been modified for manual focus, and makes it a bit faster than the slower, modified-for-autofocus versions. The technical term for this is a circular progression, based on the moebius strip model of marketing. William Robb wrote: > And in the truth is stranger than fiction category, the Nikkor > 45mm clone of the Pentax LTD series is, according to their news > release, "A Tessar design that has been optimized for manual > focus". > I love marketing, especially bad marketing. -- Shel Belinkoff mailto:[EMAIL PROTECTED] http://home.earthlink.net/~belinkoff/ - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
