I remember reading a rumor (based on fact??) that Pentax originally designed it to be a f/2.8-4 zoom but that performance was unacceptable at 2.8 at the wide end. I have this lens, and indeed, I find it weaker (but still good) wide than normal or long. Anyway, it sounds plausible.
I *really* like the constant aperture. William in Utah. Gary Murphy wrote: > > On Mon, 28 Jan 2002 23:34:35 EST, [EMAIL PROTECTED] wrote: > > >That's one reason for constant aperture zooms. > > I understnad that. I guess what I was asking did not come across. > > Why did Pentax choose to make a f/4 constant zoom using the diaphragm to maintain >that, rather than > making a f/2.8 - f/4 zoom on this lens. > > Am I making sense? :-) > > Later, > Gary > - > 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 . - 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 .
