Hey Bob, Isn't the 55 f1.8 lens that you like a screw mount? If it is available in the K mount, I would consider looking for one of these as well.
--- Bob Rapp <[EMAIL PROTECTED]> wrote: > Hi Fred, > There are some among us that prefer the 55 f1.8. > The tests were > conducted with colour negative film per the PDML > specification. IMHO, I feel > that the tests should have been carried out on > either B&W or colour > transparency film. Only one sample of the 55 f1.8 > was used (I know they are > not common - I have 3). My experience indicates that > they are better than > the K and M 50 f1.4 and 50 f1.7 lenses at the > apertures I use. I do not have > the A f1.4 - it could change my opinion. > > Bob Rapp > ----- Original Message ----- > From: "Fred" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, January 01, 2003 6:53 PM > Subject: Re: A or M 1.7 Vs. 1.4? > > > > > I own the 50mm-A 1.7 lens. Seems that most > think the 1.4 is a > > > better lens? Do you agree? > > > > This has been one of the longest running > "discussions" here on the > > PDML, I think. Some swear by the 50/1.7's, while > others (including > > yours truly) prefer the 50/1.4's. I personally > think that the extra > > half-stop from the 50/1.4's is sometimes useful. > I also personally > > feel that the 50/1.4's are a tad sharper. I think > that the 50/1.4's > > have a better build quality. However, I also > think that the > > 50/1.7's have a slightly flatter field of focus > (making them better > > for use with tubes, macro TC's, mounted reversed, > etc., for macro > > applications). > > > > > Has anyone ever done a side by side comparison? > > > > For resolution, see > http://www.cetussoft.com/pentax/resolutn.htm . > > > > > I would like to pick up a 1.4, and also wonder > if there is much > > > difference between the A version Vs. the M > version. This would be > > > in the K mount, for a Super Program, MX, etc. > > > > There is (I believe) something resembling a > consensus here that > > there is indeed a slight optical difference > between some of the M > > and A 50's, with the 50/2's and the 50/1.4's > showing the biggest > > improvement, and with the 50/1.7's being more > similar, M to A. > > However, I think that the M lenses have slightly > better builds. > > > > I think... > > > > Fred > > > > > __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com
