Hi Steve,
I was referring to the "K" mount 55 f1.8. They were available for the K
series cameras prior to the introduction of the M series cameras and lenses.
Bob
----- Original Message -----
From: "Steve Pearson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 02, 2003 2:10 AM
Subject: Re: A or M 1.7 Vs. 1.4?
> 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
> > >
> > >
> >
>
>
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