Olympus-OM
[Top] [All Lists]

Re: [OM] 50mm f1.4 lens and drop at 2.8

Subject: Re: [OM] 50mm f1.4 lens and drop at 2.8
From: Hugh Turnbull <hugh_turnbull@xxxxxxxxx>
Date: Tue, 08 Feb 2000 17:01:52 -0800
Actually, Modern Photography used a lower level of resolution for their
Excellent, VG etc categories for the two widest apertures in their lens
tests and "raised the bar" for the rest. They felt that the standards
should be higher when the lenses were stopped down.

        Hugh Turnbull

Chip Stratton wrote:
> 
> --- "Barry B. Bean" <bbbean@xxxxxxxxxxxxxx> wrote:
> > What happened at f/2.8? Looks like testing error.
> >
> > BB
> >
> > On Mon, 07 Feb 2000 20:11:41 -0600, Chip Stratton
> > wrote:
> >
> > >f   Center (l/mm)  Corner(l/mm)
> > >1.4   VG  55        Exc 49
> > >2     VG  62        Exc 55
> > >2.8    G  62        VG  55
> > >4     VG  69        Exc 69
> > >5.6   VG  69        Exc 62
> > >8     VG  69        Exc 62
> > >11    VG  62        Exc 55
> > >16    VG  62        Exc 55
> 
> It has to do with what Modern Photog. calls Good or
> Very Good. Compared to other like lenses at f2.8, the
> Zuiko was only 'good' at the center. So it didn't
> improve enough at that aperture to stay in the Very
> Good zone.
> __________________________________________________
> Do You Yahoo!?
> Talk to your friends online with Yahoo! Messenger.
> http://im.yahoo.com
> 
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >

< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >


<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz