Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site uvm-cs.UUCP
Path: utzoo!linus!decvax!dartvax!uvm-gen!uvm-cs!hartley
From: hartley@uvm-cs.UUCP (Stephen J. Hartley)
Newsgroups: net.rec.photo
Subject: Re: dingy colors...bad lens?
Message-ID: <328@uvm-cs.UUCP>
Date: Sun, 4-Nov-84 11:14:02 EST
Article-I.D.: uvm-cs.328
Posted: Sun Nov  4 11:14:02 1984
Date-Received: Tue, 6-Nov-84 08:04:37 EST
Organization: University of Vermont
Lines: 20


  I have a Vivitar 28-80mm f2.8 wide-angle zoom (not the new Series I) and I am
pretty disappointed with it.  My camera is a Pentax ME Super.  First of all,
it is not as crisp and sharp as the 50mm f1.7 that came with the camera.  But
that is to be expected.  Overexposing a tad, say one third f-stop, helps
brighten up the slide (I shoot Kodachrome 64 and 25 exclusively).  The most
frustrating and exasperating thing is the performance of the lens at near-to-
fully wide open.  The corners of the slides are noticably darker that the rest.
A lot of the time this is downright ugly, although there are some situations
where this effect is useful.  I believe this effect comes from the length of the
barrel causing the corners of the lense to block light at wide-open apertures.
  Because of this I will never again buy a wide-angle zoom lens without
thoroughly checking the performance of the lens in all kinds of situations.
This was the first lens I bought for my camera (other than the standard 50mm),
and it was upon the recommendation of a friend who had one.  I bought it through
the mail sight unseen.  Live and learn, I guess.
-- 
"If that's true, then I'm the Pope!"		Stephen J. Hartley
USENET:	decvax!dartvax!uvm-gen!uvm-cs!hartley	The University of Vermont
CSNET:	hartley%uvm@csnet-relay			(802) 656-3330