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Re: [OM] lenses

Subject: Re: [OM] lenses
From: *- DORIS FANG -* <sfsttj@xxxxxxxxxxxxxxxxxxx>
Date: Sat, 2 Oct 1999 09:51:02 -0400 (EDT)

On Fri, 1 Oct 1999, Frank Ernens wrote:

> about Joel Richards' question:
> 
> > I have been happily snapping away with my 50mm/1.4 zuiko for a few
> > months now and I think I'd like to pick up a wide angle lens to
> > play around with.  I'm thinking of either 24mm or 28mm f/2.8 zuikos.
> 
> It happens when you tilt the lens. You can hide it by avoiding lines
> which don't go through the  centre of the frame, but a little doesn't
> bother most people. View cameras don't have this problem (see "The Camera",
> by Ansel Adams).

  They do have the "problem" (all lenses do), but you can correct it 
with a view.

> Some of the distortion is an artefact of the lens. The 24/2 supposedly
> has less than the 24/2.8. 28mm primes don't exhibit it. Most zooms are
> pretty bad, even at 35mm. I don't know how Zuikos compare to, say,
> Nikons or Canons.

  I think we're talking about two different things here. One is real lens
distortion (barrel/pincushion/waveform). The other is the
wide-angle perspective effects, which are often referred to as
"distortion". One can easily run into this problem with a 50mm. don't
believe it ? Grab one of your chilluns and pose them in strong light. 
Use fast film. Set your 50mm at f/16-22, using the DOF scale set it
for a max of 3 feet. Now take a portrait of said child from about 
12-18" from the top of his head. Bingo..."wide-angle" distortion. 
  This is why it is good to acquire a basic understanding of perspective
before launching into wides (or you can learn by blowing hundreds of
important shots).
                                   *= Doris Fang =*


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