Archived posting to the Leica Users Group, 2004/05/19

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Subject: PS RE: converging parallels (was: [Leica] 50mm lenses should be compulsory.)
From: mark at (Mark Rabiner)
Date: Wed May 19 20:42:31 2004

On 5/19/04 8:52 AM, "Douglas Herr" <> wrote:

> Douglas Herr <> wrote:
>> Jeffery Smith <> wrote:
>>> Yikes, I thought all of the perspective control problems in shooting
>>> buildings could be traced to a wide angle lens causing the roof to be
>>> overly small, giving you a trapezoid effect. Don't wide angles distort
>>> things, causing converging parallels?
>> Converging parallels is what you get when the film plane isn't parallel to
>> the parallel lines.  Has nothing to do
>> with the angle of view - but you _notice_ the convergence more with
>> wide-angle lenses because of the wider
>> field of view.  Try standing in the middle of a straight road - use a long
>> lens, aim the camera so the center line
>> of the road bisects the picture - and see if the edges of the road meet at
>> the horizon.
> Here's an example of converging parallels with a 280mm lens:
Slow moving Buffalo keep to the right!
> Doug Herr
> Birdman of Sacramento
> _______________________________________________
> Leica Users Group.
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Mark Rabiner
Portland Oregon


In reply to: Message from telyt at (Douglas Herr) (PS RE: converging parallels (was: [Leica] 50mm lenses should be compulsory.))