That is absolutely true, **Think About It**
If one object is at 10 feet and a second object is at 20 feet,
and the first object is rendered the same size in two images,
whether thru cropping, reduction, enlargement or whatever,
then the size relationship (perspective) between the first and
second objects will be the same in both images.
**Regardless of the focal length used in the two shots.**

Try it, take shot with a WA, a Normal, and a Tele.
>From the same distance, of the same objects.
Pick one of the objects (any one) and render it the same size,
in the print or on-screen image, from all three shots.
The size relationship (perspective) will be identical in all three.
An object at 20 feet IS ALWAYS twice as far away as one at 10 feet.
The image will make it look that way.
The same object at 200 feet is only about 5% farther away than one
at 190 feet.
The image will make it look so.
The reason WAs and Teles *distort* perspective is because you are
shooting from *very different distances* to keep an objects image
the same size on film/sensor.
This radically changes the distance relationship (perspective)
between the primary object and the other objects in the frame.

Really, try it, it's true.

Don



> -----Original Message-----
> From: Graywolf [mailto:[EMAIL PROTECTED]
> Sent: Friday, July 15, 2005 5:20 PM
> To: [email protected]
> Subject: Re: Theory of Equivalency
>
>
> Nope, perspective is entirely dependent on subject distance.
>
> If you take a photo with a 35mm lens and from the same point with
> a 350mm lens the perspective is identical. You can prove this by
> taking the two photo croping and enlarging the same area from the
> 35mm as in the 350mm lens photo. They will be identical as to prespective.
>
> graywolf
> http://www.graywolfphoto.com
> "Idiot Proof" <==> "Expert Proof"
> -----------------------------------
>

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