Re: Poll on *Really* Wide Angle Lenses

In article <1123540388.747852.150750@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
BC <brianc1959@xxxxxxx> wrote:
>
>Chris Brown wrote:
>> Try comparing to what you'd see with your *own* eye. When you look at that
>> same brick wall, the bricks directly in front of you appear bigger than the
>> bricks further away, or if you prefer, the lines of motar between them
>> converge towards the vanishing point. This is just a restatement of the
>> one of the first things everyone knows about vision - that objects look
>> smaller the further away they are.
>>
>
>That's not how perspective and vanishing points work. If you look
>straight at a brick wall then the upper and lower vanishing points are
>both at infinity. Its only when you look on the brick plane at an
>inclined angle (non perpendicular) that you can begin to see vanishing
>points and the more distant bricks start to appear smaller.

You are quite simply wrong here. Objects look smaller the further away they
get - it doesn't matter what angle you look at them at. You can see this
yourself - find something that nicely demonstrates vanishing point
perspective, such as powerlines heading off to the distance, or a long
straight road. Look straight at it and observe how things look smaller the
further away they are.

Now turn through 90 degrees, so that you are perpendicular to the scene.
Continue to lok straight ahead, but observe your pervious subject using your
peripheral vision. Notice how things still look smaller the further away
they are.

Or, if you are looking at cows in a field, the one that's 300 metres away is
never going to look the same size as the one that's 3 metres away,
regardless of the viewing angle you use to look at them.
.

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