In article , Eric Stevens
wrote:


the corrections can be done *outside* of the camera, where you can
guess all you want and undo it whenever you make an incorrect guess,
or, let the computer do the calculations *for* you, eliminating the
need to guess.

Have another look at
https://www.dropbox.com/s/dku87csvth...00941.jpg?dl=0

That's the result of technology applied to
https://www.dropbox.com/s/hgfbskbe4c...941-2.jpg?dl=0

that's the result of not doing it correctly.

as i said, just because you don't know how to do it doesn't mean it's
impossible.

tl;dr user error.

^^^this^^^

Of course with a digital camera you can know in advance roughly how
much image is going to be lost in the perspective corrections but you
can never know exactly. You have to estimate the allowance to be made
and sometimes your estimate will be wrong.

that's the fault of the photographer, not the technology.

The need to guess and estimate is the result of a deficiency in the
technology.

nope. it's a deficiency in the operator.

Are you saying that with a different operator the technology would
have worked differently?

the technology isn't the problem.

a different operator, one who understands the technology and knows what
he's doing, wouldn't **** things up.