clumsy ******* wrote:
"dennis@home" wrote:

True, but there are specialist camera lenses that can shift it. Only a few
mm shifting or tilting the lens, but seems to make the difference for
shots of buildings making verticals stand up.
You need one that shifts to correct perspective.

and they tend to be horribly expensive. If you can work with a high
quality input and avoid being too extreme in the change, post
processing is fine. (in extreme cases, say fisheye to "normal"
conversions, you can get purple or green fringing, due to something to
do with chromatic aberrations or whatever. To eliminate that [I can
only talk of PS] you go into saturation and use the eyedropper to
select the colour of the fringe and then desaturate it a fair bit).

Thinks: I wonder if anybody actually wanted to know that?

Oh.. I did a sunset shot and got a red fringe round a statue.

Wife photoshopped it out. And a recalcitrant lamp post too.

Final image was great.