From my later reply afer checking the edges with a straightedge on the
screen I think the distortion is in my brain.
Chuck Norcutt
On 7/15/2012 5:00 PM, Peter Klein wrote:
> Thanks, everyone. Jeff and Chuck: This picture was a grab shot. We were
> cleaning out my late mother-in-laws apartment. I noticed the light on
> the building and the couple on the roof. I ran out on the balcony, set
> the 14-45 Panny kit zoom to maximum, and took a few shots. This one was
> the best.
>
> I was on a fifth floor balcony. The target building is obviously higher
> and a bit to the right of the camera position. So the camera was tilted
> up a bit. Since I've read many times that the most important thing with
> buildings is to get the vertical lines straight, I used the "tilt"
> correction to get a central line in the building straight. I used
> Capture One 6's Keystone correction tool to straighten the edges of the
> building. Each adjustment affected the others and there is some
> pincushion distortion. So the lines were never t perfectly straight no
> matter what I did. I experimented with straightening the rooftop, but
> then the whole picture looked flat. So let the perspective recede, as it
> seemed to want to do.
>
> If I was Andreas Feininger, I'd have used a view camera with swings and
> tilts. But then the couple wouldn't have been there by the time I set it
> up :-) To me, the most important thing was the moment of the couple
> facing each other on the rooftop on a gorgeously-lit building, with the
> city surrounding them.
>
> The sky was much brighter the building. So I developed two TIFs from the
> RAW image, one "exposed" for each, and combined them with a mask. The
> B&W also employs a digital orange filter.
>
> Anyway, if someone has a better idea on how to deal with the perspective
> and distortion, do tell.
>
> --Peter
>
>
> > Interesting how quick associations affect how a picture is seen. When I
> > first saw it I thought the left side of the building was (the part
> with the
> > balconies opening to the left) was actually wider at the top. Looking
> more
> > carefully the black border prevented me from seeing that the right
> edge of
> > the building was also shifted to the left at the top. I think the
> picture
> > is just slightly rotated counter clockwise from vertical.
> >
> > My wide angle lenses have barrel distortion. I don't think at first
> > glance I would interpret any but the most obvious pin cushion
> distortion as
> > pin cushion distortion.
> >
> > Jeff
> >
> > On Sun, Jul 15, 2012 at 8:19 AM, Chuck Norcutt <
> > chucknorcutt [at] chucknorcutt.com> wrote:
> >
> > > Yes, I think the color version makes it easier to spot the people.
> > >
> > > I thought at first that the camera had been pointed slightly down
> giving
> > > some perspective distortion but I then realized that I was probably
> > > looking at some pincushion distortion.
> > >
> > > Chuck Norcutt
> > >
> > >
> > > On 7/15/2012 4:45 AM, Chris Barker wrote:
> > > > I like the idea of the title, Peter, and the colour one is my
> favoured
> > > version.
> > > >
> > > > Chris
> > > >
> > > > On 15 Jul 2012, at 08:51, Peter Klein wrote:
> > > >
> > > >> Best viewed full screen:
> > > >>
> > > >>
> > > >> I made a B&W version, too.
> > > >>
>
--
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