Yes, you have to use free transform, it can make independent
adjustment on either side, with Photoshop it is as easy as 123 and it
can be very accurate, just send the file to me and I can correct one
in less than 5 minutes.
C.H.Ling
www.accura.com.hk
Scott Gomez wrote:
>
> Bob,
>
> This seems to work. Whether there are practical limits I haven't yet
> discovered, I'm not sure. I've just started playing with perspective
> correction in Photoshop this past weekend (after it was mentioned on the
> list recently), choosing some fresh scans of older negatives that had
> notable distortion.
>
> The primary problem I see with it so far is that there's no easy means by
> which to make a true vertical reference. As a result one is "eyeballing" the
> picture for how much adjustment is required to correct, making this a
> decidedly cut-and-fit operation.
>
> The other problem that seems to come into play is that the adjustment is
> mirror symmetric around the vertical or horizontal centerline of the image
> and I've not yet found a way to change that. Sometimes the distortion isn't
> as cooperative as that.
>
> It may be possible to use the free-hand transform function of Photoshop
> (instead of the perspective correction function) to do asymmetric
> adjustments, but then it seems you'd have to "eyeball" the adjustment twice.
>
> Hope this helps some. In summary, I don't think that Photoshop is going to
> take the place of a good shift lens where precision results are called for.
>
> ---
> Scott Gomez
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