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DPChallenge Forums >> Hardware and Software >> Perspective tool in PS Can someone please...
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Showing posts 1 - 11 of 11, (reverse)
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 07/03/2005 01:28:15 AM · #1
point me to a tutorial or explain how the damn thing works... I got some awesome lighthouse shots that could perhaps use this but I can't figure it out...
 07/03/2005 02:07:33 AM · #2
might try this link:

//www.computer-darkroom.com/tutorials/tutorial_1_1.htm
 07/03/2005 09:16:28 AM · #3
I always use the distortion tool instead, much more control.
 07/03/2005 09:20:47 AM · #4
Originally posted by BobsterLobster:
I always use the distortion tool instead, much more control.


Never seen this one. Is it in PS6 or later?
 07/03/2005 09:25:35 AM · #5
I think it's in all those...
select all, then
Edit -> Transform -> Distort

Now you can click and drag each corner independently to correct converging verticals.
 07/03/2005 09:28:50 AM · #6
I'll have to try that one out later! Thanks Bobster
 07/03/2005 09:29:54 AM · #7
Can anyone post examples of before and after shots that they've fixed using one of these two methods and the distortion that may have resulted?
 07/03/2005 09:52:16 AM · #8
When you use the perspective tool, use your rectangular marquis to select the entire image, then follow Bobster's instructions (edit>>transform>>perspective) and drag the corner on the top (either side that is closest to the thing you're trying to straighten) to the point where the image looks vertical to your eye. You can also choose Skew instead of Perspective and see if it does the job for you as well.

Here's an example...I shot the first one, then a workshop was done on the shot by none other than BradP who told me how to straighten out the verticals. Hope that helps!!

Original
Perspective Shift
 07/03/2005 10:46:46 AM · #9
This is way cool. I quickly grabbed a shot that exhibits converging lines (don't look at the drops on the lens--heavy fog that morning!)

Here's the original


Using Perspective tool:


Using Distortion tool:


Thanks Bobster!!! I'm a new fan of the Distortion tool. Really does give more control.
07/03/2005 11:09:19 AM · #10
I use PSElements 3.0 Image: Transform: Perspective and/or distortion after making any necessary rotation adjustments. I find it is often better to start straight vertical or horizantal before making the perspective/distortion adjustments. Frequently further adjustments for barrel roll or pin cushion might be necessary to straighten convex or concave lines...I use PSP8 for them. Here are two examples:



07/03/2005 12:16:31 PM · #11
I agree that the distortion control offers way more flexibility than the perspective control, which tends to work well only on images that are symmetrically distorted.

But here's another tip: on images that are radically converging, total "correction" leaves a very unnatural looking result many times. On these shots, often the best approach is correct the covergence so it is symmetrical, but to leave a fair amount of convergence in the image. A lot of the time the problem is not convergence per se but the fact that one side is nearly vertical and the other is leaning dramatically; a combination of rotate and distortion control will often produce a more balanced, aesthetic condition of convergence.

Robt.
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