[robski]

A quick and dirty guide to correcting verticals as requested

I am using Photoshop CS and I think it is the same in PS 7.

I have used Don's image as this is a simple example to start with.

1) Open the file in Photoshop

2) F7 or Window menu select layers option

3) Go to layers window and double click on Background (note this is locked). This will open a new layer dialogue and click on OK. Background has now has become Layer 0. This enables step 5.

4) View menu select new Guide and position a new vertical guide over the area where you want to check and adjust the vertical.

5) Edit menu -> Transform select Perspective option

6) This will provide anchor points around the edge of the image for you to adjust

7) Click on the top right hand point and pull to the right until the image vertical lines up with the guide.

8) Hit return key to make the correction

9) Layer Menu and select Flatten Image option

10) Save as new image

Image 1 shows the layer widow and a vertical Guide added (cyan line).
Image 2 shows 2 vertical Guides and adjusting the perspective tool
Image 3 shows final image.

Use of the rotate, skew and distort tools are very similiar in their action.

I note in Don's image there is a slight barrel distortion maybe we can look at correcting that at a later date.