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| Tutorial: Straightening a Tilted Horizon in Photoshop® by Brad Petersen
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Introduction
How often do we think we have it right, only to find out that our picture-perfect shot is crooked? More often than not, and unless using a tripod with a level, chances are the image will need to be adjusted for level or vertical accuracy.
This tutorial I prepared for a friend can be used for adjusting the horizon true or by applying this method in a vertical plane, can adjust for verticals that are tilted.
Step 1
With your image open, go to the tool menu and select the eyedropper tool, right-click it to expand the 3 tools there and choose the measure tool as shown below:
Step 2
Using the mouse cursor, make a click on one side of the horizon (or vertical) and while holding the mouse button down, drag a line to the other side of the horizon (or vertical) and release. For accuracy, zooming in (Ctrl +) to ensure proper placement is more effective, and when dragging, the screen will follow along as you move the cursor.
This will draw a line you want correct horizontally or vertically a shown below:
Step 3
View your image full-screen by going up to the toolbar and select View & Fit on Screen (Ctrl 0) and with the line drawn on your image, go to the toolbar and select Image, Rotate Canvas, Arbitrary as shown below:
Step 4
A new popup will now shown in actual degrees, exactly what is needed to correct the horizon (or vertical) as per the line drawn, and in which direction, clockwise (CW) or counter-clockwise (CCW) as shown, and click the OK button:
Step 5
Your image should now have snapped into level, and all that is needed now is to crop to desired size or dimensions and to eliminate the background areas now with no image data in it after the rotation:
You can also customize the rotation if you want creativity and want a tilt in your final image by adding your own number of degrees and direction after step number 4 above.
Careful about cropping so as not to get the blank canvas background in the final image and that often horizons do not look best if dead-center in the image.
(c) Copyright 2006, Brad Petersen & EyeFetch.com. All rights reserved.
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