Straighten Images
How to cure that sloping horizon
The techniques
The sample images for these tutorials are available for download as a zipped folder.
Please note. The images in this tutorial section are for personal non commercial teaching use only. If you are a school or other public educational establishment, you may use them as long as you inform Northlight Images of the use. They may not be used in -any- other way without the express consent of Northlight Images - see our usage and copyright page for more information.
Feedback is always welcome! ---
Northlight Images also provides commercial photography training courses for businesses, including specialist Photography training for Estate Agents and for Product Photography.
Everyone takes pictures on the skew sometimes...
Straightening images
Open the image straighten.jpg
Rotate it by 90 degrees and notice the slightly unnatural slope of the water…
Select the zoom tool (Z) and zoom out to fit the whole image comfortably in the view.
Try 'Straighten and crop' under Rotate in the Image menu– probably not what you wanted. Always be careful when using 'automated' repair and adjustment functions. A better fix is often just as quick.
Go to the History palette
Step back to the rotate action
The history palette is a record of your most recent actions on the image. It allows you to step back and undo things you didn't like or just compare what you have done to what you started with.
Open Rotate|Custom and rotate the image a bit.
(notice how you can use the edge of the dialog box as a ruler).
We are very sensitive to horizontal lines, so the adjustment may be only a fraction of a degree (0.25 degree is quite visible).
You will now have to crop the image to get the edges right.
But you may decide that too much is lost and want to go back and alter the rotation…
It's easy to get a slight tilt when you take pictures - it's also easy to fix
The techniques
The sample images for these tutorials are available for download as a zipped folder.
Please note. The images in this tutorial section are for personal non commercial teaching use only. If you are a school or other public educational establishment, you may use them as long as you inform Northlight Images of the use. They may not be used in -any- other way without the express consent of Northlight Images - see our usage and copyright page for more information.
Feedback is always welcome! ---
Northlight Images also provides commercial photography training courses for businesses, including specialist Photography training for Estate Agents and for Product Photography.
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