Here’s a quick Photoshop trick that takes the guesswork out of rotating your images.
So, I was on a tour boat. Boats + handheld cameras… not an ideal combination:
We need to straighten things out a bit.
1. Grab the Measure Tool (I).
Draw a line along the image’s horizon, like so:
2. Choose Image > Rotate Canvas > Arbitrary…
The rotation value will already be filled in based on the measure tool — all you need to do is click ok, and your image will be nice and straight!
3. Crop (C) the picture to get rid of the rotated edges and improve the composition a bit.
That’s all there is to it! (Well, this picture still needs color correction, but that’s another tutorial…)