Click photograph for a larger view. To do this from WordPress Reader, you need to first click the title of this post to open a new page.
For this photograph using a handheld Sony Alpha 700 dslr, taking in the foreground wildflower meadow, I neglected to maintain a level horizon.
Leveling the image results in too much cropping of this view from Torr Head, north. The best approach is to level the camera. When using the handheld technique, I found many lenses have guides in the view finder the horizon can be lined up against. This technique is useful for a tripod mount. Later camera models have a feature that displays a level, handy for use with a tripod. For the handheld technique, these cameras provide a viewfinder leveling grid.
The next few days I will explore some solutions to the problem of corrected for a crooked horizon.