Nothing destroys a photograph more than imperfect focus. It cannot be corrected by software and in a large print the image will look worse: it is still my most common reason for deleting sports or wildlife images. With landscape work, however, a basic understanding of the factors involved, now brings me focusing success nearly every time. If only that applied to all the other factors!
The first thing to understand is that for every setting of the focus dial there is a plane of perfect focus containing all the objects that are the same distance from the lens. Beyond and in front of that plane there is a...
Read this and many more articles in High Definition inside Issue 11 of Landscape Photography Magazine.