Shooting wide open
Andy says… “The benefit to using a small depth of field is that the background is thrown completely out of focus, which creates the professional look. The longer the lens you use, the smaller your depth of field becomes. When using lenses of 200mm and above wide open, there is a real art to keep the subject sharp. I would recommend practicing your focusing technique when shooting wide open on these lenses.
“Try using this technique for cycling photography, especially when shooting head-on. An example would be when shooting the finish line of a cycling road race. Shoot wide open with your exposure and focus on the winner. The other cyclists behind him will be thrown out of focus, concentrating your eye on the most important part of the image – the winner. The challenge here is the small depth of field, which makes your focusing critical. Make sure you keep the focus point on the winning cyclist’s face or chest.”