Focus :
“Cameras today offer a wide range of focus options. Manual, semi-manual and an array of automatic methods. Although it is nice to have variety, more complicated options often confuse new photographers, who expect the camera to always know where and how to focus. Luckily, with digital cameras, you can immediately see if your shot came out well. The problem is that with small preview screens, it is often difficult to tell if something is slightly off-focus. The best strategy is to make sure you understand how focusing works and how to optimize it. Simply put: don’t rely solely on the camera to focus.”
Aperture :
“Another issue with unsharp photos may be your aperture setting, which indirectly controls Depth Of Field (DOF). DOF is essentially how deep the focus is. The camera may be set up to only focus on a shallow depth, rather than the whole landscape and some or all of what you are trying to shoot is out of that range. To fix this, either set your camera to landscape mode, or close the aperture to f8 or more. Keep in mind that that even though you broaden the depth of field by doing this, most lenses may drop in performance with smaller apertures, leading to overall less sharp photos.”
