1) Focus your camera
In order to ensure your images are sharp, make sure you know how to focus your camera. Digital cameras with auto focus are often difficult to focus precisely, especially when shooting small objects. Make sure your read your owner’s manual and understand how your camera’s auto focus operates. Most digital cameras are designed to easily focus on large objects but have difficulty on small objects. It is often useful to put your camera in spot focus mode. Spot focus will give you more control over what part of a scene the camera is actually focusing on.
2) Use a tripod
Even the slightest movement while taking a picture will cause motion blur. The closer you get to an object the more obvious the motion blur becomes. Using an inexpensive tripod will make a big difference in the sharpness of your images. For really sharp images it makes sense to invest in a good, sturdy tripod. If your camera has a remote shutter release then use it, if not then use the camera’s built-in timer to minimize camera shake.
3) Put your camera in aperture priority mode