If you want your photo to be as sharp as possible then you are going to need to learn some good information about how to use the aperture settings in your camera. Improper use of this in your camera can make for photos that are not as great as they possibly can be.
There are many different measurements in photography. The measurements are measurements mostly of light and the amount of time that the photo is exposed. The aperture is something that you really should try to understand. The aperture what controls the amount of light that is let into the camera.
In photography, light is critically important and controlling it correctly will make your photos much better. The aperture is measured in F-stops. There are different values of aperture that can be large and small. A larger aperture will let more light into the camera for exposure. Because more light is let in you can expose the image faster and then use a faster shutter speed. This can really be useful when you are taking pictures of fast movement and need a fast shutter speed. Also, using a fast shutter speed will ensure you do not get the camera shake effect from your hands.
Another great tool that you can do with using a large F-Stop in your aperture is that it can make your image sharper. What the larger aperture will do is make the depth of field be much smaller. This will make whatever is out of the small depth of field be out of focus. This can make the background be very out of focus and the depth of field area will be in focus. Even if you have the object in focus slightly out of focus, since it is the only area of the image that is in focus it'll look much more focused. Of course, you always want to make sure your photo is as focused as possible.
Using a smaller f-stop for your aperture will require the opposite of what the larger aperture does. Because the smaller aperture will make less light to expose the image, it will make you need to use a slower shutter speed to expose more light. What happens with a smaller opening as an aperture is that the light that is let in will be much more directed and then will make for much sharper images everywhere. A small aperture can make for very sharp images through the entire z axis. This will make the background in focus and the foreground in focus. This is great when taking landscape photos or photos of large fields like football fields where you want the entire picture in focus.