A vs S

These photograph's show how with different aperture settings (f-stop's) and different points of focus, different shots can be produced. The f-stop number or aperture relates to how open the camera's aperture is set too. The higher the f-stop number the smaller the aperture will be in the camera and vice versa. With an open aperture (small f-stop) the depth of field becomes 'shallow' and as seen in the above photo and those below the point of focus remains sharp but detail front and back of the focus becomes blurry. Higher f-stops (smaller aperture) 'deepens' the depth of field and more detail within the frame becomes sharp. Sports photographers use wide apertures (small f-stops) and fast shutter speeds to achieve crisp in-focus shots. Wide apertures also help in low light situations as more light is being allowed into the camera.