<p>the camera lens acts the same way the eye does the higher the f stop the greater the the sharpness on the depth of scale .the lower the f stop the the focal point wil be sharp and every thing else blurry before and after the focal point . You can't achieve these affects if you use the automatic settings on a digital camera. You will have to use the aperture priority settings so you can use a higher f stop which may make the camera need a slower shutter speed .Which may requier you to use a tripod ,so the camera doesn't move during the exposure.</p>