FUTURESPHERE PHOTOGRAPHY   Sample content. (1) THE CAMERA - Depth-of-field and Shutter Speed Your lens focuses in a horizontal line, or field, away from you, to include your subject and beyond. Changing your lenses aperture will determine how much of this 'field' will be in, or out of focus. Left: Lens aperture 'wide open, 5.6' Right: Lens aperture 'closed. 22' The aperture is like your eye, in that the more you squint (closed), the more will be in focus. In general, the smaller the aperture number like 5.6, the shallower will be your field of focus. The larger the number, the greater your field of focus. Depth-of-field and your shutter speed work hand in hand. Change one and it will affect the other. With automatic cameras, this is all done for you. Part of the art of photography is being able to manipulate or make use of this yourself. SHUTTER SPEED Imagine being on this flight deck with your eyes closed all the time. Every now and then you opened them for just a fraction of a second, then closed them again. What you would see in that moment (exposure) is the same as what your cameras card, or film will see. The longer you had them open for, the more the planes propeller would be blurred. The top exposure was 2000th of a second, which is why it is frozen. The lower frame was at an eighth of a second, enough time for the prop to appear blurred. Therefore the shutter speed is the interval of time it takes to expose your card or film. Try this yourself with a moving object. You will find that the object will be frozen the faster you blink.