Nikon D3100 D3100 User's Manual - Page 93

Mode M (Manual) In manual exposure mode, you control both shutter speed and aperture. To take photographs in manual exposure mode: 1 Rotate the mode dial to M. Mode dial 2 Choose aperture and shutter speed. Checking the exposure indicator (see below), adjust shutter speed and aperture. Shutter speed is selected by rotating the command dial: choose from values between 30 s and 1/4,000 s or select "bulb" to hold the shutter open indefinitely for a long time-exposure (0 78). Aperture is selected by pressing the N (E) button and rotating the command dial: choose from values between the minimum and maximum for the lens. Shutter speed and aperture are shown in the viewfinder and information display. Shutter speed Aperture t Command dial N(E) button Command dial 3 Frame a photograph, focus, and shoot. A The Exposure Indicator If a CPU lens is attached and a shutter speed other than "bulb" is selected, the exposure indicator in the viewfinder and information display shows whether the photograph would be under- or over-exposed at current settings (the illustrations below show the display in the viewfinder). If the limits of the exposure metering system are exceeded, the indicator will flash. Optimal exposure Underexposed by 1/3 EV Overexposed by over 2 EV 77