Auto mode shutter-priority (S)
In this mode, the camera allows you to set the shutter speed manually, and then automatically selects the aperture value for optimal exposure. A short excerpt should be used to stop the motion of objects, as long as its blur panning or shooting night-lit landscapes. For this you need to put the mode dial to S and select a shutter speed by turning the control dial. The exposure value will be displayed in the information display and viewfinder. You can then focus and take the picture.
Auto with aperture-priority (A)
In aperture priority mode it selects the value of the user and the camera sets the optimum in these conditions the exposure parameters. Large aperture and low f-numbers will help blur objects behind and in front of the object in focus. It is best to use these settings when shooting portraits to blur the background. A small aperture and a large f-number makes parts front and back clearer, ideal for landscapes.
In order to start shooting in this mode, turn the mode dial Nikon В3100 in position A. the camera Then prompts you to select the aperture, its value is displayed on the information screen. To select the aperture value, turn the control dial, then you can focus and take the picture.
Manual mode M
In this mode, the shutter speed and aperture are set by the photographer. The mode dial you have to turn in the M position, then you should check the exposure indicator. In that case, if the lens is equipped with a built-in microprocessor and the selected exposure different from the automatic settings, the exposure indicator will signal whether the over - or netexposure. If exceeding of the measuring system of the exposure meter, the indicator starts to flash. It can be seen on the information screen of the camera and in the viewfinder.
In manual mode you choose the shutter speed in the range of 30 to 1/4000 seconds, you can also set the option "bulb" then the shutter will be open for a long time, pressed his shutter release button. The aperture is set by pressing the button with its image and rotating the command dial. The aperture value and shutter speed will display on the information screen in the camera viewfinder.