Top of camera controls
All of the D40's "top of camera controls" are located on the right side in reach of your right hand. At the front we have the typical Nikon combined power switch and shutter release, behind this the new 'info' button and the exposure compensation button and behind this the mode dial. On the rear of the camera "under your thumb" is the AE/AF lock button and command dial.
Press and hold the info and magnify (rear) buttons together for more than two seconds to perform a 'two-button reset', this returns all camera settings to defaults, although doesn't affect custom function settings.
Buttons (combined with the command dial)
+/- 5 EV
0.3 EV steps
Single Press Buttons
Press this button to toggle the main LCD information display on and off. You can also choose (via the setup menu) to have the information display on by default.
|Auto Exposure and Auto Focus Lock
Pressing this button locks the current exposure and focus, they remain locked for as long as you hold the button even if you press or release the shutter release button.
|AUTO|| Automatic Exposure
The D40's fully automatic exposure mode configures the camera to make most of the decisions for you, for example you can't set flash compensation, white balance, metering mode or image parameters. However you do still have control over some camera functions:
Sensitivity (Auto, 200 - HI 1.0)
AF Mode (AF-A, MF)
AF area mode (Closest subject, Dynamic area, Single area)
Flash mode (Auto, Auto with Red-Eye reduction, Flash cancel)
Shooting mode (Single, Continuous, Self-timer, Remote + Self-timer, Remote)
Image quality (all options)
|P||Programmed Auto (Flexible)
In this mode the camera automatically selects aperture and shutter speed based on the current metered exposure value, exposure compensation and selected ISO sensitivity. The Program AE on the D40 is flexible, which means that you can select one of a variety of equal exposures by turning the command dial. Example:
1/50 F5.6 (turn left a click) P*
1/60 F5 (turn left a click) P*
1/80 F4.5 (metered) P
1/100 F4 (turn right a click) P*
1/125 F3.5 (turn right a click) P*
|S||Shutter Priority Auto
In this mode you select the shutter speed and the camera will calculate the correct aperture for the exposure (based on the reading of the current metering mode). Shutter speed is displayed on the viewfinder status bar and on information display, turn the command dial to select different shutter speeds. Available shutter speeds (1/3 EV steps):
1/4000, 1/3200, 1/2500, 1/2000, 1/1600, 1/1250, 1/1000, 1/800, 1/640, 1/500, 1/400, 1/320, 1/250, 1/200, 1/160, 1/125, 1/100, 1/80, 1/60, 1/50, 1/40, 1/30, 1/25, 1/20, 1/15, 1/13, 1/10, 1/8, 1/6, 1/5, 1/4, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.3, 1.6, 2, 2.5, 3.2, 4, 5, 6, 8, 10, 13, 15, 20, 25, 30 sec
Aperture Priority Auto
Full Manual Exposure
|Vari-program: Flash off
The built-in flash turns off. Use where flash photography is prohibited, to photograph infants without using the flash, or to capture natural lighting under low light. The camera selects the focus area containing the closest subject; the AF-assist illuminator will light to assist the focus operation when lighting is poor.
Use for portraits with soft, natural-looking skin tones. The camera selects the focus area containing the closest subject. If the subject is far from the background or a telephoto lens is used, background details will be softened to lend the composition a sense of depth.
Use for vivid landscape shots. The camera selects the focus area containing the closest subject; the built-in flash and AF-assist illuminator turn off automatically.
Use for snapshots of children. Clothing and background details are vividly rendered while skin tones are given a soft, natural finish. The camera selects the focus area containing the closest subject.
High shutter speeds freeze motion for dynamic sports shots in which the main subject stands out clearly. The camera focuses continuously while the shutter-release button is pressed halfway, tracking the subject in the center focus area. If the subject leaves the center focus area, the camera will continue to focus based on information from the other focus areas. The starting focus area can be selected with the multi selector. The built-in flash and AF-assist illuminator turn off automatically.
|Vari-program: Close up
Use for close-up shots of flowers, insects, and other small objects. The camera automatically focuses on the subject in the center focus area; other focus areas can be selected using the multi selector. Use of a tripod is recommended to prevent blur.
|Vari-program: Night Portrait
Use for a natural balance between the main subject and the background in portraits taken under low light. The camera selects the focus area containing the closest subject. Use of a tripod is recommended to prevent blur.
* Description of Digital Vari-program modes taken from the Nikon D40 user manual with permission.