Nikon 900 User Manual
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First Steps: Basic Photography (A-REC)
Note:
The field of view of the viewfinder is approximately 85%
of that of the lens. The viewfinder will therefore show an area
slightly smaller than that which will appear in the actual photo-
graph. At distances of between 8 and 50 cm (3˝ – 20˝), objects
centered in viewfinder will appear off-center in the actual photo-
graph. Use the macro close-up field of view or the color LCD
monitor when framing subjects at a short distance from the lens.
Note:
The viewfinder is equipped with optical zoom linked to the
lens. The viewfinder does not however show images framed in
digital-zoom mode at the actual zoom ratio. Use the monitor
when taking photographs with digital zoom.
Step 7—Half-press the shutter-release button
When the shutter-release button is pressed halfway, the camera
will determine the aperture and shutter speed best suited to
current lighting conditions and the distance to the subject.
Once the focus operation is complete, the green autofocus
lamp next to the viewfinder will glow steadily. These settings
will remain unchanged as long as the shutter button is half-
pressed, even if the distance to the subject should change; this
“focus lock” can be used to focus the camera on a subject not
in the center of the final composition. The zoom ratio cannot
be changed while focus lock is in effect.
Autofocus does not perform well when the image framed
contains little contrast, when the subject at the focus point is
much brighter than the remainder of the image, when the
subject is poorly lit, when both distant and nearby objects are at
the focus point, or when the subject is moving rapidly. If the
camera is unable to determine the distance to the subject, the
autofocus lamp will flash. In this case you should focus on a
new subject at the same distance as the original subject and
half-press the shutter-release button, then check to be sure that
the autofocus lamp is glowing steadily. With the shutter release
button held half-way down, return the camera to its original
position and press the button the rest of the way down.
Note:
When the monitor is on, the camera will record a photo-
graph even when it is unable to determine the distance to the
subject. Check the monitor to be sure that the camera is in focus
before pressing the shutter-release button all the way down.
If the red flash lamp next to the viewfinder blinks when the
shutter is half-pressed, the flash is charging and you will need to
wait for a few seconds before pressing the shutter button all the
way down to record a photograph.