Pentax OPTIO S4I Operating Manual page 29

Using the Shutter Release Button
The shutter release button works in a two-step action as follows.
Press halfway
The focus, exposure and white balance are locked when the shutter
release button is pressed lightly (halfway). The shutter speed and
aperture settings only appear on the LCD monitor when the shutter
release button is pressed halfway. The following information is indicated
on the LCD monitor and by the focus status and flash status lamps when
the shutter release button is pressed halfway.
1. Focus frame
The focus frame turns green if the subject is in focus. The frame does
not appear if the subject is out of focus.
2. Status lamps
Focus status lamp (green)
Lit Subject is in focus
Blinks Subject is out of focus
Pictures cannot be taken while the flash is charging.
Press down fully
Press the shutter release button all the way down (fully) to take a picture.
[Poor focusing conditions]
The camera may not be able to focus under the following conditions.
In this case, lock the focus on an object the same distance away as
the subject (by pressing the shutter release button halfway), then aim
the camera at your subject and press the shutter release button fully.
• Objects that lack contrast such as a blue sky or white wall
• Dark places or objects, or conditions that prevent light being reflected back
• Finely patternd object
• Fast moving objects
• When there is an object in the foreground and an object in the background
in the same picture
• Strongly reflected light or strong backlighting (bright background)
Instant Review
The Instant Review default setting is one second. During this time, you
can delete the image by pressing the
the [Delete] menu appears and pressing the OK button. (
You can also record a voice memo by pressing the OK button during
Instant Review. ( p.88)
1
Setting the Instant Review Time
Flash status lamp (red)
Flash is charged
Flash is charging
button, selecting [Delete] when
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p.96)
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