Pentax Optio S4i Review
By Movable Type Admin
Features & Controls
The Optio S4i features a Pentax 5.8-17.4mm 3x optical zoom with a 35mm equivalent focal length of 35 - 105mm, the maximum aperture is f2.6 - f4.8. The lens is all glass and consists of 6 elements in 5 groups with 2 dual-sided aspherical elements. When the camera is powered down the lens is retracted inside of the body and a built in shutter closes to protect the lens.
It has a 7-point AF system with user-selectable AF point location, Spot AF, infinity
landscape and manual focus. The focusing range in Normal
mode is 1.31 ft (0.4m) to Infinity; Macro mode: 7.1 inches (0.18 m) to 1.64 ft (0.5m);
Super Macro mode: 2.4 inches (0.06m) to 7.9 inches (0.2m) at 10.2mm focal length.
To focus manually -- Press the Focus mode button until "MF"
is displayed and then adjust the focus distance by using the Up and Down positions of
the 4-way controller. When you are actively changing the focus, the center portion of
the LCD display is magnified and a distance scale is shown on the left.
The focus can also be locked at infinity.
One other focusing feature is the ability to freely move the active AF Area to any
one of the seven positions within the frame.
You can frame your pictures with the color LCD or to save battery power you
can use the optical eyelevel finder. This is a coupled viewfinder with approx. 82%
coverage. It has no dioptric adjustment. Next to the finder are two LEDs
that indicate the flash and focus status.
The built in flash offers Auto, On, Off, Auto + Red-Eye Reduction, On + Red-Eye
Reduction. Flash range is
approx. 0.65ft -11.5ft (0.2m - 3.5m) (5.8mm at ISO 200 )
Approx. 0.65ft -6.6ft (0.2m - 2m) (17.4mm at ISO 200)
On the top is the On/Off power button and the shutter release. In my opinion this was
a really -bad- place to put the power button, I imagine more than a few users will
accidentally turn the camera off instead of taking a picture.
In the upper right is the zoom control which also functions as the index/magnify control in playback mode. Next to that is the focus mode button (macro, infinity, manual focus and AF point select) and flash mode button. The Quick "green" button is new, when pressed it switches the camera to Green mode (fully automatic). You can select your own custom setting for this button under the Quick Button option found in the Setup menu. The 4-way controller lets you navigate menus and select images during playback. In record mode you press "Up" to enable remote or selftimer mode and press "Down" to access the virtual mode dial which we'll detail on the next page.
The MENU button calls up and dismisses the menus, the DISPLAY button
turns the color LCD on/off and controls the amount of data displayed on it.
The I/O ports:
The Optio S4i is equipped with 10MB of internal memory and has a Secure Digital (SD)
card slot in the battery compartment for
optional memory cards. It's compatible with up to 512MB size SD cards. Data recorded on
the internal memory can be copied to SD card.
The Optio S4i is powered by a proprietary D-LI8 3.7V 710mAh rechargeable
lithium-ion battery pack. Pentax claims the battery life is good for approx.
180 shots (LCD turned on and using the flash 50% of the time),
continuous playback time is approx. 110 minutes.
The D-LI8 battery can be charged in the camera with the included recharging base or the battery can be charged by itself. Charging time is a maximum of 100 minutes.
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