The Coolpix S4 captures images using
a 6.4 million pixel, 1/2.5-inch CCD of which 6.0 million pixels
are effective. The CCD yields a maximum image size of 2816
x 2112 pixels and has a sensitivity that can be manually
set to 50, 100, 200 or 400 ISO, or left on Auto, which allows
the camera to adjust it from 50 to 200 ISO as warranted by lighting
conditions.
The S4's Nikkor zoom lens
is composed of 12 elements in 9 groups. The zoom has a focal
length of 6.3 to 63mm, the 35mm
equivalent of a 38 to 380mm lens, and its apertures start
at f3.5
and close down to f13.6. These apertures are combined with
a shutter speed range that covers from 2 seconds to 1/1000
second. The lens is protected by a hinged lens cap that clips
onto the lens trim. The lens cover opens like a door and can
be moved back so that it is flat against the lens barrel.
This design avoids having a tether, and should prevent the
cap from getting lost.
A digital zoom is also included,
and is a permanent extension to the zoom's maximum focal length.
The digital zoom is engaged when the zoom is at its maximum
telephoto and the zoom control is held pressed for more than
2 seconds.
With the Coolpix S4, images
can be recorded using any one of four image sizes. However,
only two compression ratios are available at the highest image
resolution, all others offering a single ratio:
The Coolpix S4 is fully automatic,
and the exposure metering is done using Nikon's TTL Matrix
metering system that evaluates 256 segments of the frame
to establish the exposure. There is no other metering pattern
offered.
Overall, most settings are under the camera's control, particularly
when the Scene modes are in use. Then, the menu is limited
to an access to the setup options, the selection for image
size and compression and of course, the access to the other
Scene modes (see the Ergonomics section of the review for
a list of the Scene modes offered).
With the Auto Shooting Mode, however, a few user-selectable
functions can be chosen in the Recording menu:
Setup: provides access to the Setup menu. (See
the Interface and Softwaresection
of the review for more detail.)
Image Mode: select the image resolution and quality
(see above).
White Balance provides 7 settings: Auto, White
Balance Preset (to set the white balance under ambient light
conditions), Daylight, Incandescent, Fluorescent, Cloudy,
and Flash.
Exposure Compensation: allows increasing or decreasing
the brightness of the exposure over ±2 EV in 1/3
EV increments.
Continuous:
Single: captures one image each time the shutter
release is pressed.
Continuous: captures up to 8 images at 1.3
frames per second and at the 6M* image size and
quality until the buffer is full.
Multi-Shot 16: captures sixteen 704 x 528 pixel
images at approximately 1.3 frames per second and stores
them contiguously into a single 2816 x 2112 pixel image
(6M Normal).
Interval Timer Shooting: allows capturing images
at a preset interval of 30 seconds, 1, 5, 10, 30 or
60 minutes, while either retaining the exposure parameters
if desired for up to 1800 images, or until the memory
card is full.
BSS (Best Shot Selector) provides three options:
BSS Off.
BSS On: the camera captures up to 10 images
while the shutter release is pressed, but only records
the sharpest image — based on contrast —
of those that were captured.
AE Exposure BSS: works as above, but offers
the choice to record:
Highlight BSS: the picture with the smallest
area of overexposure.
Shadow BSS: the picture with the smallest
area of underexposure.
Histogram BSS: the image with the least
over- or underexposure.
Sensitivity decides the CCD sensitivity, and is
only available with the Auto Shooting mode: 50, 100, 200,
400 ISO or Auto, which lets the camera choose the appropriate
sensitivity between 50 and 200 ISO).
Colour Options: Standard (default), Vivid (increases
saturation), Black and White, Sepia (brown tone image),
Cyanotype (blue tone image).
The other shooting mode of
the Coolpix S4 is the Movie Mode, and its menu consists
of 4 options:
Setup: access to the setup options.
Movie Options decides the type of movie to be
recorded: TV Movie 640, Small Size 320, Smaller Size 160,
or Time-Lapse Movie (see the Ergonomics section
of the review for more details).
Auto Focus Mode: Single (S-AF) or continuous (C-AF).
Electronic VR: an electronic Vibration Reduction
system that smoothes out camera shake electronically. (Not
available for time-lapse movie mode.)
Switching the camera to the Playback
mode, the menu has a similar presentation:
Setup: as with the capture menu, this first option
provides an access to the basic camera configuration menu.
(See the Interface and Software section of the
review for more details).
Print Set: serves to select photos for printing
on PictBridge compatible or DPOF-compatible devices.
Slide Show: presents images in sequence, each staying
on screen for 3 seconds. The slide show can be looped if
desired, and the Multi selector can be used to skip to the
next image or fast-forward the show.
Delete: to erase one or all images in memory or
those previously tagged for erasure.
Protect: to prevent images from being accidentally
deleted.
Transfer Marking: to mark photos for automatic
transfer when the camera is connected to a computer running
Nikon's software.
Small Pic is to create a small size copy of an
image in any of three sizes: 640 x 480, 320 x 240, or 160
x 120 pixels.
Copy: to copy all, or selected images from the
internal memory to a memory card, or vice versa.
Three other functions are available when the Coolpix S4 is
in Playback mode. First, a 20-second sound bite can
be added to an image by pressing the shutter release while
the image is displayed full-screen, and the recorded sound
is played back the same way. Second, if the image has been
magnified on the screen using the zoom control, the magnified
section can be saved a new, smaller-size image. Third, as
noted in the Ergonomics section of the review,
the Multi selector can be pressed in (OK) to call up
the D-Lighting function which serves to electronically
brighten up the darker image areas.
Out of the box, the Coolpix S4 comes with a standard 13.5
MB of internal memory, and a memory card slot for SD
memory cards. On the camera's right side, covered by a rigid
spring-loaded plastic door is located the SD card slot, from
which a card can be ejected by pressing on its edge.
The chart below provides the
approximate number of photos that can be recorded using the
internal memory, and an optional 1 GB SD card. Worth noting,
however, the S4 only displays 999 when more than 1000
images can be stored on the card:
Image
Format
13.5
MB Internal Memory
1
GB SD Card
6M*
4
339
6M
9
671
3M
16
1232
PC
57
4100
TV
123
8800
As sold in Canada, the Coolpix S4 includes a couple of rechargeable
Nickel Metal Hydride (Ni-MH) batteries and a charger (MH-71).
It is worth noting that these are options, and that in many
regions of the world the batteries and charger are sold separately.
An AC adapter (EH-62B) is
available as an option for the Coolpix S4. The adapter is
inserted in the battery compartment, and its wire is let out
through a small flexible plastic cover on the right side of
the camera, allowing the compartment's door to be shut.
There is only a single external connection for the Coolpix
S4, and it is located directly above the SD memory card compartment
on the right side of the camera. The jack serves for both
USB connection and AV Out, depending on the cable used, and
both cables are included with the camera.
The USB connection is compatible
with USB 2.0, but operates at USB 1.1 speed; and the protocol
can be set in the Setup menu to be either PTP (Picture Transfer
Protocol) which is compatible with PictBridge, or Mass Storage
which allows the camera to be recognized as removable hard disk
by most operating systems.
Similarly, the
Video Out signal can be set to be either NTSC or PAL in the
Setup menu (see the Interface and Software section
of the review for more details on the content of the Setup
menu).