FujiFilm FinePix S20 Pro EXPOSURE (SHUTTER SPEED AND APERTURE), FOCUSING (DISTANCE)

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Advanced
Features
EXPOSURE (SHUTTER SPEED AND APERTURE)
STILL PHOTOGRAPHY FUNCTIONS
Closed Open
When shooting a moving subject, you can either “freeze the motion” or “capture the sense of
movement” by adjusting the shutter speed.
Freezes the motion of the
subject.
Photographs the traces left
by the subject's movement.
By adjusting the aperture, you can change the depth of focus (depth of field).
The area in front of and
behind the subject is also
in focus in the shot.
The background is out of
focus.
Fast Slow
Shutter speed
Aperture
FOCUSING (DISTANCE)
STILL PHOTOGRAPHY FUNCTIONS
Exposure refers to the light that hits the CCD or the total amount of captured light and determines
the brightness of the image.
The exposure is determined by the combination of aperture and shutter speed. In AE (automatic
exposure), the camera determines the correct exposure, allowing for factors such as the brightness
of the subject and the sensitivity setting.
The graph at left shows the way the aperture and shutter speed settings can
be changed while maintaining the same exposure level.
hWhen the aperture is decreased by one step, the shutter speed also
decreases by one step (the dot moves upper left).
hWhen the aperture is increased by one step, the shutter speed also
increases by one step (the dot moves lower right).
hCombinations that result in the shutter speed or aperture being outside the
available range of settings cannot be selected (white dots).
hIn the “N”, “M” and “<” photography modes, it is easy to select different
settings along this line.
hSelecting settings that run parallel to this line by adjusting the brightness of
the photographed image is referred to as exposure compensation.
OpenClosed (Aperture)
Slow (Shutter speed) Fast
◆When you cannot get the correct exposure ◆
AE lock:Determines and fixes the exposure at a target level. Use the following procedure to take a
picture using AE lock:
Press the “AE-L” button (sets and locks the
exposure). ➡Press the Shutter button down
halfway (sets and fixes the focus). ➡Press
the Shutter button down fully (takes the
picture).
Exposure compensation:
This function uses the exposure level set by
the AE function as a reference (0) and then brightens (+) or darkens (–) the image. By
selecting Auto bracketing, you can shoot 3 frames, one underexposed (–), one at the
reference exposure (0) and one overexposed (+).
(–) (0) (+)
Main subject
The distance from the subject to the camera is referred to as the shooting distance.
When the shooting distance is set correctly and the image appears sharp, the image is focused.
■Three focusing methods
There are mechanisms for focusing: (1) Single AF (S-AF); (2) Continuous AF (C-AF); and (3)
Manual focus (MF).
S-AF: Use S-AF for normal photography. In this mode, the camera focuses each time the Shutter
button is pressed down halfway.
✽2 Turning Macro mode ON/OFF
Wide angle:
50 cm (1.6 ft.) to infinity
Telephoto:
90 cm (3.0 ft.) to infinity
10 cm-80 cm
(3.9 in.-2.6 ft.)
1 cm-20 cm
(0.4 in.-7.9 in.)
Macro OFF Macro ON Super Macro ON
C-AF:Use C-AF when photographing moving subjects. When this mode is set, the camera
focuses continuously on the subject in the center of the screen. See P.49 for details.
MF: The focus is adjusted by turning the focusing ring manually. See P.48 for details.
◆The AF sensor ◆
The FinePix S20 Pro uses an external AF sensor (external-light passive phase difference AF)
that features faster AF operation than previous models. The external AF sensor does not
function when Macro mode, Super macro mode, the digital zoom, AREA or C-AF focusing is
used or when “ADAPTER-YES” is selected. It may take longer to focus if the external AF sensor
is soiled (➡P.113).
■Causes of focusing errors and the solutions
The subject is not suited to AF. Use AF lock (Focus mode: AF (CENTER))✽1 or MF.
The subject is not in the AF frame. Use AF lock (Focus mode: AF (CENTER))✽1 or MF.
The subject is outside the shooting range. Turn Macro mode on or off (✽2).
The subject is moving too quickly. Use MF (pre-setting the shooting distance for a shot )
Cause Solution
✽1 Taking pictures using AF lock
Recompose the shot and take the picture.Capture the subject
◆Subjects not suitable for auto focus ◆
hVery shiny subjects such as a mirror or car
body
hSubjects photographed through glass
hSubjects that do not reflect well, such as hair
or fur
hSubjects with no substance, such as smoke
or flames
hWhen the subject is dark
hSubjects moving at high speed
hWhen there is very little contrast between the
subject and the background (such as white
walls or subjects dressed in the same color as
the background)
hWhen there is a high-contrast subject other
than the main subject at or near the center of
the image and that subject is closer to or
further from the camera than the main subject
(as when taking a picture of someone against
a background with contrasting colors)
Main subject