Sigma SD15 User Manual

52
SELECTING THE AUTOFOCUS MODE
1
Press the button to display the
Function Display.
2
Use the button to select AF Mode and
press the
button or the button.
3
Select the desired options by pressing the
button and then press the button or
the
button.
(Default)
SINGLE AF MODE
Depress and hold the shutter button “Half-way” to activate the
autofocus function. In order to avoid out of focus exposures, the
shutter cannot be released until the subject is in focus. This is called
“focus priority”. The Focus Indicator lights up in the viewfinder, when
the AF Point Selection is focused on the subject and the focus is
locked. Press the shutter button the rest of the way to take the
picture. If the camera cannot focus on the subject properly, remove
your finger from the shutter button and press again.
■ Focus indicator will blink, if the subject is out of focus.
■ Use your camera in this mode for regular photography
■ It is possible to turn the electronic sound off. Set [AF Beep] in
Camera Set-up menu (P. 2 8 ) to [Off].
CONTINUOUS AF MODE
Press the shutter button “Half-way” to activate the autofocus
function. If the subject is in motion, the camera will focus
continuously with motion prediction function. You can release the
shutter any time, even if the subject is not precisely in focus.
However, depending on the subject situation, (i.e. speed and
direction of moving subject, the lens and shutter speed etc.) there is
a possibility that the picture may be out of focus.
■ Focus indicator will not appear.
■ Autofocus lock does not work.
■ Depending on some unusual conditions of the subject, sometimes
autofocusing is not possible.
■ When the Automatic Selection mode of the AF Point Selection is
selected, the camera automatically selects the initial focus point
for tracking the subject.

Sigma SD15 Specifications

General

Camera Type	Interchangeable Lens SLR Type Digital Camera
Image Sensor Size	13.8 x 20.7mm
Lenses Used	Sigma SA Mount Lenses
Picture Angle	Equivalent to 1.7x the focal length of a lens when used on a 35mm SLR camera.
Lens Mount	SA mount
Imaging Element Type	FOVEON® X3™ (CMOS)
Color Photo Detectors	14.06 Million (2652 Columns x 1768 Rows x 3 Layers)
Image Recording Format	Lossless compression RAW Data (12bit), JEPG
White Balance	8 Type (Auto, Sunlight, Shade, Overcast, Incandescent, Fluorescent, Flash, Custom white balance)
Viewfinder Type	Pentaprism SLR Viewfinder
Viewfinder Frame Coverage	98％ horizontal, 98％ vertical
Viewfinder Magnification	0.9x (50mm F1.4 at infinity)
Eyepoint	18mm
Diopter Adjustment Range	-3dpt to +1.5dpt
Auto Focus Type	TTL phase difference detection system
AF Operating Range	EV 0 to 18 (ISO100)
Focus Mode	Single AF, Continuous AF (AF Predict function), MF
Metering Systems	Evaluative Metering, Center-Weighted Average Metering, Center Area Metering, Spot metering
Metering Range	EV 1 to 20 (with 50mm F1.4 at ISO100)
Exposure Modes	(P) Program AE、(A) Aperture Priority AE、 (S) Shutter Speed Priority AE、(M) Manual
ISO Sensivity	ISO (50), 100, 200, 400, 800, 1600, (3200) *( )Extended Mode
Exposure Compensation	±3EV (in 1/3steps)
AE Lock	Push button type
Auto Bracketing	Three or five frames (in 1/3steps, Appropriate Exposure – Under Exposure – Over Exposure)
Shutter Type	Vertical-travel metal focal plane shutter, electronically controlled through entire speed range
Storage Media	SD Card / Compatible with SDHC, Multi Media Card
Aspect Ratio	3：2
Resolution	HI：2640 x 1760 MED：1872 x 1248, LOW：1312 x 880
Interfaces	USB 2.0, Video Out (NTSC／PAL)