Sigma SD15 User Manual

62
SETTING A CUSTOM WHITE BALANCE
For more precise control of the white balance setting or when
photographing under unusual lighting conditions, the [Custom WB] option
can be used to capture a sample of neutral object in a scene to be used for
color correction.
1
Make sure that "D"-dial is set to Single Frame Shooting ＜ ＞ .
2
Press the button on the back of the camera to display the Camera Set-up
Menu. (See P. 28 )
3
Use arrows on the 4-way controller to select [Custom WB].
4
Press arrow or to open the custom white balance dialog screen.
5
Under the lighting conditions that will be used for the final photograph, frame a
white or neutral color object, such as a sheet of white paper or a white wall, so
that it fills the Center Area Metering circle inside the viewfinder.
6
Press the shutter button to release the shutter and capture a custom white
balance setting.
7
If a valid white balance setting was captured, a message will appear indicating
that the white balance image was captured successfully. If the capture was not
successful, "Failed!" will be displayed on the color LCD monitor. Repeat steps
5
and
6 to capture a valid white balance setting or press to dismiss the dialog.
CAUTION !!
• When a custom white balance setting is successfully captured, "Custom" will
automatically become the selected item in the White Balance menu.
• It is recommended that an automatic exposure mode such as P , A , or S be
used when capturing a custom white balance setting to ensure proper
exposure.
• It may be necessary to set the lens to manual focus (P.55) when capturing a
custom white balance setting since auto focus may not work properly when
photographing low contrast subjects.

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)