Sigma SD15 User Manual

43
A APERTURE PRIORITY AE
After you set the aperture, the camera will determine the appropriate shutter
speed. If you select smaller apertures, depth of field will be greater. Larger
apertures tend to blur the background, as depth of field will be shallower.
1
Set the “D”-Dial to “Drive–Area” (P. 1 4 ).
2
Set the “Mode”-Dial to the A position
3
Press the shutter button “Half-Way” to
verify the focus, and select the desired
aperture value by turning the “C” –Dial.
4
Verify the setting in the viewfinder.
If the appropriate shutter speed is outside
the range of suitable combinations due to
the subject being too bright or too dark,
the shutter speed indicator will blink. If the
subject is too bright, set the aperture
value to a smaller one (larger F-number).
If the subject is too dark, set the aperture
value to a larger one (smaller F-number)
until the indicator stops blinking.

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)