Sigma SD15 Brochure & Specs

The photographer's everything
— the camera.
The photographer chooses the
subject from many possibilities,
capturing it in just the right light and
shadow, at the perfect angle, and in
the ideal frame. These elements come
together for only an instant, so the
photographer must work carefully but
quickly.
A camera gives permanent life to
these fleeting instants, capturing not
only the objective facts but also the
meaning and subjective emotions
associated with them. For nearly
two centuries, photographers have
worked to preserve the objective
and subjective with greater accuracy
and fidelity, and camera makers have
crafted more and more sophisticated
instruments with which to accomplish
these objectives.
Two elements of
photographic expression
In recent years, it's become more
and more difficult to choose a digital
camera from the many available
options. But no matter how complex
cameras become, the essence of
photography remains the same:
capturing the image as it exists in the
photographer's imagination.
The two parts of the camera essential
to this task are the lens and the
image sensor.
In the era of film, photographers
made fine adjustments to their
cameras and played with the
difference between films, aiming
for different colors and levels of
exposure and graininess as the
mood suited them. In the digital era,
however, although the consistency
of cameras has increased, their
individuality has tended to diminish,
making the photographer's choice of
instrument more difficult.
The sensor and the lens make
the photograph
The image sensor is the key to
taking a more individualistic digital
photograph. To choose the best
camera, a photographer must
understand the differences between
the image sensors available, selecting
the one that offers the greatest
precision and best image quality.
Then, armed with the image sensor
that matches his or her photographic
vision, a photographer may select
and deploy a variety of lenses that
complement the sensor. The camera
system that best empowers the
dedicated photographer's ideal
approach today is the Sigma digital
single-lens reflex camera.
A new camera for a new era
05

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)