Sigma Digital SLR Camera SD14 User Manual

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Color Temperature
The numerical expression of the tone of the light, produced by a light source. The
standard unit for color temperature is degrees Kelvin (K). The sunny daylight
used as a standard near 5600 K. Low color temperature implies warmer more
yellow/red light while high color temperature implies a colder more blue light. The
typical color temperature of Tungsten light is 3200 K grade, a personal computer
is 9300 K.
Exposure.
The amount of light reaching the image sensor’s surface. The exposure is
controlled by the combination of aperture and shutter speed.
EV
Exposure Value (EV) is a numerical value that expresses the amount of light for a
given exposure, and depends on brightness of the photographic subject and
sensitivity of the film. If a photographic subject is bright, then this numerical value
will be large, and if the subject is dark then this numerical value will be small. If
two-times of light reaches the film surface then the difference in exposure value
will be +1, and if the amount of light is reduced by half, the exposure value
changes by -1.
Histogram
The histogram function is a graphic representation of how bright and dark pixels
are distributed in an image. The histogram function enables a precise check on
the exposure of the photo.
ISO Sensitivity
ISO（International Organization for Standardization）; refers to the number
assigned to each silver halide film, which indicates film speed or the film's relative
sensitivity to light, the higher the number, the greater photosensitivity and vice
versa. Digital cameras also use standard ISO sensitivity ratings like silver halide
films.
JPEG
Joint Photographic Experts Group has established a standard method for
compressing and decompressing the digitized images. If the rate of compression
is high the file size will be small but picture quality will be decreased.

Sigma Digital SLR Camera SD14 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	8-segment Evaluative Metering, Center Metering, Center-Weighted Average 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 100, 200, 400, 800, (1600)
Exposure Compensation	±3EV（in 1/3steps）
AE Lock	Push button type
Auto Bracketing	±3EV （ in 1/3steps, Appropriate Exposure – Under Exposure – Over Exposure）
Shutter Type	Vertical-travel metal focal plane shutter, electronically controlled through entire speed range
Shutter Speeds	1/4000sec to 30sec, Bulb up to 30sec Flash Synchronization at 1/180sec.
Storage Media	CompactFlash™ (CF) (TypeⅠ/Ⅱ), HITACHI MicroDrive™
Aspect Ratio	3：2
Resolution	Super Hi(JPEG) : 4608 x 3072, HI：2640 x 1760 MED：1776 x 1184, LOW：1296 x 864
Interfaces	USB 2.0, Video Out (NTSC／PAL)