Sigma DP1 Merrill User Manual

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HISTOGRAM
The histogram is a graph depicting the distribution of brightness
values in the image for each of the three color channels (Red, Green,
and Blue) (The histogram displayed in the Shooting Mode is the
distribution of tones in the image). The horizontal axis shows the
brightness level, with darker pixels towards the left side and brighter
pixels toward the right. The vertical axis shows the proportion of
pixels at each level of brightness.
By examining the histogram of the full image, you can gauge the overall
exposure of that image. You can also use the histogram to determine if
zoomed-in sections of an image are over or under exposed.
This histogram shows that the higher pixel
values are never used in the image,
indicating that the image is underexposed,
and therefore will appear dark. In general,
when the histogram is higher on the left side,
the image is mostly composed of dark pixels,
causing it to appear dark—either because
the image is underexposed or because it is
a dark scene such as night shot or sunset.
This histogram shows a fairly even
distribution of pixel values, indicating that
the image is well exposed, with good
contrast. However, the histogram
distribution of a well exposed image will vary
greatly depending on the subject.
This histogram shows that many of the pixel
values are at their brightness limit, indicating
that some areas of the image may be blown
out. In general, when the histogram runs off
the right side, the image will have many
white pixels—either because the image is
overexposed or because it is a bright scene
such as the beach or snow.

Sigma DP1 Merrill Specifications

General

Megapixel	46 MP
Camera type	Compact camera
Sensor type	CMOS
Image stabilizer	No
Total megapixels	48 MP
Image sensor size	- \
Image formats supported	JPG
Supported aspect ratios	3:2
Maximum image resolution	4704 x 3136 pixels
Still image resolution(s)	3264 x 2176
Optical zoom	- x
Focal length range	- mm
Minimum aperture number	2.8
Number of diaphragm blades	9
Lens structure (elements/groups)	9/8
Auto focusing (AF) modes	Contrast Detection Auto Focus, Multi Point Auto Focus, Selective Auto Focus
Closest focusing distance	0.2 m
Light metering	Centre-weighted, Evaluative (Multi-pattern), Spot
ISO sensitivity	-
Light exposure modes	Aperture priority AE, Auto, Manual, Shutter priority AE
Auto Exposure (AE) lock	Yes
Fastest camera shutter speed	1/2000 s
Slowest camera shutter speed	30 s
HD type	Not supported
Motion JPEG frame rate	30 fps
Video formats supported	M-JPEG
Maximum video resolution	640 x 480 pixels
Analog signal format system	NTSC, PAL
Audio formats supported	WAV
Internal memory	- MB
Compatible memory cards	MMC, SD
Display diagonal	3 \
Display resolution (numeric)	920000 pixels
USB version	2.0
Product color	Black
Photo effects	Black&White, Neutral, Sepia, Vivid
White balance	Auto, Custom modes, Daylight, Flash, Fluorescent, Incandescent, Shade
Self-timer delay	2, 10 s
Camera file system	DCF 2.0, DPOF 1.1, Exif 2.21, RAW
On Screen Display (OSD) languages	CHI (SIMPL), CHI (TR), DAN, DEU, DUT, ENG, ESP, FIN, FRE, ITA, JPN, KOR, NOR, POL, POR, RUS, SWE
Power source type	Battery
Battery type	BP-41
Number of batteries supported	1
Cables included	AV, USB

Weight and Dimensions

Depth	64.3 mm
Width	121.5 mm
Height	66.7 mm
Weight	340 g

Summary

SAFETY PRECAUTIONS

Battery, Charger, and AC Adapter Safety

Warnings and precautions for batteries, chargers, and AC adapters.

Camera Safety

Safety instructions for camera operation and handling.

General Cautions

Cautions for camera and adapter use.

HANDLING PRECAUTIONS

Environment Considerations

Guidelines for camera usage in different environmental conditions.

Prolonged Use Considerations

DESCRIPTION OF THE PARTS

COLOR LCD MONITOR INDICATION

BASIC OPERATION AND QUICK REFERENCE

PREPARATION

Camera Setup Steps

Taking Pictures

Steps to turn on the camera, focus, and capture an image.

USING THE EXTERNAL FLASH

TROUBLESHOOTING

Display Issues

Solutions for problems with the LCD monitor display.

Operational Issues

Troubleshooting common camera operational problems.

Image Quality Issues