Nikon D3100 Reference Manual

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5 Select the second photograph.
Press 2 to highlight Image 2. Repeat Steps 2–4
to select the second photo.
6 Set gain.
Highlight Image 1 or Image 2 and optimize
exposure for the overlay by pressing 1 or 3 to
set gain for the selected image to values
between 0.1 and 2.0.
Repeat for the second
image.
The default value is 1.0; selecting 0.5 cuts
gain in half, while selecting 2.0 doubles gain.
The
effects of gain are visible in the Preview column.
7 Highlight the Preview column.
Press 4 or 2 to highlight the Preview column.
8 Preview the overlay.
Press 1 or 3 to highlight Overlay and press J
(to save the overlay without displaying a
preview, highlight Save and press J).
To return
to Step 6 and select new photos or adjust gain,
press W.
9 Save the overlay.
Press J while the preview is displayed to save
the overlay.
After an overlay is created, the
resulting image will be displayed full-frame in
the monitor.
D Image Overlay
The overlay has the same photo info (including date of recording, metering, shutter speed,
aperture, shooting mode, exposure compensation, focal length, and image orientation) and
values for white balance and Picture Control as the photograph selected for Image 1.

Nikon D3100 Specifications

General

Megapixel	14.2 MP
Camera type	SLR Camera Body
Sensor type	CMOS
Image stabilizer	No
Image sensor size	- \
Maximum image resolution	4608 x 3072 pixels
Image sensor size (W x H)	23.1 x 15.4 mm
Still image resolution(s)	-
Digital zoom	- x
Focal length range	- mm
Interface	USB
Digital SLR	Yes
Power source type	Battery
Dimensions (WxDxH)	124 x 96 x 74.5 mm
Camera shutter speed	1/4000 - 30 s
Effective sensor resolution	14800000 pixels
Auto focusing (AF) modes	Single Auto Focus
ISO sensitivity	100, 200, 400, 800, 1600, 3200, Auto
Light exposure modes	aperture priority AE, auto, manual, shutter priority AE
Flash modes	Auto, Flash off, Red-eye reduction, Slow synchronization
Internal memory	- MB
Compatible memory cards	SD, SDHC, SDXC
Motion JPEG frame rate	30 fps
Maximum video resolution	1920 x 1080 pixels
Field of view	95 %
Display diagonal	3 \
Display resolution (numeric)	230000 pixels
Magnification	0.8 x
USB version	2.0
Scene modes	Children, Close-up (macro), Portrait
Photo effects	Black&White
White balance	Auto, Manual
Self-timer delay	10 s
Product color	Black
Fastest camera shutter speed	1/4000 s
Slowest camera shutter speed	30 s

Weight and Dimensions

Depth	96 mm
Width	124 mm
Height	74.5 mm
Weight	505 g