Nikon D3100 - Manual (Page 212)

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Lens
Compatible lenses • AF-S or AF-I: All functions supported.
• Type G or D AF NIKKOR without built-in autofocus motor: All functions except
autofocus supported. IX NIKKOR lenses not supported.
• Other AF NIKKOR: All functions supported except autofocus and 3D color
matrix metering II. Lenses for F3AF not supported.
• Type D PC NIKKOR: All functions supported except autofocus and some
shooting modes.
• AI-P NIKKOR: All functions supported except autofocus and 3D color
matrix metering II.
• Non-CPU: Autofocus not supported. Can be used in mode M, but
exposure meter does not function.
Electronic rangefinder can be used if lens has a maximum aperture of
f/5.6 or faster.
Shutter
Type Electronically-controlled vertical-travel focal-plane shutter
Speed 1 /
4000
– 30 s in steps of 1 /
3
EV, bulb
Flash sync speed X= 1 /
200
s; synchronizes with shutter at 1 /
200
s or slower
Release
Release mode 8 (single frame), I (continuous), E (self-timer), J (quiet shutter
release)
Frame advance rate Up to 3 fps (manual focus, mode M or S, shutter speed 1 /
250
s or faster, and
other settings at default values)
Self-timer 2 s, 10 s
Exposure
Metering TTL exposure metering using 420-pixel RGB sensor
Metering method • Matrix: 3D color matrix metering II (type G and D lenses); color matrix
metering II (other CPU lenses)
• Center-weighted: Weight of 75% given to 8-mm circle in center of frame
• Spot: Meters 3.5-mm circle (about 2.5% of frame) centered on selected
focus point
Range (ISO 100, f/1.4
lens, 20 °C/68 °F) • Matrix or center-weighted metering: 0–20 EV
• Spot metering: 2–20 EV
Exposure meter
coupling
CPU
Mode Auto modes ( i auto; j auto (flash off )); scene modes (k portrait;
l landscape; p child; m sports; n close up; o night portrait);
programmed auto with flexible program (P); shutter-priority auto (S);
aperture-priority auto (A); manual (M)
Exposure compensation –5 – +5 EV in increments of 1 /
3
EV
Exposure lock Luminosity locked at detected value with AE-L/AF-L button