Nikon D3100 with the Nikon 18-55mm zoom lens.
|Type||Digital single-lens reflex|
|Sensor||23.1 mm × 15.4 mm Nikon DX format RGB CMOS sensor, 1.5 × FOV crop, 4.94µm pixel size|
|Maximum resolution||4,608 × 3,072 (14.2 effective megapixels)|
|Lens||Interchangeable, Nikon F-mount|
|Flash||Built in Pop-up, Guide number 13m at ISO 100, Standard ISO hotshoe, Compatible with the Nikon Creative Lighting System|
|Shutter||Electronically-controlled vertical-travel focal-plane shutter|
|Shutter speed range||30 s to 1/4000 s in 1/2 or 1/3 stops and Bulb, 1/200 s X-sync|
|Exposure metering||TTL 3D Color Matrix Metering II metering with a 420 pixel RGB sensor|
|Exposure modes||Auto modes (auto, auto [flash off]), Guide Mode, Advanced Scene Modes (Portrait, Landscape, Sports, Close-up, Night Portrait), programmed auto with flexible program (P), shutter-priority auto (S), aperture-priority auto (A), manual (M), (Q) quiet mode.|
|Metering modes||3D Color Matrix Metering II, Center-weighted and Spot|
|Focus areas||11-area AF system, Multi-CAM 1000 AF Sensor Module|
|Focus modes||Instant single-servo (AF-S); full time-servo (AF-F); auto AF-S/AF-F selection (AF-A); manual (M)|
|Continuous shooting||3 frame/s|
|Viewfinder||Optical 0.80x, 95% Pentamirror|
|ASA/ISO range||100–3200 in 1/3 EV steps, up to 12800 as boost|
|Flash bracketing||2 or 3 frames in steps of 1/3, 1/2, 2/3, 1 or 2 EV|
|Custom WB||Auto, Incandescent, Fluorescent, Sunlight, Flash, Cloudy, Shade, Preset|
|Rear LCD monitor||3.0-inch 230,000 pixel pixel TFT-LCD|
|Storage||Secure Digital, SDHC and SDXC compatible|
|Battery||Nikon EN-EL14 rechargeable Lithium-Ion battery|
|Weight||Approx. 455 g (1.00 lb) without battery, memory card or body cap|
The Nikon D3100 is a 14.2 megapixel DX format DSLR Nikon F-mount camera announced by Nikon on August 19, 2010. It replaced the D3000 as Nikon's entry level DSLR. It introduced Nikon's new EXPEED 2 image processor and was the first Nikon DSLR featuring full high definition video recording with full time autofocus and H.264 compression, instead of Motion JPEG compression. It was also the first Nikon DSLR to provide high-definition video recording at more than one frame rate.
- Nikon's 14.2-megapixel Nikon DX format CMOS sensor.
- Nikon EXPEED 2 image processor.
- Active D-Lighting.
- Automatic chromatic aberration correction.
- Sensor cleaning and airflow control system.
- 3.0-inch 230,000-dot resolution fixed TFT LCD
- Continuous Drive up to 3 frames per second.
- Live view mode. Live view AF modes: Face priority, Wide area, Normal area, Subject tracking
- Full High Definition video recording (1080p for 10 minutes at 24 frames per second in H.264 codec), additionally 720p30/25/24 and 480p24
- Full time autofocus in movie mode.
- 3D Color Matrix Metering II with Scene Recognition System.
- 3D Tracking Multi-CAM 1000 autofocus sensor module with 11 AF points.
- ISO sensitivity 100 to 3200 (6400 and 12800 with boost).
- Nikon F-mount lenses.
- i-TTL flash exposure system without built-in, but support for external wireless flash commander.
- Extended In-camera retouching: D-Lighting, Red-eye reduction, Trimming, Monochrome & filter effects, Color balance, Small picture, Image overlay, NEF (RAW) processing, Quick retouch, Straighten, Distortion control, Fisheye, Color outline, Perspective control, Miniature effect, Edit movie
- File formats: JPEG, NEF (Nikon's RAW, 12-bit compressed)
- Compatibility with SDXC memory cards
Like Nikon's other consumer level DSLRs, the D3100 has no in-body autofocus motor, and fully automatic autofocus requires one of the currently 147 lenses with an integrated autofocus-motor. With any other lenses the camera's electronic rangefinder can be used to manually adjust focus.
Optional accessories 
The Nikon D3100 has available accessories such as:
- Nikon GP-1 GPS Unit for direct GPS geotagging. Third party solutions partly with 3-axis compass, data-logger, bluetooth and support for indoor use are available from Solmeta, Dawn, Easytag, Foolography, Gisteq and Phottix. See comparisons/reviews.
- Battery grip third party solutions are available.
- Nikon CF-DC1 Soft Case.
- Third party solutions for WLAN transmitter are available.
- Third party wireless (infrared) remote controls are available.
- Various Nikon Speedlight or third party flash units including devices with Nikon Creative Lighting System wireless flash commander or support for SU-800 Wireless Speedlight Commander.
- Third party radio (wireless) flash control triggers are partly supporting i-TTL, but do not support the Nikon Creative Lighting System (CLS). See reviews.
- Other accessories from Nikon and third parties, including protective cases and bags, eyepiece adapters and correction lenses, and underwater housings.
The D3100 is the only known Nikon DSLR with an image sensor interface integrating analog-to-digital converters not made by Nikon: The result is a dynamic range only at the level of competitors like the (higher priced) Canon EOS 600D; lower than other current Nikon DSLRs.
See also 
- "Nikon D3100". Digital SLR Cameras products line-up. Nikon Corporation.
- Laing, Gordon (November 2010). "Nikon D3100 Movie Mode". Nikon D3100 Review. CameraLabs.com. Retrieved February 6, 2012. "Previous Nikon DSLRs offered a best quality movie mode of 720p at 24fps, but now the D3100 offers the same resolution at the choice of 24, 25 or 30fps, while crucially adding a new Full HD 1080p mode at 24fps."
- Nikon "Nikon updates entry-level DSLR with 24MP D3200 and optional WiFi". Digital Photography Review. April 2012. Retrieved June 15, 2012.
- "Specifications – Nikon D3100". Nikon Corporation. Retrieved 2010-08-19.
- "Nikon D3000 Lens Compatibility". Nikon Corporation. Retrieved 2009-10-26.
- Nikon D60 electronic rangefinder. Digital Photography Review. Retrieved on 7 September 2012.
- John White's AI conversions for Nikon lenses Aiconversions
- "D3100 accessories". Nikon USA. Retrieved 2011-08-08.
- Solmeta Geotaggers Solmeta
- Dawn di-GPS Products Dawn
- EasyTag GPS and Wireless Bluetooth Modules Easytag
- Foolography Unleashed Bluetooth Geotagging Foolography
- Gisteq PhotoTrackr Plus for Nikon DSLR (Bluetooth) Gisteq
- Phottix Geo One GPS Phottix
- Nikon DSLR GPS Smack Down Results Terrywhite
- Review: Geotagging with Easytag GPS module (Nikon GP-1 compatible) Trick77
- Review: blueSLR Wireless Camera Control & GPS Geotagging Terrywhite
- Battery Packs Phottix
- Product search: Nikon D3100 Battery grip Google
- Eye-Fi Wi-Fi network: how it works Eye-fi
- PHOTTIX CLEON II Wired and Wireless shutter Phottix
- Flash Units Compatible with Nikon's CLS including Wireless Master Dpanswers
- Radio Triggers for Flash and Camera Dpanswers
- Knight For Nikon Flashgun I-TTL Trigger Pixel
- Radio Transmitters, Receivers and Accessories Pocketwizard
- The Nikon Creative Lighting System: Wireless, Remote, Through-the-Lens Metered (iTTL) Flash! Imaging Resource
- Guide to Nikon TTL Flashes photo.net
- Pixel Knight TR-331 and TR-332 TTL Radio Triggers Dpanswers
- Pixel Knight TR-331 Review Part III Inside the Viewfinder
- Digitalcameratracker: Nikon D3100 reviews, ratings, sample photos Digitalcameratracker
- "Nikon D3100". Digital Camera Views.
- Nikon Hacker: Camera Matrix
- Dxomark: Nikon D3200 and others: Compare cameras side by side
|Nikon DSLR and MILC timeline (comparison)|