Detailed comparison and review of Nikon D3100 + AF-S VR DX 18-55mm and Pentax K-3 Mark III. With our comprehensive overview, you can simply compare design, sensors, proximity characteristics, memory capacities, but also other key features of both cameras and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the camera that best fits your needs and expectations.
| DESIGN AND DIMENSIONS | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Product Type | Digital camera - 1080p - SLR with Live View mode, movie recording | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | AF-S VR DX 18-55mm lens | Body only |
| Height | 9.6 cm | 10.35 cm |
| Width | 12.4 cm | 13.45 cm |
| Depth | 7.5 cm | 7.35 cm |
| Weight | 455 g | 735 g |
| Weight Details | - | Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | - | Magnesium alloy |
| Enclosure Colour | Black | Red | Black | Silver |
| Protection | - | Weatherproof, dust-resistant |
| Optical Zoom | 3x | - |
| Navigation | - | GPS receiver |
| SENSOR | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Sensor Resolution | 14.2 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 14,800,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 14,200,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | APS-C (23.1 x 15.4 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | Yes | - |
| Sensor Features | Air flow control system, Self Cleaning Sensor Unit | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Image Stabiliser | Optical | Optical SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| PROCESSOR | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Image Processor | EXPEED 2 | - |
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| LENS | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Type | Zoom lens - 3x zoom - 18 - 55 mm - f/3.5-5.6 G Nikon AF-S DX VR | - |
|---|---|---|
| Focal Length Equivalent to 35mm Camera | 27 - 82.5mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 28 cm | - |
| Max View Angle | 76 degree(s) | - |
| Zoom Adjustment | Manual | - |
| Lens Construction | 8 groups / 11 elements | - |
| Filter Size | 52 mm | - |
| Lens Mounting Type | Nikon F | Pentax K |
| Features | Silent Wave Motor (SWM), aspherical lens, VR (Vibration Reduction) | - |
| FOCUSING | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Auto Focus | TTL contrast and phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 11 | 101 |
| AE/AF Control | - | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face-priority AF function | Yes |
| VIEWFINDER | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Viewfinder Type | Optical - eye-level penta-dach mirror | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | 95% | 100% |
| Optical Viewfinder Magnification | 0.8x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -1.7 to +0.5 | -4 to +1 |
| Field of View Crop Factor | 1.5 | - |
| Features | - | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| ISO (Max) | 12800 | 1600000 |
|---|---|---|
| Light Sensitivity | ISO 6400, ISO auto, ISO 100-3200, ISO 12800 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Centre-weighted, spot, 3D colour matrix II | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 420 | - |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, i-TTL program flash | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | - | Depth of field bracketing, motion bracketing |
| Shooting Programs | Landscape, portrait mode, close-up, night portrait, Children, sports mode | - |
| Special Effects | Neutral, Vivid, monochrome, landscape, portrait | Soft, Slim, fisheye, natural, bright, Vibrant, monochrome, Muted, Flat, landscape, portrait, miniature, Cross Process, Retro, Colour Extract, Toy camera, High contrast, Colour Invert, Bleach Bypass, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold, Colour replace, Grainy Monochrome |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, cloudy, sunlight, Flash, shade | Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) |
| Shutter Type | - | Electronic, mechanical electronically-controlled |
| Max Shutter Speed | 1/4000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| X-sync Speed | 1/200sec | 1/200sec |
| Exposure Range | EV 0-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Type | 3" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 230,000 pixels | 1,620,000 pixels |
| Display Form Factor | Built-in | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control, night vision LCD display |
| FLASH | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Camera Flash | Pop-up flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 12 | - |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | - |
| Red-Eye Reduction | Yes | - |
| Features | AF illuminator, flash +/- compensation, wireless off-camera control | - |
| VIDEOGRAPHY / CAMCORDER | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Digital Video Format | MOV | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW + JPEG, NEF (RAW) | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Memory Card Slot | SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card |
| Memory Card Included | - | No |
| Included Memory Card | 8 GB SDHC | - |
| Image Storage | 4608 x 3072 3456 x 2304 2304 x 1536 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | MOV - 1920 x 1080 - 24 fps MOV - 1280 x 720 - 30 fps MOV - 1280 x 720 - 25 fps MOV - 1280 x 720 - 24 fps MOV - 640 x 424 - 24 fps |
H.264 - 3840 x 2160 p - 30 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 1920 x 1080 p - 60 fps H.264 - 1920 x 1080 p - 30 fps H.264 - 1920 x 1080 p - 24 fps |
| BATTERY AND CHARGING | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Battery Type | Nikon EN-EL14 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Nikon EN-EL14 Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 550 shots | Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Interface | Composite video/audio, HDMI, USB 2.0 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | Direct print, DPOF support, Exif Print support, PictBridge support | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 HDMI output Composite video/audio output |
USB 3.2 Gen 1 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control (sub-mini phone 2.5 mm) |
| FEATURES | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | - | Auto HDR mode |
| Additional Features | Date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, in-camera red-eye removal, cropping an image, GPS ready, LCD live view mode, highlight point display, Active D-Lighting technology, face detection, built-in help guide, Scene Recognition System (SRS), in-camera RAW processing, text input to Exif header | Audio recording, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, horizon correction, NR Slow Shutter, High ISO NR, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, diffraction correction, Pixel Shift Resolution technology, colour fringe correction, multiple exposure capture, GPS stamp, D-range correction |
| OTHERS | Nikon D3100 + AF-S VR DX 18-55mm | Pentax K-3 Mark III |
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| Included Accessories | Eyepiece cover, battery charger, dust cap, body cap, lens cap, neck strap, carrying case, tripod, eyecup, shoe cap | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | Nikon ViewNX 2 | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | - | Limited warranty - 1 year |
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