Side by side comparison and review of Pentax K-3 and Nikon D7100 + AF-S DX 18-105mm VR. Compare design, sensors, zoom functions, batteries and other key specifications and features to simplify the choice of your perfect digital camera. Our goal is to make it easier for you to decide on the camera that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Product Type | Digital camera - SLR with movie recording | Digital camera - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | AF-S DX 18-105mm VR lens |
| Height | 10 cm | 10.65 cm |
| Width | 13.15 cm | 13.55 cm |
| Depth | 7.75 cm | 7.6 cm |
| Weight | 715 g | 675 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | - |
| Protection | Weatherproof, freezeproof, dust-resistant | Splashproof, dust-resistant |
| Optical Zoom | - | 5.8x |
| SENSOR | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Sensor Resolution | 23.35 Megapixel | 24.1 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 24,710,000 pixels | 24,710,000 pixels |
| Effective Sensor Resolution | 23,350,000 pixels | 24,100,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | APS-C (23.5 x 15.6 mm) |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), anti-aliasing simulator function | Self Cleaning Sensor Unit |
| Image Stabiliser | Optical (image sensor shift mechanism) | Optical |
| Built-in Optical Image Stabiliser | Yes | - |
| Sensors | Dust alert sensor, digital level metre | Digital level metre |
| PROCESSOR | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
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| Image Processor | PRIME III | EXPEED 3 |
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| LENS | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
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| Type | - | Zoom lens - 5.8x zoom - 18 - 105 mm - f/3.5-5.6 G Nikon AF-S DX ED VR |
|---|---|---|
| Focus Adjustment | - | Automatic, manual |
| Min Focus Distance | - | 45 cm |
| Max View Angle | - | 76 degree(s) |
| Zoom Adjustment | - | Manual |
| Lens Construction | - | 11 groups / 15 elements |
| Filter Size | - | 67 mm |
| Lens Mounting Type | Pentax K | Nikon F |
| Features | - | ED glass, Silent Wave Motor (SWM), aspherical lens, VR (Vibration Reduction) |
| FOCUSING | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Auto Focus | TTL phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 27 | 51 |
| AE/AF Control | - | Dynamic-area AF, 3D-tracking AF, Auto-area AF, Face-priority AF, Subject-tracking AF |
| Face Detection | Yes | Face-priority AF function |
| VIEWFINDER | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.95x | 0.94x |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -2 to +1 |
| Viewfinder Frames | - | Autofocus frame |
| Field of View Crop Factor | - | 1.5 |
| Interchangeable Focusing Screens | Yes | - |
| EXPOSURE & WHITE BALANCE | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| ISO (Max) | 51200 | 25600 |
|---|---|---|
| Native ISO | 100-51200 | - |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO auto, ISO 12800, ISO 25600, ISO 100-6400 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Centre-weighted, 3D colour matrix II, colour matrix II, spot (2.5%) |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, i-TTL program flash |
| Shooting Programs | - | Autumn colour, landscape, portrait mode, close-up, party/indoor, beach/snow, night portrait, PET, Children, food, night landscape, dawn/dusk, sports mode, sunset, candle, blossom |
| Special Effects | Soft, Slim, Pastel, fisheye, natural, bright, Vibrant, Sketch, monochrome, Muted, landscape, portrait, Water Colour, miniature, Cross Process, Retro, Colour Extract, Toy camera, starburst, High contrast, Colour Invert, Bleach Bypass, Posterisation, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold | Neutral, Vivid, monochrome, landscape, portrait, miniature, HDR, Silhouette, Colour sketch, Colour outline, Perspective Control, Selective Colour, High Key, Night Vision, Low Key, Image Overlay, Quick retouch |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) | Incandescent, fluorescent, cloudy, sunlight, Flash, shade, 2500K - 10000K |
| Shutter Type | Mechanical electronically-controlled | - |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 2, 3 or 5 steps | 5 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV steps |
| White Balance Bracketing | - | Yes |
| X-sync Speed | 1/180 sec | 1/250sec |
| Exposure Range | EV -3-20 (ISO 100) | EV 0-20 (ISO 100) |
| DISPLAY | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Type | 3.2" LCD display | 3.2" LCD display |
|---|---|---|
| Display Format | 1,037,000 pixels | 1,228,800 pixels |
| Display Form Factor | Built-in | Built-in |
| Display Features | Colour control | Display brightness control |
| FLASH | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Camera Flash | Pop-up flash | Pop-up flash |
|---|---|---|
| Guide Number (m / ISO 100) | 13 | 12 |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | Fill-in mode, FP flash (high-speed synchro), rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction |
| Red-Eye Reduction | Yes | Yes |
| Features | AF illuminator, flash +/- compensation, wireless off-camera control | AF illuminator, flash +/- compensation, wireless off-camera control |
| VIDEOGRAPHY / CAMCORDER | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Digital Video Format | AVI, MJPEG, H.264 | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW) + JPEG, DNG (RAW) | JPEG, RAW + JPEG, NEF (RAW) |
| Max Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | Sensitivity control | Sensitivity control |
| MEMORY | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Memory Card Slot | Dual SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card | - | 8 GB SDHC |
| Image Storage | RAW 6016 x 4000 JPEG 6016 x 4000 JPEG 4608 x 3072 JPEG 3072 x 2048 JPEG 1920 x 1280 |
6000 x 4000 - DX format 6000 x 3368 - DX-format in movie live view mode (16:9) 4800 x 3200 - 1.3x crop 4800 x 2696 - 1.3x crop in movie live view mode (16:9) 4494 x 3000 - DX format 4496 x 2528 - DX-format in movie live view mode (16:9) 3600 x 2400 - 1.3x crop 3600 x 2024 - 1.3x crop in movie live view mode (16:9) 2992 x 2000 - DX format 2992 x 1680 - DX-format in movie live view mode (16:9) 2400 x 1600 - 1.3x crop 2400 x 1344 - 1.3x crop in movie live view mode (16:9) |
| Video Capture | H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps H.264 - 1280 x 720 - 60 fps H.264 - 1280 x 720 - 50 fps H.264 - 1280 x 720 - 30 fps H.264 - 1280 x 720 - 25 fps H.264 - 1280 x 720 - 24 fps H.264 - 1920 x 1080 - 60 fps H.264 - 1920 x 1080 - 50 fps |
H.264 - 1920 x 1080 - 60 fps H.264 - 1920 x 1080 - 50 fps H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps H.264 - 1280 x 720 - 60 fps H.264 - 1280 x 720 - 50 fps |
| BATTERY AND CHARGING | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Nikon EN-EL15 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | Nikon EN-EL15 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 560 shots (50% flash usage) Photo shooting - 720 shots (flash off) Playback - 6.2 hours |
Photo shooting - 950 shots |
| CONNECTIONS | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Interface | HDMI, USB 3.0 | HDMI, USB 2.0 |
|---|---|---|
| Connectivity Features | - | Wi-Fi ready |
| Print Standard | Exif Print support | Direct print, DPOF support, Exif Print support, PictBridge support |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 HDMI output Microphone Headphones Remote control |
USB 2.0 HDMI output Remote control Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec, 20sec |
|---|---|---|
| Continuous Shooting Speed | 8.3 frames per second | 6 frames per second, 7 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | Audio recording, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, GPS ready, interval shooting mode, mirror lock, in-camera RAW processing, peripheral illumination correction, HDR image enhancement technology, Shade Correction, Eye-Fi Card Ready, NR Slow Shutter, High ISO NR, Dynamic Range Compensation, no anti-aliasing filter, Lens Distortion Correction, primary colour filter, Interval Movie Record, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, Flucard Ready | Date/time stamp, depth-of-field preview button, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, GPS ready, in-camera red-eye fix, interval shooting mode, highlight point display, in-camera film editing, Active D-Lighting technology, Dust Delete Data system, Scene Recognition System (SRS), automatic display brightness adjustment, Chromatic Aberration Compensation (CAC), Eye-Fi Card Ready, High ISO NR, no anti-aliasing filter, noise reduction over long exposures, Lens Distortion Correction |
| OTHERS | Pentax K-3 | Nikon D7100 + AF-S DX 18-105mm VR |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, USB cable, eyecup, shoe cap, battery grip terminal cover, sync terminal cover | Eyepiece cover, lens hood, battery charger, dust cap, body cap, lens cap, neck strap, carrying case, USB cable, eyecup, shoe cap |
|---|---|---|
| Software | Drivers & Utilities | Drivers & Utilities, Nikon ViewNX 2 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
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