In depth comparison and review of Pentax K-3 and Sony Alpha9 ILCE-9. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.
| DESIGN AND DIMENSIONS | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Product Type | Digital camera - SLR with movie recording | Digital camera - 4K - mirrorless system |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 10 cm | 9.56 cm |
| Width | 13.15 cm | 12.69 cm |
| Depth | 7.75 cm | 6.3 cm |
| Weight | 715 g | 673 g |
| Weight Details | - | Camera with battery and memory card: 673 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | Black |
| Protection | Weatherproof, freezeproof, dust-resistant | Dust-resistant, moisture-resistant |
| Digital Zoom | - | 4x |
| SENSOR | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Sensor Resolution | 23.35 Megapixel | 24.2 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | Exmor RS CMOS |
| Total Pixels | 24,710,000 pixels | 28,300,000 pixels |
| Effective Sensor Resolution | 23,350,000 pixels | 24,200,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | Full Frame (35.6 x 23.8 mm) |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), anti-aliasing simulator function | Dust Reduction (image sensor vibration), Anti-Dust coating, APS-C compatible mode |
| Image Stabiliser | Optical (image sensor shift mechanism) | Optical (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Dust alert sensor, digital level metre | Digital level metre |
| PROCESSOR | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Image Processor | PRIME III | BIONZ X |
|---|
| LENS | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Lens Mounting Type | Pentax K | Sony E-mount |
|---|
| FOCUSING | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Auto Focus | TTL phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 27 | 693 |
| Auto Focus Features | - | Focus Peaking function |
| AE/AF Control | - | Touch Area AF, Eye detection AF, Predictive AI Servo AF, Zone AF |
| Face Detection | Yes | Yes |
| VIEWFINDER | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | - | 3,686,400 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.95x | 0.78x |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -4 to +3 |
| Field of View Crop Factor | - | 1.0 |
| Interchangeable Focusing Screens | Yes | - |
| Features | - | Viewfinder brightness control, colour temperature control |
| EXPOSURE & WHITE BALANCE | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| ISO (Max) | 51200 | 204800 |
|---|---|---|
| Native ISO | 100-51200 | 100-51200 |
| Extended ISO (Max) | - | 204800 |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO 50, ISO auto, ISO 102400, ISO 204800, ISO 100-51200 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot, average, highlight-weighted |
| Exposure Metering Zones | - | 1200 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing, white balance bracketing |
| 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 | Black & White, Sepia, Neutral, Vivid, sunset, landscape, portrait, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Soft High-key, Night Scene, Standard, Style Box |
| 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, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) |
| Shutter Type | Mechanical electronically-controlled | Mechanical |
| Max Shutter Speed | 1/8000 sec | 1/32000 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 | 3, 5, 9 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 -3-20 (ISO 100) |
| DISPLAY | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Type | 3.2" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 1,037,000 pixels | 1,440,000 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | Colour control | Display brightness control |
| FLASH | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Camera Flash | Pop-up flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 13 | - |
| 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 | AF illuminator |
| VIDEOGRAPHY / CAMCORDER | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Digital Video Format | AVI, MJPEG, H.264 | AVCHD, H.264, XAVC S |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW) + JPEG, DNG (RAW) | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Audio Signal Format | - | Dolby Digital AC-3 (2 channel), Linear PCM, AAC |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | Sensitivity control | - |
| MEMORY | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Memory Card Slot | Dual SD card | SD card, Memory Stick PRO Duo card / 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, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card |
| Memory Card Included | - | No |
| 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 3936 x 2624 3008 x 2000 1968 x 1312 6000 x 3376 3936 x 2216 3008 x 1688 1968 x 1112 |
| 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 |
XAVC S - 3840 x 2160 p - 30 fps - 100Mbps XAVC S - 3840 x 2160 p - 24 fps - 100Mbps XAVC S - 3840 x 2160 p - 30 fps - 60Mbps XAVC S - 3840 x 2160 p - 24 fps - 60Mbps XAVC S - 1920 x 1080 p - 120 fps - 100Mbps XAVC S - 1920 x 1080 p - 120 fps - 60Mbps XAVC S - 1920 x 1080 p - 60 fps - 50Mbps XAVC S - 1920 x 1080 p - 30 fps - 50Mbps XAVC S - 1920 x 1080 p - 24 fps - 50Mbps AVCHD - 1920 x 1080 p - 60 fps - 28Mbps AVCHD - 1920 x 1080 i - 60 fps - 24Mbps AVCHD - 1920 x 1080 i - 60 fps - 17Mbps AVCHD - 1920 x 1080 p - 24 fps - 24Mbps AVCHD - 1920 x 1080 p - 24 fps - 17Mbps H.264 - 1920 x 1080 p - 60 fps - 28Mbps H.264 - 1920 x 1080 p - 30 fps - 16Mbps H.264 - 1280 x 720 p - 30 fps - 6Mbps XAVC S - 3840 x 2160 p - 25 fps - 100Mbps XAVC S - 3840 x 2160 p - 25 fps - 60Mbps XAVC S - 1920 x 1080 p - 100 fps - 100Mbps XAVC S - 1920 x 1080 p - 100 fps - 60Mbps XAVC S - 1920 x 1080 p - 50 fps - 50Mbps XAVC S - 1920 x 1080 p - 25 fps - 50Mbps AVCHD - 1920 x 1080 p - 50 fps - 28Mbps AVCHD - 1920 x 1080 i - 50 fps - 24Mbps AVCHD - 1920 x 1080 i - 50 fps - 17Mbps AVCHD - 1920 x 1080 p - 25 fps - 24Mbps AVCHD - 1920 x 1080 p - 25 fps - 17Mbps H.264 - 1920 x 1080 p - 50 fps - 28Mbps H.264 - 1920 x 1080 p - 25 fps - 16Mbps H.264 - 1280 x 720 p - 25 fps - 6Mbps |
| BATTERY AND CHARGING | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Sony NP-FZ100 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) |
| Battery Life | Photo shooting - 560 shots (50% flash usage) Photo shooting - 720 shots (flash off) Playback - 6.2 hours |
Photo shooting - 650 shots (LCD Monitor on) Photo shooting - 480 shots (LCD Monitor off) |
| CONNECTIONS | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Interface | HDMI, USB 3.0 | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 |
|---|---|---|
| Print Standard | Exif Print support | DPOF support, Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 HDMI output Microphone Headphones Remote control |
USB 2.0 HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Network (RJ-45) |
| FEATURES | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 8.3 frames per second | 20 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 | Built-in speaker, sharpness control, digital image rotation, histogram display, saturation control, takes photos while film recording, contrast control, Dynamic Range Optimizer, built-in help guide, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, high ISO speed noise reduction, silent shooting, BRAVIA Sync function, PhotoTV HD, simultaneous multi-format recording, peripheral shading correction |
| OTHERS | Pentax K-3 | Sony Alpha9 ILCE-9 |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, USB cable, eyecup, shoe cap, battery grip terminal cover, sync terminal cover | Eyepiece cover, body cap, shoulder strap, AC power adaptor, USB cable, shoe cap |
|---|---|---|
| Software | Drivers & Utilities | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
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