In depth comparison and review of Sony Alpha6600 ILCE-6600M + E 18-135mm OSS and Pentax K-3 Mark III. 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 | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | E 18-135mm OSS lens | Body only |
| Height | 6.69 cm | 10.35 cm |
| Width | 12 cm | 13.45 cm |
| Depth | 6.93 cm | 7.35 cm |
| Weight | 418 g | 735 g |
| Weight Details | Camera body only: 418 g Camera with battery and memory card: 503 g |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | Black | Silver |
| Protection | Dust-resistant, moisture-resistant | Weatherproof, dust-resistant |
| Digital Zoom | 4x | - |
| Optical Zoom | 7.5x | - |
| Navigation | - | GPS receiver |
| SENSOR | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Sensor Resolution | 24.2 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | Exmor CMOS | CMOS |
| Total Pixels | 25,000,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 24,200,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | 30 fps | 30 fps |
| Sensor Dust Reduction | Yes | - |
| Sensor Features | Dust Reduction (image sensor vibration), Anti-Dust coating | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Image Stabiliser | Optical (5-axis image sensor shift mechanism) | Optical SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Digital level metre | Digital level metre |
| PROCESSOR | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Image Processor | BIONZ X | - |
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| LENS | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Type | Zoom lens - 7.5x zoom - 18 - 135 mm - f/3.5-5.6 E OSS - zoom | - |
|---|---|---|
| Focal Length Equivalent to 35mm Camera | 27 - 202.5mm | - |
| Focus Adjustment | Automatic, manual | - |
| Min Focus Distance | 45 cm | - |
| Max View Angle | 76 degree(s) | - |
| Zoom Adjustment | Manual (by ring) | - |
| Lens Construction | 12 groups / 16 elements | - |
| Filter Size | 55 mm | - |
| Lens Mounting Type | Sony E-mount | Pentax K |
| Features | ED glass, aspherical lens, linear AF motor | - |
| FOCUSING | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | 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 | 425 | 101 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | - |
| AE/AF Control | - | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Eye Detect AF, Face Detection AF/AE, Self Portrait Auto Shutter | Yes |
| VIEWFINDER | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Viewfinder Type | Electronic - OLED | Optical - fixed eye-level pentaprism |
|---|---|---|
| Viewfinder Colour Support | Colour | - |
| Viewfinder Diagonal Size | 0.39" | - |
| Viewfinder Resolution | 2,359,296 pixels | - |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 1.07x | 1.05x |
| Optical Viewfinder Dioptric Correction Range | -4 to +3 | -4 to +1 |
| Field of View Crop Factor | 1.5 | - |
| Features | Viewfinder brightness control, colour temperature control | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| ISO (Max) | 102400 | 1600000 |
|---|---|---|
| Native ISO | 100-32000 | - |
| Extended ISO (Max) | 102400 | - |
| Extended ISO (Min) | 50 | - |
| Light Sensitivity | ISO 50, ISO 102400, ISO 51200, ISO 100-32000 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Multi-segment, centre-weighted, spot, average, highlight-weighted | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Metering Zones | 1200 | - |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | Dynamic Range Bracketing, Flash Exposure Bracketing, white balance bracketing | Depth of field bracketing, motion bracketing |
| Shooting Programs | Landscape, portrait mode, macro, night portrait, night scene, sports mode, sunset, handheld twilight, anti-motion blur | - |
| Special Effects | Black & White, Sepia, Neutral, Vivid, sunset, landscape, portrait, clear, deep, light, autumn leaves, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Rich-tone monochrome, Soft High-key, Night Scene, Standard, Style Box, Posterisation (B/W) | 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, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) | 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 | Mechanical electronically-controlled | 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 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3, 5, 9 steps in 1/3, 1/2, 2/3, 1, 2 or 3 EV steps | - |
| White Balance Bracketing | Yes | - |
| X-sync Speed | 1/160 sec | 1/200sec |
| Exposure Range | EV -2-20 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Type | 2.95" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 921,600 pixels | 1,620,000 pixels |
| Display Form Factor | Tilting | Built-in |
| Display Features | Display brightness control | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Digital Video Format | AVCHD, H.264, XAVC S | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Dolby Digital AC-3 (2 channel), Linear PCM | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Memory Card Slot | Memory Stick PRO Duo card, SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | 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 | 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 | No |
| Image Storage | 6000 x 4000 4240 x 2832 3008 x 2000 6000 x 3376 4240 x 2400 3008 x 1688 4000 x 4000 2832 x 2832 2000 x 2000 |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | 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 HD - 1920 x 1080 p - 120 fps - 100Mbps XAVC S HD - 1920 x 1080 p - 120 fps - 60Mbps XAVC S HD - 1920 x 1080 p - 60 fps - 50Mbps XAVC S HD - 1920 x 1080 p - 30 fps - 50Mbps XAVC S HD - 1920 x 1080 p - 60 fps - 25Mbps XAVC S HD - 1920 x 1080 p - 30 fps - 16Mbps AVCHD - 1920 x 1080 i - 60 fps - 24Mbps AVCHD - 1920 x 1080 i - 60 fps - 17Mbps XAVC S - 3840 x 2160 p - 25 fps - 100Mbps XAVC S - 3840 x 2160 p - 25 fps - 60Mbps XAVC S HD - 1920 x 1080 p - 100 fps - 100Mbps XAVC S HD - 1920 x 1080 p - 100 fps - 60Mbps XAVC S HD - 1920 x 1080 p - 50 fps - 50Mbps XAVC S HD - 1920 x 1080 p - 25 fps - 50Mbps XAVC S HD - 1920 x 1080 p - 50 fps - 25Mbps XAVC S HD - 1920 x 1080 p - 25 fps - 16Mbps AVCHD - 1920 x 1080 i - 50 fps - 24Mbps AVCHD - 1920 x 1080 i - 50 fps - 17Mbps |
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 | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Battery Type | Sony NP-FZ100 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Sony NP-FZ100 Li-ion rechargeable battery - 2280 mAh (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 720 shots (EVF on) Photo shooting - 810 shots (LCD Monitor on) Video recording - 2.33 shots (EVF on) Video recording - 2.5 shots (LCD Monitor on) |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Interface | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication), Bluetooth 4.1 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | Remote control via mobile devices, remote live view | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | DPOF support, Exif Print support, PRINT Image Matching | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 2.0 (5 pin Micro-USB Type B) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Remote control Headphones |
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 | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Self-Timer Delay | 10 sec, 2sec, 5 sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 8 frames per second, 3 frames per second, 6 frames per second, 11 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | Auto HDR mode | Auto HDR mode |
| Additional Features | Built-in speaker, sharpness control, histogram display, saturation control, shadow point display, interval shooting mode, highlight point display, contrast control, Dynamic Range Optimizer, built-in help guide, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), Touch Shutter technology, fast motion recording, Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, high ISO speed noise reduction, silent shooting, High Dynamic Range (HDR), S-Log2 gamma setting, slow motion recording, peripheral shading correction, Object Tracking, S-Log3 gamma setting | 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 | Sony Alpha6600 ILCE-6600M + E 18-135mm OSS | Pentax K-3 Mark III |
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| Included Accessories | Eyepiece cover, lens hood, dust cap, body cap, lens cap, shoulder strap, AC power adaptor, micro-USB cable, hot shoe cap | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | - | 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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