| Links | ||
|---|---|---|
| Prices: | Compare Prices | |
| Manufacturer URL: | Manufacturer website | Manufacturer website |
| Predecessor: |
Pentax K2000
K2000 vs K-x |
|
| Successor: |
Pentax K-r
K-x vs K-r |
Sony A7S II
A7S III vs A7S II |
| General | ||
| Model Number: | K-x | A7S III |
| Alternate Model Number(s): | ILCE-7SM3 | |
| Camera Format: | SLR | Compact System Camera |
| Currently Manufactured: | No | Yes |
| Retail Price: | $649.95 | $3499.99 |
| Street Price: | $701.76 | $3,348.00 |
| Date Available: | 2009-10-15 | 2020-09-01 |
| Tripod Mount: | Yes | Yes |
| Weight: |
27.9 oz
(791 g)
includes batteries, kit lens |
21.7 oz
(614 g)
includes batteries |
| Size: |
4.8 x
3.6 x
2.7 in. (122 x 92 x 69 mm) |
5.1 x
3.8 x
2.7 in. (129 x 97 x 70 mm) |
| Waterproof: | No | No |
| Waterproof Depth: | n/a | n/a |
| Image Sensor | ||
| Sensor Type: | CMOS | CMOS |
| Sensor Manufacturer: | Sony | |
| Effective Megapixels: | 12.4 | 12.1 |
| Sensor Format: | APS-C | 35mm |
| Sensor size: | 369.72mm2 (23.7mm x 15.6mm) | 847.28mm2 (35.60mm x 23.80mm) |
| Approximate Pixel Pitch: | 5.53 microns | 8.40 microns |
| Focal Length Multiplier: | 1.5x | 1.0x |
| Aspect Ratio: | 3:2 | 3:2 |
| Color Filter Type: | RGBG | RGBG |
| Anti Aliasing Filter: | Fixed | |
| Self-Cleaning: | Yes | Yes |
| Sensor shift image stabilization: | Yes | Yes |
| On-Sensor Phase Detect: | No | No |
| DxO Sensor Score: | 72 | |
| DxO Color Depth Score (bits): | 22.8 | |
| DxO Dynamic Range Score (evs): | 12.5 | |
| DxO Maximum Effective ISO Score (iso): | 811 | |
| Image Capture | ||
| Image Resolution: |
4288 x 2848
(12.2 MP,
Other), 3936 x 2624 (10.3 MP, 3:2), 3072 x 2048 (6.3 MP, 3:2), 1728 x 1152 (2.0 MP, 3:2) |
4240 x 2832
(12.0 MP,
3:2), 4240 x 2384 (10.1 MP, 16:9), 2768 x 1848 (5.1 MP, 3:2), 2768 x 1560 (4.3 MP, Other), 2128 x 1416 (3.0 MP, 3:2), 2128 x 1200 (2.6 MP, Other), 12416 x 1856 (23.0 MP, Other), 8192 x 1856 (15.2 MP, Other), 2160 x 5536 (12.0 MP, Other), 2160 x 3872 (8.4 MP, Other) |
| Image File Format: | JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) | JPEG (8-bit), HEIF (10-bit), RAW (14-bit ARW 2.3), RAW+JPEG, RAW+HEIF |
| Continuous-mode frames/second: | 4.3 | n/a |
| Video Capture | ||
| Can take movies: | Yes | Yes |
| Movie Resolution: |
1280x720 (24)
640x416 (24) |
4264x2408 (60p)
3840x2160 (120p/60p/50p/30p/25p/24p) 1920x1080 (240p/120p/60p/50p/30p/25p/24p) |
| Movie File Format: | XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-I (All-Intra, H.264 MP4) | |
| Composite Video Out: | Yes | No |
| NTSC/PAL Switchable Video: | Yes | n/a |
| Video Usable as Viewfinder: | No | n/a |
| HD Video Out: | No | Yes |
| HD Video Connection: | HDMI | |
| Lens & Optics | ||
| Lens Mount: | Pentax K (KA/KAF/KAF2/3) | Sony E |
| Lens: | smc Pentax DA L 18-55mm f/3.5-5.6 AL | n/a |
| Focal Length (35mm equivalent): | 27 - 84mm | |
| Focal Length (actual): | 18 - 55mm | |
| Zoom Ratio: | 3.00x | |
| Aperture Range: | f/3.5 - 22 (W), f/5.6 - 38 (T) | |
| Integrated ND Filter: | No | No |
| Normal Focus Range: | ||
| Macro Focus Range: | ||
| Filter Thread: | 52.0mm | n/a |
| Thread Type: | n/a | n/a |
| Optical Image Stabilization: | No | No |
| Digital Zoom: | No | Yes |
| Digital Zoom Values: | n/a | Up to 4x; 2x Clear Image Digital Zoom |
| Auto Focus | ||
| Auto Focus: | Yes | Yes |
| Auto Focus Type: | SAFOX VIII TTL phase-detect 11 point (9 cross) AF: 11 pt auto, 5 pt auto, AF pt select, center/spot | Fast Hybrid 4D AF: 759 points (PDAF), 425 points (contrast-detection AF); Wide (759 points (PDAF), 425 points (CDAF))/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot/Tracking (Wide/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot); Touch AF |
| Auto Focus Assist Light? | Yes | Yes |
| Manual Focus: | Yes | Yes |
| Viewfinder | ||
| Viewfinder: | Optical / LCD | EVF / LCD |
| Viewfinder Type: | SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter | EVF: 0.64" 9.44M-dot QXGA color OLED, 100% coverage, 0.90x magnification, -4.0 to +3.0 diopter, 25mm eyepoint from the eyepiece lens |
| Focus Peaking: | No | Yes |
| EVF Resolution: | n/a | 9,437,184 dots (3,145,728 pixels) |
| Viewfinder Magnification (35mm equivalent): | 0.57x | 0.90x |
| Viewfinder Magnification (nominal/claimed): | 0.85x | 0.90x |
| Display | ||
| Eye-level Viewfinder: | Yes | Yes |
| Rear Display: | Yes | Yes |
| Rear Display Size (inches): | 2.7 | 3.0 |
| Rear Display Resolution: | 230,000 dots | 1,440,000 dots (480,000 px) |
| Touchscreen: | No | Yes |
| Articulating Screen: | No | Yes |
| Tilt Swivel Screen: | No | Yes |
| Selfie Screen: | No | Yes |
| Max Playback Zoom: | 16.0x | 13.3x |
| Top Deck Display: | No | No |
| Exposure | ||
| Maximum ISO (native): | 6400 | 102400 |
| Minimum ISO (native): | 200 | 80 |
| ISO Settings: | Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 | Auto, 80 - 102,400, expandable to 40 - 409,600 |
| Auto ISO Mode: | Yes | Yes |
| White Balance Settings: | Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom | Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (4 settings), Flash, Custom, Color Temp./ Filter (2500-9900K with 57-step Magenta/Green and 29-step Amber/Blue compensation), Underwater |
| Shutter Speed Range: | 1/6000 - 30 sec | 1/8000 - 30 sec |
| Bulb Mode: | Yes | Yes |
| Exposure Compensation: | +/- 2.0EV in 0.3EV steps | +/- 5.0EV in 0.3EV steps |
| Metering Modes: | 16-segment Multi, Center-weighted, Spot | 1200-zone Evaluative Multi-segment, Center-weighted, Spot |
| Program Auto Exposure: | Yes | Yes |
| Aperture Priority: | Yes | Yes |
| Shutter Priority: | Yes | Yes |
| Full Manual Exposure: | Yes | Yes |
| Creative Exposure Modes: | Auto Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Standard Flash Off), Scene (Night Scene, Surf & Snow, Food, Sunset, Kids, Pet, Candlelight, Museum, Stage Lighting [JPG], Night Snap [JPG]), Sensitivity Priority | 3 Custom Settings; Creative Look; Slow & Quick Motion; HDR: Auto Exposure Difference, Exposure difference Level (1-6 EV at 1.0 EV step) |
| Self Timer: | 2 or 12 seconds | 2, 5, 10; 3/5 shots after 2/5/10 seconds |
| Time Lapse (intervalometer): | ||
| High Resolution Composite: | No | No |
| Flash | ||
| Built-in Flash: | Yes | No |
| Flash Modes: | On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless | Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync |
| Flash Guide Number (ISO 100): | 11.3 m / 37.1 ft. | n/a |
| Flash Range Description: | Depends on lens | n/a |
| Max Flash Sync: | 1/180 | 1/250 |
| Flash Exposure Compensation: | -2 to +1 EV in 0.5EV steps | +/- 3.0 EV in 0.3EV steps |
| External Flash Connection: | Hot Shoe | Enhanced Multi Interface Hot Shoe, Sync Terminal |
| Built-In Wireless Flash Control: | Full TTL exposure | No |
| Image Storage | ||
| Usable Memory Types: | SD / SDHC | MS PRO Duo / SD / SDHC / SDXC / CFexpress |
| UHS Support: | UHS-I | |
| Other Memory: | 2x CFexpress Type A+SD UHS-II | |
| Dual Card Slots: | No | Yes |
| RAW Capture Support: | Yes | Yes |
| Uncompressed Format: | 12-bit RAW (.PEF, .DNG) | RAW (14-bit ARW 2.3), RAW+JPEG, RAW+HEIF |
| Movie File Format: | XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-I (All-Intra, H.264 MP4) | |
| Included Memory: | No memory included | No memory included |
| Included Memory Type: | ||
| Connectivity | ||
| Built-In Wi-Fi: | No | Yes |
| NFC: | No | Yes |
| Bluetooth: | No | Yes |
| Built-In GPS: | No | No |
| Microphone Jack: | No | Yes |
| Headphone Jack: | No | Yes |
| External Connections: | USB 2.0 High Speed | USB 2.0 High Speed,USB 3.0 Super Speed,Bluetooth,WiFi |
| PictBridge Compliant: | No | No |
| DPOF Compliant: | Yes | Yes |
| Remote Control: | Yes | Yes |
| Remote Control Type: | Optional IR | Yes, via USB or Wi-Fi |
| Connections (extended): | AC adapter available | USB-C (USB 3.2 Gen 1, 5Gbps), Multi-Terminal Micro USB (with remote support), Type-A HDMI, 3.5mm Microphone and Headphone jacks |
| Performance Timing | ||
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): | 0.39 | |
| Cycle time for RAW shooting in single shot mode (seconds per frame): | 0.43 | |
| Buffer size for RAW shooting in single shot mode (frames): | 10 | |
| Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): | ||
| Camera penalizes early shutter press? | No | |
| JPEG shooting speed in burst mode (fps, max resolution): | 4.3 | |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): | 25 | |
| RAW shooting speed in burst mode (fps): | ||
| Buffer size for RAW shooting in burst mode (frames): | ||
| RAW+JPEG shooting speed in burst mode (fps): | ||
| Buffer Size for RAW+JPEG shooting in burst mode (frames): | ||
| Shutter lag (full AF, wide/mid): | 0.10 seconds | |
| Shutter lag (full AF, tele): | ||
| Shutter lag (full AF, live view - DSLR): | ||
| Shutter lag (prefocused, live view - DSLR): | ||
| Shutter Lag (manual focus): | 0.082 seconds | |
| Shutter lag (full AF, with flash): | 0.23 seconds | |
| Shutter Lag (prefocused): | 0.082 seconds | |
| Shutter Lag (notes): | Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s | |
| Startup Time: | 0.6 seconds | |
| Play -> Record Time: | 0.2 seconds | |
| Flash cycle time, full power: | 3.3 seconds | |
| Power | ||
| Battery Life, Stills (CIPA Rating Monitor/Live View): | ||
| Battery Life, Still (CIPA Rating OVF/EVF): | 420 shots (NiMH AA) | |
| Battery Life, Video: | ||
| Battery Form Factor: | 4 x AA | Proprietary |
| Usable Battery Types: | Lithium, Alkaline disposables; NiMH rechargeables | NP-FZ100 Lithium-ion rechargeable |
| Batteries Included: | 4 x AA Alkaline disposables | 1 x Proprietary NP-FZ100 Lithium-ion rechargeable |
| Battery Charger Included (dedicated charger or AC/USB adapter): | No | Yes |
| Dedicated Battery Charger Included: | Yes | |
| Internal Charging Supported: | Yes | |
| Software | ||
| Included Software: | CD-ROM | Capture One Express (for Sony) free download |
| OS Compatibility: | Windows XP/Vista/7, MacOS-X 10.3+ | Windows, Mac OS X |
| Miscellaneous | ||
| Notes & Features: | Sensor-shift shake reduction, 720p HD video capture, Live View with face detection. Available in black or white. Limited edition colors of red and navy will become available at select locations to be announced. | |
