| 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 A68
A58 vs A68 |
| General | ||
| Model Number: | K-x | A58 |
| Alternate Model Number(s): | ||
| Camera Format: | SLR | SLR |
| Currently Manufactured: | No | No |
| Retail Price: | $649.95 | $600.00 |
| Street Price: | $701.76 | $598.00 |
| Date Available: | 2009-10-15 | 2013-04-15 |
| Tripod Mount: | Yes | Yes |
| Weight: |
27.9 oz
(791 g)
includes batteries, kit lens |
25.8 oz
(731 g)
includes batteries, kit lens |
| Size: |
4.8 x
3.6 x
2.7 in. (122 x 92 x 69 mm) |
5.1 x
3.8 x
3.1 in. (129 x 96 x 78 mm) |
| Waterproof: | No | No |
| Waterproof Depth: | n/a | n/a |
| Image Sensor | ||
| Sensor Type: | CMOS | CMOS |
| Sensor Manufacturer: | Sony | |
| Effective Megapixels: | 12.4 | 20.1 |
| Sensor Format: | APS-C | APS-C |
| Sensor size: | 369.72mm2 (23.7mm x 15.6mm) | 366.6mm2 (23.50mm x 15.60mm) |
| Approximate Pixel Pitch: | 5.53 microns | 4.31 microns |
| Focal Length Multiplier: | 1.5x | 1.5x |
| Aspect Ratio: | 3:2 | 3:2 |
| Color Filter Type: | RGBG | RGBG |
| Anti Aliasing Filter: | Fixed | Fixed |
| Self-Cleaning: | Yes | Yes |
| Sensor shift image stabilization: | Yes | Yes |
| On-Sensor Phase Detect: | No | No |
| DxO Sensor Score: | 72 | 74 |
| DxO Color Depth Score (bits): | 22.8 | 23.3 |
| DxO Dynamic Range Score (evs): | 12.5 | 12.5 |
| DxO Maximum Effective ISO Score (iso): | 811 | 753 |
| 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) |
5456 x 3632
(19.8 MP,
3:2), 5456 x 3064 (16.7 MP, 16:9), 3872 x 2576 (10.0 MP, 3:2), 3872 x 2176 (8.4 MP, 16:9), 2736 x 1824 (5.0 MP, 3:2), 2736 x 1536 (4.2 MP, 16:9), 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, RAW (12-bit ARW 2.3), RAW+JPEG |
| Continuous-mode frames/second: | 4.3 | 4.9 |
| Video Capture | ||
| Can take movies: | Yes | Yes |
| Movie Resolution: |
1280x720 (24)
640x416 (24) |
1920x1080 (60i or 24p (24/17Mbps))
1440x1080 (30p/12Mbps) 640x480 (30p/3Mbps) |
| Movie File Format: | AVCHD / MP4; Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC, stereo | |
| 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 Alpha (Minolta A) |
| Lens: | smc Pentax DA L 18-55mm f/3.5-5.6 AL | Sony 18-55mm f/3.5-5.6 DT SAM |
| Focal Length (35mm equivalent): | 27 - 84mm | 27 - 83mm |
| Focal Length (actual): | 18 - 55mm | 18 - 55mm |
| Zoom Ratio: | 3.00x | 3.06x |
| Aperture Range: | f/3.5 - 22 (W), f/5.6 - 38 (T) | f/3.5 - 22 (W), f/5.6 - 36 (T) |
| Integrated ND Filter: | No | No |
| Normal Focus Range: |
25 cm to Infinity 9.8 in to Infinity |
|
| Macro Focus Range: | ||
| Filter Thread: | 52.0mm | 55.0mm |
| Thread Type: | n/a | n/a |
| Optical Image Stabilization: | No | No |
| Digital Zoom: | No | Yes |
| Digital Zoom Values: | n/a | Up to 4x; up to 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 | Phase Detection: 15 points (3 points cross type); Wide (auto, 15 points), Zone, Spot, Local; Enhanced Object Tracking; Eye Start 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 type; 1/2-inch, 1.44M-dot OLED Tru-Finder, 100% coverage, 0.88x magnification (0.57x 35mm eq.), 26.5mm from the eyepiece lens / 23mm from the eyepiece frame eye point, -4.0 to +4.0 diopter |
| Focus Peaking: | No | Yes |
| EVF Resolution: | n/a | 1,440,000 dots |
| Viewfinder Magnification (35mm equivalent): | 0.57x | 0.57x |
| Viewfinder Magnification (nominal/claimed): | 0.85x | 0.88x |
| Display | ||
| Eye-level Viewfinder: | Yes | Yes |
| Rear Display: | Yes | Yes |
| Rear Display Size (inches): | 2.7 | 2.7 |
| Rear Display Resolution: | 230,000 dots | 460,800 dots (153,600 px) |
| Touchscreen: | No | No |
| Articulating Screen: | No | Yes |
| Tilt Swivel Screen: | No | No |
| Selfie Screen: | No | No |
| Max Playback Zoom: | 16.0x | 15.0x |
| Top Deck Display: | No | No |
| Exposure | ||
| Maximum ISO (native): | 6400 | 16000 |
| Minimum ISO (native): | 200 | 100 |
| ISO Settings: | Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 | Auto (100-3200), 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000; (Multi-frame NR mode up to ISO 25600) |
| 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, Flash, Custom, Color Temp./ Filter (2500-9900K with 15-step Magenta/Green compensation) |
| Shutter Speed Range: | 1/6000 - 30 sec | 1/4000 - 30 sec |
| Bulb Mode: | Yes | Yes |
| Exposure Compensation: | +/- 2.0EV in 0.3EV steps | +/- 3.0EV in 0.3EV steps |
| Metering Modes: | 16-segment Multi, Center-weighted, Spot | 1200-zone Evaluative, 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 | Scene Modes: Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night View, Handheld Twilight; Picture Effects: Posterization (Color, B/W), Pop Color, Retro Photo, Partial Color (R,G,B,Y), High Contrast Monochrome, Toy Camera, Soft High-key, Soft Focus, HDR Painting, Rich-tone Monochrome, Miniature; Sweep Panorama, Anti Motion Blur, Multi Frame Noise Reduction |
| Self Timer: | 2 or 12 seconds | 2 or 10 seconds |
| Time Lapse (intervalometer): | ||
| High Resolution Composite: | No | No |
| Flash | ||
| Built-in Flash: | Yes | Yes |
| Flash Modes: | On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless | Auto, Fill-flash, Slow Sync., Rear Sync., Hi-speed sync., Red-eye reduction (on/off selectable for Auto flash and fill-flash mode), Wireless, Off |
| Flash Guide Number (ISO 100): | 11.3 m / 37.1 ft. | 10.0 m / 32.8 ft. |
| Flash Range Description: | Depends on lens | Lens dependent |
| Max Flash Sync: | 1/180 | 1/160 |
| Flash Exposure Compensation: | -2 to +1 EV in 0.5EV steps | +/- 2.0 EV in 0.3EV steps |
| External Flash Connection: | Hot Shoe | Multi Interface Hot shoe |
| Built-In Wireless Flash Control: | Full TTL exposure | Full TTL exposure |
| Image Storage | ||
| Usable Memory Types: | SD / SDHC | MS PRO Duo / SD / SDHC / SDXC |
| UHS Support: | No UHS support | |
| Other Memory: | ||
| Dual Card Slots: | No | No |
| RAW Capture Support: | Yes | Yes |
| Uncompressed Format: | 12-bit RAW (.PEF, .DNG) | RAW (12-bit ARW 2.3), RAW+JPEG |
| Movie File Format: | AVCHD / MP4; Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC, stereo | |
| Included Memory: | No memory included | No memory included |
| Included Memory Type: | ||
| Connectivity | ||
| Built-In Wi-Fi: | No | No |
| NFC: | No | No |
| Bluetooth: | No | No |
| Built-In GPS: | No | No |
| Microphone Jack: | No | Yes |
| Headphone Jack: | No | No |
| External Connections: | USB 2.0 High Speed | USB 2.0 High Speed |
| PictBridge Compliant: | No | No |
| DPOF Compliant: | Yes | Yes |
| Remote Control: | Yes | Yes |
| Remote Control Type: | Optional IR | Optional wired RM-VPR1 |
| Connections (extended): | AC adapter available | Type-D Micro HDMI, DC Input, 3.5mm Stereo Micophone Jack, Multi/Micro USB (remote) |
| Performance Timing | ||
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): | 0.39 | 0.51 |
| Cycle time for RAW shooting in single shot mode (seconds per frame): | 0.43 | 0.55 |
| Buffer size for RAW shooting in single shot mode (frames): | 10 | 2 |
| Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): | 0.57 | |
| Camera penalizes early shutter press? | No | No |
| JPEG shooting speed in burst mode (fps, max resolution): | 4.3 | 4.9 |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): | 25 | 8 |
| RAW shooting speed in burst mode (fps): | 4.9 | |
| Buffer size for RAW shooting in burst mode (frames): | 6 | |
| RAW+JPEG shooting speed in burst mode (fps): | 4.9 | |
| Buffer Size for RAW+JPEG shooting in burst mode (frames): | 5 | |
| Shutter lag (full AF, wide/mid): | 0.10 seconds | 0.13 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 | 0.082 seconds |
| Shutter lag (full AF, with flash): | 0.23 seconds | 0.33 seconds |
| Shutter Lag (prefocused): | 0.082 seconds | 0.054 seconds |
| Shutter Lag (notes): | Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s | Full Autofocus Shutter Lag, Wide-area Mode = 0.139s |
| Startup Time: | 0.6 seconds | 1.9 seconds |
| Play -> Record Time: | 0.2 seconds | 1.1 seconds |
| Flash cycle time, full power: | 3.3 seconds | 2.1 seconds |
| Power | ||
| Battery Life, Stills (CIPA Rating Monitor/Live View): | 700 shots | |
| Battery Life, Still (CIPA Rating OVF/EVF): | 420 shots (NiMH AA) | 690 shots |
| Battery Life, Video: | ||
| Battery Form Factor: | 4 x AA | Proprietary |
| Usable Battery Types: | Lithium, Alkaline disposables; NiMH rechargeables | NP-FM500H Lithium-ion rechargeable |
| Batteries Included: | 4 x AA Alkaline disposables | 1 x Proprietary NP-FM500H Lithium-ion rechargeable |
| Battery Charger Included (dedicated charger or AC/USB adapter): | No | Yes |
| Dedicated Battery Charger Included: | Yes | |
| Internal Charging Supported: | No | |
| Software | ||
| Included Software: | CD-ROM | PlayMemories Home, Image Data Converter 4 |
| OS Compatibility: | Windows XP/Vista/7, MacOS-X 10.3+ | Windows XP SP3/Vista SP2/7 SP1/8; Mac OS X v10.5 or later. (Software is Windows only.) |
| 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. | New 20.1MP Exmor APS HD CMOS sensor, SteadyShot INSIDE image stabilization, 2.7" 406K-dot tilting LCD, OLED Tru-Finder EVF, 5fps full-resolution burst mode (up to 8fps in Tele-zoom Continuous Advance Priority AE mode), new Lock-on autofocus, Full HD 1080i60 movies, Multi Interface Hot Shoe, new area-specific noise reduction. U.S. availability and pricing TBD. |
