Prices: |
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Manufacturer URL: |
Manufacturer website
|
Manufacturer website
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Predecessor: |
Pentax K-x
K-x vs K-r
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Successor: |
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Model Number: |
K-r |
A57 |
Alternate Model Number(s): |
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Camera Format: |
SLR |
SLR |
Currently Manufactured: |
No |
No |
Retail Price: |
$849.95 |
$799.99 |
Street Price: |
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|
Date Available: |
2010-10-15 |
2012-04-15 |
Tripod Mount: |
Yes |
Yes |
Weight: |
30.1 oz
(852 g)
includes batteries, kit lens
|
29.2 oz
(828 g)
includes batteries, kit lens
|
Size: |
4.9 x
3.8 x
2.7 in.
(125 x
97 x
68 mm)
|
5.2 x
3.8 x
3.2 in.
(132 x
98 x
81 mm)
|
Waterproof: |
No |
No |
Waterproof Depth: |
n/a |
n/a |
|
Sensor Type: |
CMOS |
CMOS |
Sensor Manufacturer: |
|
Sony |
Effective Megapixels: |
12.4 |
16.1 |
Sensor Format: |
APS-C |
APS-C |
Sensor size: |
369.72mm2 (23.7mm x 15.6mm) |
369.72mm2 (23.7mm x 15.6mm) |
Approximate Pixel Pitch: |
5.53 microns |
4.82 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 |
75 |
DxO Color Depth Score (bits): |
22.9 |
23.4 |
DxO Dynamic Range Score (evs): |
12.4 |
13.0 |
DxO Maximum Effective ISO Score (iso): |
750 |
785 |
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) |
4912 x 3264
(16.0 MP,
3:2), 4912 x 2760
(13.6 MP,
16:9), 3568 x 2368
(8.4 MP,
Other), 3568 x 2000
(7.1 MP,
16:9), 2448 x 1624
(4.0 MP,
Other), 2448 x 1376
(3.4 MP,
16:9), 12416 x 1856
(23.0 MP,
Other), 5536 x 2160
(12.0 MP,
Other), 8192 x 1856
(15.2 MP,
Other), 3872 x 2160
(8.4 MP,
Other), 7152 x 1080
(7.7 MP,
Other), 4912 x 1080
(5.3 MP,
Other), 1920 x 1080
(2.1 MP,
16:9) |
Image File Format: |
JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) |
JPEG, MPO, RAW (12-bit ARW 2.3), RAW+JPEG |
Continuous-mode frames/second: |
5.6 |
10.0 |
Can take movies: |
Yes |
Yes |
Movie Resolution: |
1280x720 (25)
640x480 (25)
|
1920x1080 (60p(PS)/60i(FX)/60i(FH)/24p(FX)/24p(FH))
1440x1080 (30p)
640x480 (30p)
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Movie File Format: |
AVI (Motion JPEG) |
AVCHD 2.0/MP4 (Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC) |
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 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
|
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 2x Precision, Up to 2x Clear Image Zoom, 1.4x (8.4MP) or 2.0x (4MP) Smart Zoom |
Auto Focus: |
Yes |
Yes |
Auto Focus Type: |
SAFOX IX 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 |
Auto Focus Assist Light? |
Yes |
Yes |
Manual Focus: |
Yes |
Yes |
Viewfinder: |
Optical / LCD
|
EVF / LCD
|
Viewfinder Type: |
SLR type; eye-level pentamirror, ~96% coverage, ~0.85x mag., -2.5 to +1.5 diopter |
EVF type; 1.1cm (0.43") 1.44M/1.25M-dot LCD (480K/418K-dot time-multiplexed RGB), 100% coverage, 1.04x/0.97x magnification, 23.1/25.2mm eyepoint, -4 to +3 diopter |
Focus Peaking: |
No |
Yes |
EVF Resolution: |
n/a
|
|
Viewfinder Magnification (35mm equivalent): |
0.57x |
0.69x |
Viewfinder Magnification (nominal/claimed): |
0.85x |
1.04x |
Eye-level Viewfinder: |
Yes |
Yes |
Rear Display: |
Yes |
Yes |
Rear Display Size (inches): |
3.0 |
3.0 |
Rear Display Resolution: |
921,000 dots
|
921,600 dots
(307,200 px)
|
Touchscreen: |
No |
No |
Articulating Screen: |
No |
Yes |
Tilt Swivel Screen: |
No |
|
Selfie Screen: |
No |
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Max Playback Zoom: |
16.0x |
13.6x |
Top Deck Display: |
No |
No |
|
Maximum ISO (native): |
12800 |
16000 |
Minimum ISO (native): |
200 |
100 |
ISO Settings: |
Auto: 200-12800 (1, 1/2, 1/3 EV steps), up to 1600 in Bulb, expandable to 100-25600; Manual: 200-12800 (1, 1/2, 1/3 EV steps), up to 1600 in Bulb, expandable to 100-25600 |
Auto (100-3200), 100 - 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, CTE, Manual |
Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (4), 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: |
+/- 3.0EV
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: |
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], Night Scene HDR [JPG]), Sensitivity Priority |
Portrait, SportsAction, Macro, Landscape, Sunset, Night scene, Hand-held Twilight (6 shot layering), Night Portrait; Sweep Panorama, 3D Sweep Panorama, Auto Portrait Framing, Picture Effect (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), Dynamic Range Optimizer (Off/Auto/Level), |
Self Timer: |
2 or 12 seconds |
2 or 10 seconds |
Time Lapse (intervalometer): |
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High Resolution Composite: |
No |
No |
Built-in Flash: |
Yes |
Yes |
Flash Modes: |
On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless |
Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off |
Flash Guide Number (ISO 100): |
12.0 m /
39.4 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 |
Hot shoe |
Built-In Wireless Flash Control: |
Full TTL exposure |
|
Usable Memory Types: |
SD / SDHC / SDXC |
MS PRO Duo / SD / SDHC / SDXC |
UHS Support: |
|
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Other Memory: |
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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: |
AVI (Motion JPEG) |
AVCHD 2.0/MP4 (Audio: Dolby Digital (AC-3)/MPEG-4 AAC-LC) |
Included Memory: |
No memory included |
|
Included Memory Type: |
|
|
Built-In Wi-Fi: |
No |
No |
NFC: |
No |
No |
Bluetooth: |
No |
No |
Built-In GPS: |
No |
No |
Microphone Jack: |
Yes |
No |
Headphone Jack: |
No |
No |
External Connections: |
USB 2.0 High Speed |
USB 2.0 High Speed |
PictBridge Compliant: |
No |
Yes |
DPOF Compliant: |
Yes |
Yes |
Remote Control: |
Yes |
Yes |
Remote Control Type: |
Optional IR |
Optional Wireless or Wired |
Connections (extended): |
IrSimple infrared data transfer |
Type-C Mini HDMI (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, 3.5mm External Stereo Micophone Jack, DC Input |
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Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): |
0.31 |
|
Cycle time for RAW shooting in single shot mode (seconds per frame): |
0.31 |
|
Buffer size for RAW shooting in single shot mode (frames): |
17 |
|
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): |
|
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Camera penalizes early shutter press? |
No |
|
JPEG shooting speed in burst mode (fps, max resolution): |
5.6 |
10.0 |
Buffer size for JPEG shooting in burst mode (frames, max resolution): |
30 |
25 |
RAW shooting speed in burst mode (fps): |
|
|
Buffer size for RAW shooting in burst mode (frames): |
|
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RAW+JPEG shooting speed in burst mode (fps): |
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Buffer Size for RAW+JPEG shooting in burst mode (frames): |
|
|
Shutter lag (full AF, wide/mid): |
0.11 seconds |
|
Shutter lag (full AF, tele): |
|
|
Shutter lag (full AF, live view - DSLR): |
|
|
Shutter lag (prefocused, live view - DSLR): |
|
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Shutter Lag (manual focus): |
0.098 seconds |
|
Shutter lag (full AF, with flash): |
0.15 seconds |
|
Shutter Lag (prefocused): |
0.097 seconds |
|
Shutter Lag (notes): |
OVF:
Full AF lag, Auto-Area: 0.118s
Live View:
Contrast-Detect AF: 1.049s
Phased-Detect AF: 1.197s
Prefocused: 0.335s |
|
Startup Time: |
0.3 seconds |
|
Play -> Record Time: |
0.3 seconds |
|
Flash cycle time, full power: |
|
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Battery Life, Stills (CIPA Rating Monitor/Live View): |
|
|
Battery Life, Still (CIPA Rating OVF/EVF): |
470 shots |
550 shots |
Battery Life, Video: |
|
|
Battery Form Factor: |
Proprietary D-LI109 |
Proprietary |
Usable Battery Types: |
Lithium-ion rechargeable or 4 AAs with D-BH109 |
NP-FM500H Lithium-ion rechargeable |
Batteries Included: |
1 x Proprietary D-LI109 Lithium-ion rechargeable
|
1 x Proprietary NP-FM500H Lithium-ion rechargeable
|
Battery Charger Included (dedicated charger or AC/USB adapter): |
Yes |
Yes |
Dedicated Battery Charger Included: |
|
Yes |
Internal Charging Supported: |
|
No |
Included Software: |
Software CD-ROM S-SW110 |
Sony Software CD-ROM |
OS Compatibility: |
Windows XP/Vista/7, MacOS-X 10.3+ |
Windows XP SP3/Vista SP2/7, Mac OS X (v.10.3 +) |
Notes & Features: |
Sensor-shift shake reduction, new 11-point SAFOX IX AF system with viewfinder focus indicators, 3-inch hi-res LCD, 6fps burst mode, 720p movies, dual power source (lithium-ion battery pack or 4 AAs with optional D-BH109 battery holder), improved in-camera HDR image capture including a Night Scene HDR mode. Available in Traditional Black, Classic White and Red. |
SteadyShot INSIDE Sensor-shift Image Stabilization (up to 4.5 EV correction), Full HD 1080p60 Video, Up to 12 fps Burst Mode (Tele-zoom Continuous Advance Priority AE), Enhanced Object Tracking AF, 2x Clear Image Digital Zoom, New Auto Portrait Framing, Tilting 921K-dot LCD, 1.44M-dot EVF. |