Pentax K-S1 DSLR Camera (Body) - Black

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product overview
product overview
  • 20MP APS-C CMOS Sensor
  • PRIME M II Image Processor
  • 3.0 inch 921k-Dot TFT LCD Monitor
  • Full HD 1080p Video Recording at 30 fps
Image ProcessorImage Processor
CMOS SensorCMOS Sensor
View FinderView Finder

Incorporating stylish design elements such as LED indicator lights on the grip and lighted camera controls, the black Pentax K-S1 DSLR Camera provides users with a compact, intuitive camera kit. At the core of the K-S1's performance is a 20-megapixel APS-C CMOS sensor and the PRIME M II Image Processing Engine which enables the capture of highly detailed images with accurate color rendition at ISO speeds up to 51200.

Inside the camera body is a variety of technologies, including a sensor-shift Shake Reduction system for capturing sharp images in less than ideal shooting conditions. The sensor also lacks an anti-aliasing filter, but can be put into a simulation mode that will recreate the effects of one for use in certain situations.

The K-S1 is very responsive with the SAFOX IXi+ 11-point autofocus sensor and the ability to capture 5.4 frames per second. This system also features 9 cross-type points in the center for increased performance. Along with fast focusing, the camera can record full HD 1080p video at up to 30 fps. This video, along with photo review and settings, is seen on the bright 3.0 inch 921k-dot TFT LCD monitor.

Additional features of the K-S1 include in-body RAW file development and HDR shooting. Also, there are enhances creative modes and filters for giving a unique look to your shots. The camera records all these images to SD cards and is compatible with both Eye-Fi and FLU cards for adding more capabilities to the camera.


20MP APS-C CMOS Sensor and PRIME M II Image Processor
The combination of the 20-megapixel APS-C CMOS sensor and PRIME M II image processor is able to produce high resolution imagery with notable quality and low-light sensitivity to ISO 51200. The speed afforded by the image processor enables continuous full-resolution shooting up to 5.4 fps, a maximum shutter speed of 1/6000th of a second, and also supports full HD 1080p video capture.
SAFOX IXi+ Autofocus System
The SAFOX IXi+ AF system utilizes 11 focus points, including nine cross-type sensors, to quickly and accurately acquire focus using a phase-detection method. With the inclusion of an AF-assist lamp and a diffraction lens, precise focusing is possible in a wide variety of lighting conditions using single-shot or continuous focusing modes. This system also features a sensitivity range of -1 to 18 EV at ISO 100.
In-Camera Shake Reduction Image Stabilization
The Pentax sensor-shift type shake reduction image stabilization helps to minimize the appearance of camera shake when working with longer lenses in dim lighting conditions by up to the equivalent of three to four shutter speed steps. This helps to produce sharper overall imagery regardless of the lens in use.
Full HD 1080p Video
In addition to high quality still imagery, the K-S1 also supports full HD video recording up to 1080p at 30 fps. Other frame rates available include 1080p at 24 fps and HD 720p at 60, 50, 30, 25, and 24 fps. Video is recorded in the high quality H.264 AVC/MPEG-4 format and can be saved in the Internet-friendly .MOV file format. Sound can be recorded along with the video using the built-in monaural microphone.
Other Camera Features
  • A 3.0" 921k-dot LCD monitor is available for live view monitoring, image playback, and menu navigation.
  • Pentax K lens mount enables the use of a wide variety of both past and present K-mount lenses as well as compatibility with a variety of lens mount adapters.
  • Enhanced creative modes, scene modes, filters, and auto picture modes allow you to easily modify and adjust the overall aesthetic appearance of imagery in-camera.
  • Eye-Fi and FLU memory card compatibility for wirelessly transferring imagery directly from the camera and adjusting settings remotely.
  • Built-in pop-up flash with a guide no. of 32.8' at ISO 100 provides additional illumination for low-light settings and covers focal lengths as wide as 28mm.
  • RAW image processing is available in camera in order to quickly and easily convert images an Internet-friendly JPEG file format.
  • In-camera HDR shooting works to effectively expand the dynamic range of an image and achieve greater shadow and highlight detail.


  • MPN - 6414
  • GTIN - 027075278424
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Lens mountPentax K
Lens MountPentax K
Camera FormatAPS-C / (1.5x Crop Factor)
PixelsActual: 20.42 Megapixel Effective: 20.12 Megapixel
Effective Megapixels20 Megapixel
Maximum Resolution20 MP: 5472 x 3648
Max Resolution20 MP: 5472 x 3648
Aspect Ratio3:2 , 16:9
Sensor SizeCMOS, 23.5 x 15.6 mm
Sensor TypeCMOS
Image StabilizationSensor-Shift
Sensor Size23.5 x 15.6 mm
Bit Depth12-Bit
File FormatStill Images: JPEG, RAW Movies: MPEG-4 AVC/H.264
Memory Card TypeSDXC
Bit Depth12-bit
Focus ModeAutomatic (A), Continuous-Servo AF (C), Single-servo AF (S)
Dust Reduction SystemYes
Autofocus PointsPhase Detection: 11 (9 Cross-Type)
Viewfinder TypePentaprism
Image StabilizationSensor-Shift
LCD Screen Size3“
Focus TypeAuto & Manual
Focus ModesAutomatic (A), Continuous-servo AF (C), Single-servo AF (S)
ISO SensitivityAuto, 100-51200
Autofocus PointsPhase Detection: 11, 9 cross-type
Shutter SpeedsType: Electronic
Speed: 1/6000 - 30 Second
Metering MethodCenter-Weighted Average Metering, Multi-Zone Metering, Spot Metering
Viewfinder coverage100%
Exposure ModesAperture Priority, Auto, Bulb, Manual, Movie, Program, Scene Modes, Sensitivity Priority, Shutter Priority, Shutter/Aperture Priority
Viewfinder magnificationApprox. 0.95x
Diopter adjustment range- 2.5 to +1.5 m
White BalanceAuto, CTE, Cloudy, Color Temperature, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten
Screen3 inch Rear Screen LCD (921,000)
Dust Reduction SystemYes
ISO SensitivityAuto, 100-51200
Built-in FlashYes
ShutterType: Electronic Speed: 1/6000 - 30 second
Max Sync Speed1 / 180 Second
Remote ControlRemote Control F or O-RC1 (Optional)
Max Video Resolution1920 x 1080p (Full HD)
1280 x 720p (HD)
Metering MethodCenter-weighted average metering, Multi-zone metering, Spot metering
Exposure ModesModes: Aperture Priority, Auto, Bulb, Manual, Movie, Program, Scene Modes, Sensitivity Priority, Shutter Priority, Shutter/Aperture Priority Metering Range: EV 0.0 - EV 22.0 Compensation: -5 EV to +5 EV (in 1/3 or 1/2 EV steps)
Video Clip Length (mins)1920 x 1080: 30 fps, 25 fps, 24 fps
1280 x 720: 60 fps, 50 fps
White Balance ModesAuto, CTE, Cloudy, Color Temperature, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten
Audio RecordingBuilt-In Mic: With Video (Stereo)
Flash ModesAuto Auto/Red-eye Reduction Flash On Flash On w/ Red-eye Reduction Manual Rear Curtain/Slow Sync Slow Sync
ConnectivityHDMI D (Micro) (out), USB 2.0
Built-in FlashYes
Guide No.(10 m) ISO100
Battery1 x D-LI109 Rechargeable Lithium-Ion Battery Pack, 7.4 VDC, 1050 mAh
Max Sync Speed1 / 180 seconds
Dimensions (WxHxD)4.8 x 3.7 x 2.8“ / 12.2 x 9.4 x 7.1 cm
Flash Compensation-2 EV to +1 EV (in 1/3 EV steps)
Weather SealedOperating
32 to 104F (0 to 40C)
Dedicated Flash SystemP-TTL Remote Firing
External Flash ConnectionConnection - Hot Shoe
Video RecordingYes, NTSC/PAL
File Size1920 x 1080p (Full HD) 1280 x 720p (HD)
Frame Rates@ 1920 x 1080: 30 fps, 25 fps, 24 fps @ 1280 x 720: 60 fps, 50 fps
Video Clip Length1920 x 1080 @ 30 fps: 15 min. 51 seconds @ 24 fps: 19 min. (35 MB / min.) 1280 x 720 @ 60 fps: 15 min. 51 seconds @ 50 fps: 18 min. (51 MB / min.)
Audio RecordingBuilt-in Mic: With Video, Stereo
Continuous ShootingUp to 5.4 fps
Self-Timer12 seconds, 2 seconds
Interval RecordingNo
Connectivity1x USB 2.0 1x HDMI D (Micro) (out)
System RequirementsWindows: Vista, 7, 8, 8.1 Mac: OS X 10.6 or later
Battery1x D-LI109 Rechargeable Lithium-ion Battery Pack
Operating/Storage TemperatureOperating 32 to 104F (0 to 40C)
Dimensions (WxHxD)12.2 x 9.4 x 7.1 cm
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What’s In The Box
  • Pentax K-S1 DSLR Camera (Body) - Black
  • Strap O-ST132
  • Rechargeable Lithium-Ion Battery D-LI109
  • Battery Charger D-BC109
  • Software (CD-ROM) S-SW151
  • Eyecup FR
  • Body mount cover
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