• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • Medium format 2,169.5mm2
  • 101.1 megapixels
  • ISO 50 - 12,800
  • Detailed specifications
  • Pentax K-S1
  • Phase One XF 100MP
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: K-S1 XF 100MP
Alternate Model Number(s):   XF IQ3 100MP
Camera Format: SLR SLR
Currently Manufactured: No Yes
Retail Price: $799.95 $48990.00
Street Price: $501.65 $48,990.00
Date Available: 2014-09-15 2016-01-04
Tripod Mount: Yes Yes
Weight: 27.0 oz (765 g)
includes batteries, kit lens
77.5 oz (2,196 g)
includes batteries
Size: 4.8 x 3.7 x 2.8 in.
(121 x 93 x 70 mm)
6.0 x 5.3 x 6.3 in.
(152 x 135 x 160 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Sony
Effective Megapixels: 20.1 101.1
Sensor Format: APS-C Medium format
Sensor size: 366.6mm2 (23.50mm x 15.60mm) 2169.48mm2 (53.70mm x 40.40mm)
Approximate Pixel Pitch: 4.29 microns 4.63 microns
Focal Length Multiplier: 1.5x 0.6x
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Optional None
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 78  
DxO Color Depth Score (bits): 23.5  
DxO Dynamic Range Score (evs): 13.0  
DxO Maximum Effective ISO Score (iso): 1,061  
Image Capture
Image Resolution: 5472 x 3648 (20.0 MP, 3:2),
4224 x 2816 (11.9 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2)
11608 x 8708 (101.1 MP, 4:3)
Image File Format: JPEG (EXIF 2.30), 12-bit RAW (.PEF, .DNG) RAW only, 16-bit IIQ file, lossless and near lossless compression options
Continuous-mode frames/second: 5.4 n/a
Video Capture
Can take movies: Yes No
Movie Resolution: 1920x1080 (30p/​25p/​24p)
1280x720 (60p/​50p)
Movie File Format: MPEG-4 AVC/H.264 (MOV) N/A. Can stream Live View via USB 3.0, or over HDMI at up to 1080p30
Composite Video Out: No
NTSC/PAL Switchable Video: n/a n/a
Video Usable as Viewfinder: n/a n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) Phase One XF / Hasselblad H
Lens: smc Pentax-DA L 18-55mm f/3.5-5.6 AL n/a
Focal Length (35mm equivalent): 27 - 83mm  
Focal Length (actual): 18 - 55mm  
Zoom Ratio: 3.06x  
Aperture Range: f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele)  
Integrated ND Filter: No No
Normal Focus Range: 25 cm to Infinity
9.8 in to Infinity
 
Macro Focus Range:    
Filter Thread: 52.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No
Digital Zoom Values:   n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: SAFOX IX i+, TTL phase-matching -11 point (9 cross type focus points in the center) Hybrid Autofocus with HAP-1 1MP CMOS Sensor; Spot, Average, Hyperfocal AF modes; Single or Continous AF modes
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD Optical / LCD
Viewfinder Type: SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., 20.5mm eyepoint, -2.5 to +1.5 diopter Modular viewfinders (90-degree pentaprism or waist level), 97% coverage, adjustable or exchangeable diopter, interchangeable focus screen (Matte (default), Split, Center Prism)
Focus Peaking: Yes Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.63x  
Viewfinder Magnification (nominal/claimed): 0.95x  
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.2
Rear Display Resolution: 921,600 dots (307,200 px) 1,152,000 dots (384,000 px)
Touchscreen: No Yes
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: No Yes
Exposure
Maximum ISO (native): 51200 12800
Minimum ISO (native): 100 50
ISO Settings: Auto, 100-51200 (1, 1/2 or 1/3 EV steps) Auto, ISO 50-12800
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Multi Auto, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten Light, Flash, CTE, Manual, Color Temperature Auto, Daylight, Fluorescent, Tungsten, Flash, Custom
Shutter Speed Range: 1/6000 - 30 sec 1/4000 - 3600 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 77 segment Multi, Center-weighted, Spot Average, Spot and Auto
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Sensitivity Priority, Shutter & Aperture Priority (Tav); Scene: Portrait, Landscape, Macro, Moving Object, Night Scene Portrait, Sunset, Blue Sky, Forest, Night Scene, Night Scene HDR (JPEG only), Night Snap, Food, Pet, Kids, Surf & Snow, Backlight Silhouette, Candlelight, Stage Lighting, Museum; Effect: Faded Color, Clear Tone, Brilliant Color, Unicolor Bold, Vintage Color, Cross Processing, Warm Fade, Tone Expansion, Bold Monochrome, Infrared Filter, Vibrant Color Enhance; Digital filters (capture): Extract Color, Replace Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3 Focus Stack Tool, HDR Sequence Tool
Self Timer: 2 or 12 seconds 0.5-60 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: Auto Flash Discharge, Auto Flash + Red-eye Reduction (Auto Picture, Scene) Flash On, Flash On+ Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, Manual Flash Discharge (Full-1/128) n/a
Flash Guide Number (ISO 100): 10.0 m / 32.8 ft. n/a
Flash Range Description: Depends on lens n/a
Max Flash Sync: 1/180 1/125 (focal plane shutter); 1/1600 (leaf shutter)
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps  
External Flash Connection: Hot Shoe Hot Shoe, PC Sync Terminal
Built-In Wireless Flash Control:   Trigger Only
Image Storage
Usable Memory Types: SD / SDHC / SDXC CF1
UHS Support: UHS-I  
Other Memory: UHS-I compliant UDMA7 supported
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 16-bit IIQ file, lossless and near lossless compression options
Movie File Format: MPEG-4 AVC/H.264 (MOV) N/A. Can stream Live View via USB 3.0, or over HDMI at up to 1080p30
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 3.0 Super Speed,FireWire,WiFi
PictBridge Compliant: No No
DPOF Compliant: Yes No
Remote Control: Yes Yes
Remote Control Type: Optional IR Via remote port, USB, Firewire or Wi-Fi
Connections (extended): Micro (Type D) HMDI IQ3: USB 3.0, Firewire 400/800, Micro (Type-D) HDMI, 8-pin multi-connector port; XF: 12-pin multi-connector port
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):    
Cycle time for RAW shooting in single shot mode (seconds per frame):   1.87
Buffer size for RAW shooting in single shot mode (frames):    
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): 5.4  
Buffer size for JPEG shooting in burst mode (frames, max resolution): 20  
RAW shooting speed in burst mode (fps):   0.6
Buffer size for RAW shooting in burst mode (frames):   Unlimited
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid):   0.33 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):   0.251 seconds
Shutter Lag (manual focus):   0.351 seconds
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused):   0.352 seconds
Shutter Lag (notes):    
Startup Time:   10.0 seconds
Play -> Record Time:   2.4 seconds
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 480 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI109 Proprietary (2 identical batteries required)
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI109 Lithium-ion rechargeable 4 x Proprietary Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: Yes
Software
Included Software: Digital Camera Utility 5 Software CD-ROM Capture One Pro 9
OS Compatibility:   Mac and Windows
Miscellaneous
Notes & Features: The K-S1 comes in 3 standard colors: black, blue, and white. In addition, two separate color collections are available; The Fabric Collection, containing 4 unique colors such as cotton beige and tweed gray – and the Night Sky Collection, with 5 more elegant colors like Sunset Orange, Dawn Purple, and Midnight Black.