Pentax K-S1 vs. Olympus OM-D E-M1X

Camera Comparison, Reviews and Tests

In depth comparison and review of Pentax K-S1 and Olympus OM-D E-M1X. Compare design, sensors, proximity features, memory capacities and other important specifications and features to easily choose the right camera for you. Our goal is to help you uncover differences between the products and find the digital camera that will best fit your needs.

Camera Specifications Comparison

Pentax K-S1 vs. Olympus OM-D E-M1X Comparison Chart
DESIGN AND DIMENSIONS Pentax K-S1 Olympus OM-D E-M1X
Product Type Digital camera - 1080p - SLR with Live View mode, movie recording Digital camera - 4K - mirrorless system
Lens Included Body only Body only
Height 9.3 cm 14.68 cm
Width 12 cm 14.44 cm
Depth 7 cm 7.54 cm
Weight 485 g 849 g
Weight Details - Camera with battery: 849 g
Camera with battery and memory card: 997 g
Body Material - Magnesium alloy
Enclosure Colour White | Black Black
Protection - Splashproof, freezeproof, dust-resistant, IPX1
Navigation - GPS receiver
SENSOR Pentax K-S1 Olympus OM-D E-M1X
Sensor Resolution 20.12 Megapixel 20.4 Megapixel
Optical Sensor Type CMOS Live MOS
Total Pixels 20,420,000 pixels 21,770,000 pixels
Effective Sensor Resolution 20,120,000 pixels 20,400,000 pixels
Optical Sensor Size APS-C (23.5 x 15.6 mm) Four Thirds (4/3")
Frame Rate (Max Resolution) - 24 fps
Sensor Dust Reduction Yes Yes
Sensor Features Special Protect (SP) coating Supersonic Wave Filter (SWF)
Image Stabiliser - Optical (5-axis image sensor shift mechanism)
Built-in Optical Image Stabiliser - Yes
Sensors - Barometer, magnetometer, temperature
PROCESSOR Pentax K-S1 Olympus OM-D E-M1X
Image Processor PRIME MII Dual TruePic VIII
LENS Pentax K-S1 Olympus OM-D E-M1X
Lens Mounting Type Pentax KAF2 Micro Four Thirds
FOCUSING Pentax K-S1 Olympus OM-D E-M1X
Auto Focus TTL phase detection TTL contrast and phase detection
Auto Focus Points (Zones) Qty 11 121
Auto Focus Features - Focus Peaking function, Frequency Accelerating Sensor Technology (F.A.S.T.) AF system
AE/AF Control Face-priority AF, Subject-tracking AF Face-priority AF, Subject-tracking AF, Touch Area AF, Eye detection AF, Subject detection AF
Face Detection Yes Eye Detect AF, face-priority AF function
VIEWFINDER Pentax K-S1 Olympus OM-D E-M1X
Viewfinder Type Optical - fixed eye-level pentaprism Electronic - LCD
Viewfinder Colour Support - Colour
Viewfinder Resolution - 2,360,000 pixels
Optical Viewfinder Field Coverage 100% 100%
Optical Viewfinder Magnification 0.95x 1.65x
Optical Viewfinder Dioptric Correction Range -2.5 to +1.5 -4 to +2
Field of View Crop Factor - 2
Features - Auto eye sensor
EXPOSURE & WHITE BALANCE Pentax K-S1 Olympus OM-D E-M1X
ISO (Max) 51200 25600
Native ISO 100-51200 200-25600
Extended ISO (Min) - 64
Light Sensitivity ISO 100-51200, ISO auto (100-51200) ISO 100, ISO 64, ISO auto (200-6400), ISO 200-25600
Exposure Metering Multi-segment, centre-weighted, spot Multi-segment, centre-weighted, spot
Exposure Metering Zones 77 324
Exposure Modes Programme, automatic, manual, aperture-priority, shutter-priority, shutter & aperture priority Programme, bulb, automatic, manual, aperture-priority, shutter-priority
Bracketing Modes - Art Filter bracketing, focus bracketing, ISO sensitivity bracketing, Flash Exposure Bracketing, white balance bracketing
Shooting Programs Landscape, portrait mode, macro, museum, surf & snow, PET, Blue Sky, food, night scene, sunset, candle, night snapshot, night scene with portrait, kids, Stage, night scene HDR, moving object, forest, backlight silhouette -
Special Effects Natural, bright, Vibrant, monochrome, Muted, landscape, portrait, Cross Process, Bleach Bypass, Radiant, Reversal Film, Tone Expansion, Cold vintage, Colour Fade, Bold Monochrome, Unicolour Bold, Clear Tone, Warm Fade, Brilliant Colour, Infrared Filter -
White Balance Custom, automatic, presets Custom, automatic, presets
White Balance Presets Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight colour), fluorescent light (daylight white) Incandescent, fluorescent, cloudy, sunlight, Flash, shade, Underwater, 3000K - 7500K
Shutter Type Mechanical electronically-controlled Mechanical electronically-controlled
Max Shutter Speed 1/6000 sec 1/8000 sec
Min Shutter Speed 30 sec 60 sec
Exposure Compensation ±5 EV range, in 1/2 or 1/3 EV steps ±5 EV range, in 1, 1/2 or 1/3 EV steps
White Balance Bracketing Yes Yes
X-sync Speed 1/180 sec 1/250sec
Exposure Range EV 0-22 (ISO 100) EV -2-20 (ISO 100)
DISPLAY Pentax K-S1 Olympus OM-D E-M1X
Type 3" LCD display 3" LCD display
Touch Screen - Yes
Display Format 921,000 pixels 1,037,000 pixels
Display Form Factor Built-in Rotating
Display Features Colour control, display brightness control -
FLASH Pentax K-S1 Olympus OM-D E-M1X
Camera Flash Pop-up flash -
Guide Number (m / ISO 100) 10 -
Flash Modes Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction -
Red-Eye Reduction Yes -
Features AF illuminator, flash +/- compensation -
VIDEOGRAPHY / CAMCORDER Pentax K-S1 Olympus OM-D E-M1X
Digital Video Format H.264 H.264, MOV
Image Recording Format JPEG, DNG (RAW) + JPEG, DNG (RAW) JPEG, RAW, RAW + JPEG
Max Video Resolution 1920 x 1080 4096 x 2160
Microphone Operation Mode Mono Stereo
Microphone Features Sensitivity control -
MEMORY Pentax K-S1 Olympus OM-D E-M1X
Memory Card Slot SD card Dual SD card
Supported Memory Cards SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDXC UHS-I Memory Card SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, SDHC UHS-II Memory Card, SDXC UHS-II Memory Card
Memory Card Included - No
Image Storage - RAW 5184 x 3888
JPEG 5184 x 3888
RAW 8160 x 6120 - High Resolution Mode
JPEG 8160 x 6120 - High Resolution Mode
JPEG 5760 x 4320 - High Resolution Mode
Video Capture H.264 - 1920 x 1080 - 30 fps
H.264 - 1920 x 1080 - 25 fps
H.264 - 1920 x 1080 - 24 fps
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BATTERY AND CHARGING Pentax K-S1 Olympus OM-D E-M1X
Battery Type Pentax D-Li109 Lithium Ion Olympus BLH-1 Lithium Ion
Details Pentax D-Li109 Li-ion rechargeable battery (included) 2 x Olympus BLH-1 Li-ion rechargeable battery - 1720 mAh (included)
Battery Life Photo shooting - 480 shots (50% flash usage)
Playback - 4.5 hours
Photo shooting - 2580 shots (quick sleep mode)
Photo shooting - 870 shots
Video recording - 170 minutes
CONNECTIONS Pentax K-S1 Olympus OM-D E-M1X
Interface HDMI HDMI, USB 3.0, IEEE 802.11a/b/g/n/ac, Bluetooth 4.2
Connectivity Features - Remote control via mobile devices, remote live view, QR code scanning
Print Standard DPOF support, Exif Print support DPOF support, Exif Print support
Flash Terminal Hot shoe Hot shoe
Connector Type USB 2.0
HDMI output (19 pin micro HDMI Type D)
USB 3.0 (USB Type-C)
HDMI output (19 pin micro HDMI Type D)
Microphone (mini-phone stereo 3.5 mm)
Headphones (mini-phone stereo 3.5 mm)
Remote control (sub-mini phone 2.5 mm)
FEATURES Pentax K-S1 Olympus OM-D E-M1X
Self-Timer Delay 2sec, 12sec 2sec, 12sec
Continuous Shooting Speed 3 frames per second, 5.4 frames per second 15 frames per second, 60 frames per second
HDR Mode Auto HDR mode Auto HDR mode
Additional Features RGB primary colour filter, depth-of-field preview button, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, in-camera film editing, in-camera RAW processing, HDR image enhancement technology, hue control, Eye-Fi Card Ready, LED body illumination Built-in speaker, auto power save, relay recording, USB charging, high-speed recording, Time-Lapse recording, Focus Stacking, Flickering Reduction function, 50-megapixel High Resolution mode
OTHERS Pentax K-S1 Olympus OM-D E-M1X
Included Accessories Battery charger, body cap, shoulder strap, eyecup, shoe cap Carrying strap, battery charger, body cap, eyecup, cable clip, cable protector, hot shoe cover, USB-C cable, battery holder
Software Drivers & Utilities -
Max Operating Temperature 40 °C 40 °C
Min Operating Temperature -10 °C -10 °C
Service & Support - Limited warranty - 2 years
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