In depth comparison and review of Pentax K-S1 and Olympus OM-D E-M1 Mark II. 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.
| DESIGN AND DIMENSIONS | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| 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 | 9.09 cm |
| Width | 12 cm | 13.41 cm |
| Depth | 7 cm | 6.89 cm |
| Weight | 485 g | 498 g |
| Weight Details | - | Camera only: 498 g Camera with battery and memory card: 574 g |
| Body Material | - | Metal |
| Enclosure Colour | White | Black | Black |
| Protection | - | Splashproof, freezeproof, dust-resistant |
| SENSOR | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Sensor Resolution | 20.12 Megapixel | 20.4 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | Live MOS |
| Total Pixels | 20,420,000 pixels | 21,800,000 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 | - | Digital level metre |
| PROCESSOR | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Image Processor | PRIME MII | TruePic VIII |
|---|
| LENS | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Lens Mounting Type | Pentax KAF2 | Micro Four Thirds |
|---|
| FOCUSING | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Auto Focus | TTL phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 11 | 121 |
| Auto Focus Features | - | Focus Peaking function |
| AE/AF Control | Face-priority AF, Subject-tracking AF | Face-priority AF, Eye detection AF |
| Face Detection | Yes | Eye Detect AF, face-priority AF function |
| VIEWFINDER | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| 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 | - |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -4 to +2 |
| Field of View Crop Factor | - | 2 |
| EXPOSURE & WHITE BALANCE | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| ISO (Max) | 51200 | 25600 |
|---|---|---|
| Native ISO | 100-51200 | 200-6400 |
| Extended ISO (Max) | - | 25600 |
| Extended ISO (Min) | - | 64 |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO auto (64-6400), ISO 64-25600 |
| 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 | Monotone, Black & White Red filter, Black & White Yellow filter, Vivid, Custom Effect, Black & White Orange filter, soft focus, natural, Black & White Green filter, Muted, portrait, Water Colour, Diorama, Cross Process, partial colour, Grainy Film, Light Tone, Pop Art, Pale & Light Colour, pin hole, Gentle Sepia, i-Enhance, Dramatic Tone, High Key, Low Key, Key Line, Vintage |
| 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, 2000K - 14000K |
| Shutter Type | Mechanical electronically-controlled | Mechanical |
| Max Shutter Speed | 1/6000 sec | 1/32000 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 |
| Auto Exposure Bracketing | - | 5 steps in 1/3, 2/3 or 1 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-M1 Mark II |
|---|
| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 921,000 pixels | 1,037,000 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | Colour control, display brightness control | Display brightness control, display colour control |
| FLASH | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Camera Flash | Pop-up flash | Hot-shoe clip-on flash |
|---|---|---|
| Guide Number (m / ISO 100) | 10 | 9.1 |
| Flash Modes | Fill-in mode, rear curtain sync, slow synchro, auto mode, flash OFF mode, red-eye reduction | Fill-in mode, rear curtain sync, red-eye reduction, slow sync |
| Red-Eye Reduction | Yes | Yes |
| Features | AF illuminator, flash +/- compensation | Flash +/- compensation |
| External Flash Name | - | Olympus FL-LM3 |
| VIDEOGRAPHY / CAMCORDER | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Digital Video Format | H.264 | MJPEG, H.264 |
|---|---|---|
| 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 | Wind noise reduction |
| MEMORY | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| 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 | - | 5184 x 3888 |
| Video Capture | H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps |
4096 x 2160 p - 24 fps - 237Mbps 3840 x 2160 p - 30 fps 3840 x 2160 p - 25 fps 3840 x 2160 p - 24 fps 1920 x 1080 p - 30 fps 1920 x 1080 p - 25 fps 1920 x 1080 p - 24 fps 1920 x 1080 p - 60 fps 1920 x 1080 p - 50 fps 1280 x 720 p - 60 fps 1280 x 720 p - 50 fps 1280 x 720 p - 30 fps 1280 x 720 p - 25 fps 1280 x 720 p - 24 fps |
| BATTERY AND CHARGING | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Battery Type | Pentax D-Li109 Lithium Ion | Olympus BLH-1 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li109 Li-ion rechargeable battery (included) | Olympus BLH-1 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 480 shots (50% flash usage) Playback - 4.5 hours |
- |
| CONNECTIONS | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Interface | HDMI | HDMI, USB 3.0, Wireless LAN |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view |
| Print Standard | DPOF support, Exif Print 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 HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control |
| FEATURES | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Self-Timer Delay | 2sec, 12sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 5.4 frames per second | 10 frames per second, 15 frames per second, 60 frames per second, 18 frames per second |
| HDR Mode | Auto HDR mode | Auto HDR mode, HDR post-processing |
| 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, histogram display, shadow point display, highlight point display, digital tele-converter, in-camera RAW processing, HDR image enhancement technology, Eye-Fi Card Ready, Time-Lapse recording, noise reduction over long exposures, high ISO speed noise reduction, Focus Stacking |
| OTHERS | Pentax K-S1 | Olympus OM-D E-M1 Mark II |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, eyecup, shoe cap | Battery charger, shoulder strap, USB cable, cable clip |
|---|---|---|
| Software | Drivers & Utilities | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | -10 °C |
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