In depth comparison and review of Pentax K-S1 and Sony Alpha7s II ILCE-7SM2. 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 | Sony Alpha7s II ILCE-7SM2 |
|---|
| 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 | 9.57 cm |
| Width | 12 cm | 12.69 cm |
| Depth | 7 cm | 6.03 cm |
| Weight | 485 g | 584 g |
| Enclosure Colour | White | Black | Black |
| SENSOR | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Sensor Resolution | 20.12 Megapixel | 12.2 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | Exmor CMOS |
| Total Pixels | 20,420,000 pixels | 12,400,000 pixels |
| Effective Sensor Resolution | 20,120,000 pixels | 12,200,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | Full Frame (35.8 x 23.9 mm) |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | Yes | Yes |
| Sensor Features | Special Protect (SP) coating | Dust Reduction (image sensor vibration), Anti-Dust coating |
| Image Stabiliser | - | Optical (5-axis Steady Shot) |
| Built-in Optical Image Stabiliser | - | Yes |
| PROCESSOR | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
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| Image Processor | PRIME MII | BIONZ X |
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| LENS | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Lens Mounting Type | Pentax KAF2 | Sony E-mount |
|---|
| FOCUSING | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Auto Focus | TTL phase detection | TTL contrast detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 11 | 169 |
| Auto Focus Features | - | Focus Peaking function, Manual Focus Check Live View |
| AE/AF Control | Face-priority AF, Subject-tracking AF | Flex Focus Point, Face-priority AF, Subject-tracking AF, Eye detection AF |
| Face Detection | Yes | Face Recognition |
| VIEWFINDER | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | - | 2,359,296 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.95x | 0.78x |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -4 to +3 |
| Features | - | Viewfinder brightness control |
| EXPOSURE & WHITE BALANCE | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| ISO (Max) | 51200 | 409600 |
|---|---|---|
| Native ISO | 100-51200 | - |
| Extended ISO (Max) | - | 409600 |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO auto (100-12800), ISO 100-102400, ISO 50-409600 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, spot |
| Exposure Metering Zones | 77 | 1200 |
| Exposure Modes | Programme, automatic, manual, aperture-priority, shutter-priority, shutter & aperture priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Flash Exposure 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 | Landscape, portrait mode, action, macro, night portrait, night scene, sports mode, sunset, handheld twilight, anti-motion blur |
| 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 | Black & White, Sepia, Neutral, Vivid, sunset, soft focus, illustration, landscape, portrait, Water Colour, miniature, clear, deep, autumn leaves, Retro, HDR, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, Rich-tone monochrome, Soft High-key, Night Scene, Lighting, Standard |
| 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, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), 2500K - 9900K, fluorescent light (daylight white) |
| Shutter Type | Mechanical electronically-controlled | Mechanical electronically-controlled |
| Max Shutter Speed | 1/6000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/2 or 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | - | 3 or 5 steps |
| White Balance Bracketing | Yes | Yes |
| X-sync Speed | 1/180 sec | 1/250sec |
| Exposure Range | EV 0-22 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Type | 3" LCD display | 3" LCD display |
|---|---|---|
| Display Format | 921,000 pixels | 1,228,800 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | Colour control, display brightness control | Display brightness control |
| FLASH | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| 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 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Digital Video Format | H.264 | AVCHD, H.264, XAVC S, AVC |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW) + JPEG, DNG (RAW) | JPEG, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 3840 x 2160 |
| Surround Sound | - | Dolby Digital AC-3 (2 channel) recording |
| Microphone Operation Mode | Mono | Stereo |
| Microphone Features | Sensitivity control | - |
| MEMORY | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Memory Card Slot | SD card | Memory Stick Micro (M2) card, Memory Stick PRO Duo card, SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDXC UHS-I Memory Card | SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, Memory Stick Micro Mark2, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card |
| Memory Card Included | - | No |
| Image Storage | - | JPEG 4240 x 2832 JPEG 2768 x 1848 JPEG 2128 x 1416 JPEG 1376 x 920 JPEG 4240 x 2384 JPEG 2768 x 1560 JPEG 2128 x 1200 JPEG 1376 x 776 |
| Video Capture | H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps |
XAVC S - 3840 x 2160 - 30 fps XAVC S - 3840 x 2160 - 24Mbps XAVC S - 1920 x 1080 - 60 fps XAVC S - 1920 x 1080 - 30 fps XAVC S - 1920 x 1080 - 24 fps XAVC S - 1920 x 1080 - 120 fps AVCHD - 1920 x 1080 - 60 fps AVCHD - 1920 x 1080 - 24 fps H.264 - 1920 x 1080 - 60 fps H.264 - 1920 x 1080 - 30 fps H.264 - 1280 x 720 - 30 fps |
| BATTERY AND CHARGING | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Battery Type | Pentax D-Li109 Lithium Ion | Sony NP-FW50 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li109 Li-ion rechargeable battery (included) | Sony NP-FW50 Li-ion rechargeable battery - 1080 mAh (included) |
| Battery Life | Photo shooting - 480 shots (50% flash usage) Playback - 4.5 hours |
Photo shooting - 310 shots (EVF on) Photo shooting - 370 shots (LCD Monitor on) |
| CONNECTIONS | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Interface | HDMI | HDMI, USB 2.0, IEEE 802.11b/g/n, NFC (Near Field Communication) |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view |
| Print Standard | DPOF support, Exif Print support | DPOF support, Exif Print support, PRINT Image Matching |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 HDMI output (19 pin micro HDMI Type D) |
USB 2.0 HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) |
| FEATURES | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec, 5 sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 5.4 frames per second | 2.5 frames per second, 5 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, RGB primary colour filter, sharpness control, histogram display, AE lock, AF lock, saturation control, Sweep Panorama technology, contrast control, Dynamic Range Optimizer, peripheral illumination correction, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), x.v.Colour technology, Multi-Frame Noise Reduction, Intelligent AUTO (iAUTO), High ISO NR, high-speed recording, Superior Auto mode, noise reduction over long exposures, BRAVIA Sync function, PhotoTV HD, distortion correction function, Clean HDMI output for 4K movies |
| OTHERS | Pentax K-S1 | Sony Alpha7s II ILCE-7SM2 |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, eyecup, shoe cap | Eyepiece cover, battery charger, shoulder strap, AC power adaptor, shoe cap, micro-USB cable, cable protector |
|---|---|---|
| Software | Drivers & Utilities | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | 0 °C |
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