| key specs |
| Camera Type | DSLR Camera | Digital Camera |
| Effective Pixels | 20.1 MP | 20.2 MP |
| Sensor Type | CMOS | CMOS |
| Display Type | TFT LCD | - |
| Display Size | 3 inch | 3 inch |
| Battery Type | Lithium ion | Lithium ion |
| general |
| Brand | Ricoh | Sony |
| Model | Pentax K-S1 20.1MP DSLR Camera | CyberShot RX100 20.2MP Digital Camera |
| Model Name | Pentax K-S1 | CyberShot RX100 |
| Series | Pentax | Cyber-shot |
| Color | Black | Black |
| Type | DSLR Camera | Digital Camera |
| Effective Pixels | 20.1 MP | 20.2 MP |
| Dimensions(WxHxD) | 121 x 93 x 70 mm | 25.9 x 21.1 x 11.9 cm |
| Weight | 558 GM | - |
| Temperature | 0 to 40 | 0 to 40 |
| Face Detection | - | Yes |
| sensor features |
| Sensor Type | CMOS | CMOS |
| Sensor Size | 23.5 x 15.6 mm | - |
| ISO Rating | - | ISO 125 - 12800 |
| Maximum ISO | - | 6400 ISO |
| Maximum FPS | - | 16 |
| Other Sensor Features | - | Exmor CMOS |
| lens features |
| Lens Type | Pentax KAF2 | - |
| Focal Length | 18 - 55 mm / 50 - 200 mm | - |
| Aperture Range | F3.5 (W) - F5.6 (T) / F4.0 (W) - F5.6 (T) | F1.8 W - F4.9 T |
| Manual Focus | Yes | Yes |
| Color Filter | Primary RGB Color Filter | - |
| Digital Zoom | - | 14x |
| Optical Zoom | - | 3.6x |
| viewfinder features |
| Viewfinder Coverage | 100% | - |
| Viewfinder Magnification | 0.95x | - |
| Viewpoint Dioptric Adjustment | -2.5m to +1.5m | - |
| Viewfinder Eye Point | 20.5 mm | - |
| Other Viewfinder Features | Standard focusing screen (Natural-Bright-Matte III)Depth Of Field Preview (Optical (diaphragm stop-down), digital) | - |
| focus features |
| Auto Focus | Yes | Yes |
| Metering Modes | Multi, Center-Weighted, Spot | - |
| White Balancing | Daylight White, W Cool White, L Warm White), Tungsten Light, Flash, CTE, Manual WB, Color | Auto, Daylight, Cloudy, Fluorescent, Incandescent, Flash |
| Other Focus Features | Interchangeable Lens Features [Min. Aperture (F22.0 - F32.0), Number of diaphragm blades (6), Lens Optics (11 Elements & 10 Groups), Min. Focus (1.1 m), Maximum magnification (0.24x), Full Time Manual Focus, Filter Thread (49 mm), Rotary Zoom Method | - |
| shutter features |
| Shutter Speed | 1/6000 sec (Max) & 30 sec (Min) | - |
| Self-timer | Yes | Yes |
| Continuous Shots | Hi 5.4 fps, Lo 3.0 fps | Yes, 10 fps |
| flash features |
| Built-in Flash | Yes | Yes |
| External Flash | Yes | - |
| Flash Modes | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual | Auto, Flash On, Slow Sync, Rear Sync, Flash Off |
| image features |
| Image Format | JPEG, RAW, RAW + JPEG | JPEG, RAW ARW 2.3 |
| Maximum Resolution | 5472 x 3648 | - |
| Image Stabilizer | Yes | Yes |
| Picture Angle | 28 mm Ultra Wide-angle | - |
| Aspect Ratio | - | 43, 169 |
| Red Eye Reduction | - | Yes |
| Image Sizing | - | 4896 x 3672 43, 18 M |
| display features |
| Display Type | TFT LCD | - |
| Display Size | 3 inch | 3 inch |
| Display Resolution | 921K dots | - |
| LCD Display | Fixed Articulated LCD | - |
| LCD Display Image Resolution | - | 1228800 dots |
| LCD Display Video Resolution | - | 1920 x 1080 |
| connectivity features |
| HDMI | Yes | - |
| USB | Yes | - |
| storage and power features |
| Upgradable Memory | Yes | Yes |
| Card Type | SD, SDHC, SDXC (UHS-1 compliant), Eye-Fi Card, FLU Card | SD / SDHC / SDXC / Stick Duo / Stick PRO Duo / Stick PRO Duo - High Speed / Stick PRO HG Duo / Stick micro / Stick micro Mark 2 / microSD / microSDHC |
| Power Supply | AC adapter K-AC128 | AC Adaptor |
| Battery Type | Lithium ion | Lithium ion |
| Battery Life | 480 | - |
| audio and video features |
| Microphone | Built-in stereo microphone | Stereo |
| Speaker | Mono Speaker | - |
| Audio Features | Adjustable recording sound level | - |
| Video Format | H.264 | AVCHD Ver 2.0, MPEG-4 AVC / H.264 |
| modes and functions features |
| Shooting Modes | EFFECT Mode (Faded Color, Clear Tone, Brilliant Color, Unicolor Bold, Vintage Color, Cross Processing, Warm Fade, Tone Expansion, Bold Monochrome, Infrared Filter, Vibrant Color Enhance), Custom Image modes (Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome, Cross Processing | Superior Auto, Intelligent Auto, Program Auto, Movie Mode, Panorama, Scene Selection, Picture Effect, Manual Exposure |
| Delete Function | - | Yes |