| key specs |
| Camera Type | DSLR Camera | DSLR Camera |
| Effective Pixels | 20.1 MP | 24.2 MP |
| Sensor Type | CMOS | CMOS |
| Display Type | TFT LCD | TFT |
| Display Size | 3 inch | 3 inch |
| Battery Type | Lithium ion | Lithium ion |
| Touchscreen | - | Yes |
| general |
| Brand | Ricoh | Canon |
| Model | Pentax K-S1 20.1MP DSLR Camera | EOS 77D 24.2MP DSLR Camera |
| Model Name | Pentax K-S1 | EOS 77D |
| Series | Pentax | - |
| Color | Black | Black |
| Type | DSLR Camera | DSLR Camera |
| Effective Pixels | 20.1 MP | 24.2 MP |
| Dimensions(WxHxD) | 121 x 93 x 70 mm | 131 x 99.9 x 76.2 mm |
| Weight | 558 GM | 493 GM |
| Temperature | 0 to 40 | 0 to 40 |
| Model Number | - | EOS 77D |
| SLR Variant | - | Body With Single Lens Ef-S18-55 Is Stm 16 Gb Sd Card + Camera Bag |
| Tripod Socket | - | Yes |
| sensor features |
| Sensor Type | CMOS | CMOS |
| Sensor Size | 23.5 x 15.6 mm | 22.3 x 14.9 |
| ISO Rating | - | ISO 100 - 25600 |
| Maximum ISO | - | 25600 ISO |
| lens features |
| Lens Type | Pentax KAF2 | - |
| Focal Length | 18 - 55 mm / 50 - 200 mm | 1.6x |
| Aperture Range | F3.5 (W) - F5.6 (T) / F4.0 (W) - F5.6 (T) | - |
| Manual Focus | Yes | - |
| Color Filter | Primary RGB Color Filter | - |
| Lens Mount | - | Canon EF Mount |
| Digital Zoom | - | 3x-10x |
| Compatible Lens | - | Canon EF lenses including EF-S lenses, Excluding EF-M Lenses |
| Dust Reduction | - | Yes |
| 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) | - |
| View Finder | - | Yes |
| View Finder Type | - | Eye Level Pentamirror Single Lens Reflex Viewfinder |
| focus features |
| Auto Focus | Yes | - |
| Metering Modes | Multi, Center-Weighted, Spot | 63-zone TTL Open-aperture Metering using 7560-pixel RGB Plus IR Metering Sensor, Evaluative Metering linked to all AF points, Partial Metering approx. 6.0% of viewfinder at center, Spot Metering approx. 3.5% of Viewfinder at Center, Center-weighted Average Metering |
| White Balancing | Daylight White, W Cool White, L Warm White), Tungsten Light, Flash, CTE, Manual WB, Color | - |
| 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 | - |
| Focus Mode | - | Fixed, Precision Matte |
| Focus Range | - | Focusing Brightness Range EV -3 - 18 with the Center AF Point Supporting f/2.8, One-shot AF, at Room Temperature, ISO 100 |
| shutter features |
| Shutter Speed | 1/6000 sec (Max) & 30 sec (Min) | 1/4000 sec |
| Self-timer | Yes | Yes |
| Continuous Shots | Hi 5.4 fps, Lo 3.0 fps | - |
| flash features |
| Built-in Flash | Yes | - |
| External Flash | Yes | - |
| Flash Modes | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual | - |
| image features |
| Image Format | JPEG, RAW, RAW + JPEG | JPEG, RAW |
| Maximum Resolution | 5472 x 3648 | - |
| Image Stabilizer | Yes | - |
| Picture Angle | 28 mm Ultra Wide-angle | - |
| Aspect Ratio | - | 32, 43, 169, 11 |
| display features |
| Display Type | TFT LCD | TFT |
| Display Size | 3 inch | 3 inch |
| Display Resolution | 921K dots | - |
| LCD Display | Fixed Articulated LCD | - |
| Touch Screen | - | Yes |
| connectivity features |
| HDMI | Yes | - |
| USB | Yes | - |
| Wifi | - | Yes |
| storage and power features |
| Upgradable Memory | Yes | - |
| Card Type | SD, SDHC, SDXC (UHS-1 compliant), Eye-Fi Card, FLU Card | - |
| Power Supply | AC adapter K-AC128 | - |
| Battery Type | Lithium ion | Lithium ion |
| Battery Life | 480 | - |
| Power Requirement | - | Rated Voltage 7.2 V DC, Battery Capacity 1040 mAh |
| Batteries Included | - | Yes |
| audio and video features |
| Microphone | Built-in stereo microphone | - |
| Speaker | Mono Speaker | - |
| Audio Features | Adjustable recording sound level | - |
| Video Format | H.264 | - |
| Video Resolution | - | 6000 x 4000 |
| Video Quality | - | Full HD |
| 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 | Basic Zone modes Scene Intelligent Auto, Flash Off, Creative Auto, Portrait, Landscape, Close-up, Sports, Special Scene Modes Group Photo, Kids, Food, Candlelight, Night Portrait, Handheld Night Scene, HDR Backlight Control, Creative filters Grainy B/W, Soft focus, Fish-eye effect, Water Painting Effect, Toy Camera Effect, Miniature Effect, HDR Art Standard, HDR Art Vivid, HDR Art Bold, HDR Art Embossed, Creative Zone Modes Program AE, Shutter-priority AE, Aperture-priority AE, Manual Exposure |
| HD Support | - | Yes |
| exposure features |
| Exposure Mode | - | Automatic |