| General | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Brand | Pentax | Olympus |
| Model | K-3 Mark III | OM-D E-M10 Mark IV |
| Predecessor Model | Pentax K-3 Mark II | Olympus OM-D E-M10 Mark III |
| MSRP | $1999 (body only) | $699 (body only), $799 (w/14-42mm lens) |
| Camera Type | Interchangeable Lens | Interchangeable Lens |
| Body Type | DSLR | Mirrorless |
| Video Capture |
| Sensor | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Sensor Type | CMOS | CMOS |
| Sensor Size | APS-C | Micro Four Thirds |
| Sensor Dimensions | 23.3 x 15.5 mm | 17.4 x 13 mm |
| Total Pixels | 26.78 Megapixel | 21.8 Megapixel |
| Effective Pixels | 25.73 Megapixel | 20.3 Megapixel |
| Low Pass Filter | ||
| Native ISO Range | 100 - 1,600,000 | 200 - 25,600 |
| Boosted ISO Range | 100 - 25,600 | |
| Sensor Shift High Resolution Mode |
| Photo | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Processor | PRIME V | TruePic VIII |
| Max Image Resolution | 6192 x 4128 | 5184 x 3888 |
| Image Aspect Ratios | 3:2 | 1:1, 4:3, 3:2, 16:9 |
| Image File Format | DNG, JPEG, RAW | JPEG, RAW |
| JPEG Quality Levels | Best, better, good | Super fine, fine, normal |
| Bit Depth | 14-Bit | 12-Bit |
| Color Space | sRGB, Adobe RGB | |
| Timelapse Recording | ||
| White Balance | Presets: Auto, CTE, Cloudy, Color Temperature, Daylight, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten | Presets: Auto, Color Temperature |
| Focus | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Autofocus Modes | Multi-area Center Selective single-point Tracking Single Continuous Touch Face Detection Live View | Multi-area Center Selective single-point Tracking Single Continuous Touch Face Detection Live View |
| Lens Servo | Continuous-Servo AF, Manual Focus, Single-Servo AF | Continuous-Servo AF, Manual Focus, Single-Servo AF |
| AF Detection Range | -4 to +18 EV | |
| Number of Focus Points | 101 | 121 |
| Number of Cross-type Focus Points | 25 | |
| Touch-to-Focus | ||
| Live View Autofocus | ||
| Animal Eye Detection | ||
| Vehicle Tracking Mode | ||
| Insect Tracking Mode | ||
| Contrast Detection for Autofocus | ||
| Phase Detection for Autofocus | ||
| Focusing Screen | Natural-Bright-Matte III focusing screen |
| Optics | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Lens Mount | Pentax KAF2 | Micro Four Thirds |
| Crop Factor | 1.5x | 2x |
| Image Stabilization | Sensor Shift | 5-Axis Sensor Shift |
| Image Stabilization Compensation | 5.5 stops | 4.5 stops |
| Digital Image Stabilization |
| Screen | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Screen Type | Fixed | Tilting |
| Screen Technology | TFT LCD | TFT LCD |
| Touch Screen | ||
| Selfie & Vlogger Friendly LCD Screen | ||
| Screen Size | 3.2" | 3.0" |
| Screen Resolution | 1,620k dot | 1,040k dot |
| Top LCD Screen | ||
| Live View | ||
| Live Composition |
| Viewfinder | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Viewfinder | Optical (pentaprism) | Electronic (OLED) |
| Viewfinder Coverage | 100% | 100% |
| Viewfinder Magnification | 1.05x | 1.23x |
| Viewfinder Magnification (35mm equivalent) | 0.70x | 0.62x |
| Viewfinder Resolution | 2,360k dot | |
| Viewfinder Eyepoint | 20.5 mm | 19.2 mm |
| Diopter Adjustment | -4 to +1 | -4 to +2 |
| Shutter | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Shutter Type | Electronic | Electronic, Mechanical Focal Plane |
| Min Shutter Speed | 30 sec | 60 sec |
| Max Shutter Speed (Mechanical or 1st Curtain) | 1/8000 sec | 1/4000 sec |
| Max Shutter Speed (Electronic) | 1/16000 sec | |
| Max Continuous Shooting (Mechanical or 1st Curtain) | 8.7 fps | |
| Max Continuous Shooting (Electronic) | 15.0 fps | |
| Max Continuous Shooting | 12.0 fps | 15.0 fps |
| Continuous Shooting Resolution/fps/buffer | Mechanical Shutter Up to 12 fps at 25.7 MP for up to 37 Frames (JPEG) / 32 Frames (Raw) Mechanical Shutter Up to 7 fps at 25.7 MP for up to 60 Frames (JPEG) / 37 Frames (Raw) Mechanical Shutter Up to 2.5 fps at 25.7 MP for up to 90 Frames (JPEG) / 39 Frames (Raw) | Mechanical Shutter Up to 8.7 fps at 20.3 MP for Unlimited Frames (Raw) / Unlimited Frames (JPEG) Mechanical Shutter Up to 5 fps at 20.3 MP for Unlimited Frames (Raw) / Unlimited Frames (JPEG) Electronic Shutter Up to 15 fps at 20.3 MP for up to 42 Frames (Raw) / 49 Frames (JPEG) Electronic Shutter Up to 6.3 fps at 20.3 MP for up to 945 Frames (Raw) / Unlimited Frames (JPEG) |
| Flash | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Built-in Flash | ||
| Flash Modes | Auto Auto + Red-eye Reduction Flash On Flash On + Red-eye Reduction Slow- speed Sync Slow-speed Sync + Red-eye P-TTL Contrast-control-sync High-speed sync Wireless sync | Redeye fill-in off redeye slow-sync (1st-curtain) slow sync (1st-curtain) slow sync (2nd-curtain) manual |
| Flash Range | 7.20 m at ISO 200 | |
| Max Flash Sync Speed | 1/200 sec | 1/250 sec |
| Flash Compensation | -2 to +1 EV (1/3, 1/2 EV Steps) | -3 to +3 EV (1/3, 1/2, 1 EV Steps) |
| External Flash Connectivity | ||
| External Flash System | P-TTL | TTL |
| External Flash Connection | Hot Shoe, PC Terminal | Hot Shoe |
| Exposure | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Exposure Metering Modes | Multi Center-weighted Highlight-weighted Spot | Multi Center-weighted Highlight-weighted Spot |
| Exposure Modes | Aperture Priority, Auto, Manual, Program, Sensitivity Priority, Shutter Priority | Aperture Priority, Auto, Manual, Program, Shutter Priority |
| Metering Range | -3 to +20 EV | -2 to +20 EV |
| Exposure Compensation | ±5 EV (1/3 EV, 1/2 EV increments) | ±5 EV (1/3 EV, 1/2 EV, 1 EV increments) |
| Exposure Bracketing | ±5 EV (2, 3, 5 shots at 1/3 EV, 1/2 EV increments) | ±5 EV (3, 5 shots at 2/3 EV, 1 EV increments) |
| Exposure Lock | Button type (timer type: two times the meter operating time set in Custom Setting); Continuous as long as the shutter button is halfway pressed |
| Video | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Internal Recording Modes | H.264/MOV 4K UHD: 3840 x 2160 @ 23.98/29.97 fps Full HD: 1920 x 1080p @ 23.98/29.97/59.94 fps | H.264/MOV 4K UHD: 3840 x 2160 @ 23.98/25/29.97 fps [102 Mbps] Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94 fps [18 to 52 Mbps] HD: 1280 x 720 @ 23.98/25/29.97/50/59.94 fps [10 to 26 Mbps] MOV HD: 1280 x 720 |
| Interval Recording | ||
| Video Formats | MPEG-4, H.264 | MPEG-4, H.264 |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| External Recording Modes | HDMI UHD 4K (3840 x 2160) up to 29.97 fps | |
| Unlimited Video Recording | ||
| Recording Limit | 25 min | 30 min |
| Terminals | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Audio I/O | 1 x 1/8" / 3.5 mm TRS Stereo Headphone Output 1 x 1/8" / 3.5 mm TRS Stereo Microphone Input | 1 x 1/8" / 3.5 mm TRS Stereo Microphone Input |
| Power I/O | 1 x USB-C Input/Output | 1 x Micro-USB Input/Output |
| Other I/O | 1 x USB-C (USB 3.2 / 3.1 Gen 1) Data Input/Output (Shared with Power Input) 1 x 2.5 mm Sub-Mini Control Input 1 x PC Sync Socket Output | 1 x Micro-USB (USB 2.0) Input/Output (Shared with Power Input) |
| USB Speed | USB 3.2 Gen 1x1 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
| HDMI Output | Micro | Micro |
| Speaker | Mono | Mono |
| Built-in Microphone | Stereo | Stereo |
| Microphone Input | ||
| Headphone Output | ||
| Flash Sync Port |
| Connectivity | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Built-in GPS | ||
| Built-In Wi-Fi | ||
| Wi-Fi Version | 802.11b/g/n, 2.4 GHz | 802.11b/g/n, 2.4 GHz |
| Built-In Bluetooth | ||
| Mobile App Compatible | : Android & iOS App Name: Olympus Image Share *As of July, 2020: Check with manufacturer for the most up-to-date compatibility | |
| Remote Control | via wireless | via smartphone |
| Environmental | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Environmental Sealing | ||
| Operating Temperature | 14 to 104°F / -10 to 40°C | 14 to 104°F / -10 to 40°C |
| Storage Temperature | -4 to 140°F / -20 to 60°C | |
| Operating Humidity | 0 to 85% | 30 to 90% |
| Storage Humidity | 10 to 90% |
| Physical | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Dimensions | 135 x 104 x 74 mm (5.31 x 4.09 x 2.91") | 122 x 84 x 49 mm (4.8 x 3.31 x 1.93") |
| Weight (inc. batteries) | 820 g (1.81 lb / 28.92 oz) | 383 g (0.84 lb / 13.51 oz) |
| Box Dimensions (LxWxH) | 8.3 x 6.5 x 5.1" | 8 x 7.7 x 5.7" |
| Package Weight | 3.035 lb | 2.31 lb |
| Power and Storage | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Battery Pack | D-LI90 | BLS-50 |
| Battery Life | 800 shots | 360 shots |
| USB Charging | ||
| Internal Storage | ||
| External Storage | Slot 1: SD/SDHC/SDXC (UHS-II) Slot 2: SD/SDHC/SDXC (UHS-I) | Single Slot: SD/SDHC/SDXC (UHS-II) |
| Other | Pentax K-3 Mark III | Olympus OM-D E-M10 Mark IV |
|---|---|---|
| Self Timer | 2 or 12 sec, custom | |
| Orientation Sensor | ||
| Tripod Mounting Thread | 1 x 1/4"-20 Female (Bottom) | 1 x 1/4"-20 Female (Bottom) |
| Accessory Mount | 1 x Hot Shoe Mount | 1 x Hot Shoe Mount |
| Material of Construction | Magnesium Alloy | |
| Electronic Level Gauge |
For a full review please go to the review page: