In depth comparison and review of Pentax K-3 and Fujifilm GFX 100. 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-3 | Fujifilm GFX 100 |
|---|
| Product Type | Digital camera - SLR with movie recording | Digital camera - 4K - mirrorless system with movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 10 cm | 16.36 cm |
| Width | 13.15 cm | 15.62 cm |
| Depth | 7.75 cm | 10.29 cm |
| Weight | 715 g | 1.155 kg |
| Weight Details | - | Camera body only: 1.155 kg Camera with battery and memory card: 1.32 kg Camera with EVF, battery and memory card: 1.4 kg |
| Body Material | Magnesium alloy | Magnesium alloy |
| Enclosure Colour | Black | - |
| Protection | Weatherproof, freezeproof, dust-resistant | Weatherproof, freezeproof, dust-resistant |
| SENSOR | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Sensor Resolution | 23.35 Megapixel | 100 Megapixel |
|---|---|---|
| Optical Sensor Type | CMOS | CMOS |
| Total Pixels | 24,710,000 pixels | - |
| Effective Sensor Resolution | 23,350,000 pixels | 102,000,000 pixels |
| Optical Sensor Size | APS-C (23.5 x 15.6 mm) | Medium Format (43.8 x 32.9 mm) |
| Frame Rate (Max Resolution) | - | 30 fps |
| Sensor Dust Reduction | - | Yes |
| Sensor Features | Dust Reduction (image sensor vibration), anti-aliasing simulator function | Ultrasonic vibration |
| Image Stabiliser | Optical (image sensor shift mechanism) | Optical (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | Yes | Yes |
| Sensors | Dust alert sensor, digital level metre | Digital level metre |
| PROCESSOR | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Image Processor | PRIME III | X-Processor 4 |
|---|
| LENS | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Lens Mounting Type | Pentax K | Fujifilm G Mount |
|---|
| FOCUSING | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Auto Focus | TTL phase detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 27 | - |
| Face Detection | Yes | Eye Detect AF, face-priority AF function |
| VIEWFINDER | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Viewfinder Type | Optical - fixed eye-level pentaprism | Electronic - OLED |
|---|---|---|
| Viewfinder Colour Support | - | Colour |
| Viewfinder Diagonal Size | - | 0.5" |
| Viewfinder Resolution | - | 5,760,000 pixels |
| Optical Viewfinder Field Coverage | 100% | 100% |
| Optical Viewfinder Magnification | 0.95x | 0.86x |
| Optical Viewfinder Dioptric Correction Range | -2.5 to +1.5 | -4 to +2 |
| Interchangeable | - | Yes |
| Interchangeable Focusing Screens | Yes | - |
| Features | - | Viewfinder brightness control, auto eye sensor |
| EXPOSURE & WHITE BALANCE | Pentax K-3 | Fujifilm GFX 100 |
|---|
| ISO (Max) | 51200 | 102400 |
|---|---|---|
| Native ISO | 100-51200 | 100-12800 |
| Extended ISO (Max) | - | 25600 (H1), 51200 (H2), 102400 (H3) |
| Extended ISO (Min) | - | 50 |
| Light Sensitivity | ISO 100-51200, ISO auto (100-51200) | ISO 50, ISO auto, ISO 102400, ISO 51200, ISO 25600, ISO 100-12800 |
| Exposure Metering | Multi-segment, centre-weighted, spot | Multi-segment, centre-weighted, average, spot (2%) |
| Exposure Metering Zones | - | 256 |
| Exposure Modes | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority | Automatic, manual, aperture-priority, shutter-priority |
| Bracketing Modes | - | Dynamic Range Bracketing, Film Simulation Bracketing, focus bracketing, ISO sensitivity bracketing, white balance bracketing |
| Special Effects | Soft, Slim, Pastel, fisheye, natural, bright, Vibrant, Sketch, monochrome, Muted, landscape, portrait, Water Colour, miniature, Cross Process, Retro, Colour Extract, Toy camera, starburst, High contrast, Colour Invert, Bleach Bypass, Posterisation, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold | Chrome, Film Simulation, Grainy Film |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Cloudy, tungsten light, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) | - |
| Shutter Type | Mechanical electronically-controlled | Mechanical, electronic |
| Max Shutter Speed | 1/8000 sec | 1/16000 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 1/3 EV steps |
| Auto Exposure Bracketing | 2, 3 or 5 steps | 2, 3, 5, 7, 9 steps in 1/3 - 3 EV steps |
| White Balance Bracketing | - | Yes |
| X-sync Speed | 1/180 sec | 1/125sec |
| Exposure Range | EV -3-20 (ISO 100) | - |
| DISPLAY | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Type | 3.2" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | - | Yes |
| Display Format | 1,037,000 pixels | 2,360,000 pixels |
| Display Form Factor | Built-in | Folding |
| Display Features | Colour control | Display brightness control, display colour control |
| FLASH | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Camera Flash | Pop-up flash | - |
|---|---|---|
| Guide Number (m / ISO 100) | 13 | - |
| 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, wireless off-camera control | - |
| VIDEOGRAPHY / CAMCORDER | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Digital Video Format | AVI, MJPEG, H.264 | H.264, HEVC, H.265 |
|---|---|---|
| Image Recording Format | JPEG, DNG (RAW) + JPEG, DNG (RAW) | JPEG, TIFF, RAW, RAW + JPEG |
| Max Video Resolution | 1920 x 1080 | 4096 x 2160 |
| Microphone Operation Mode | Mono | - |
| Microphone Features | Sensitivity control | - |
| MEMORY | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Memory Card Slot | Dual SD card | SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC Memory Card, SDHC UHS-I 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 | RAW 6016 x 4000 JPEG 6016 x 4000 JPEG 4608 x 3072 JPEG 3072 x 2048 JPEG 1920 x 1280 |
11648 x 8736 11648 x 7768 11648 x 6552 8736 x 8736 11648 x 4304 10298 x 8736 10192 x 8736 8256 x 6192 8256 x 5504 8256 x 4640 6192 x 6192 8256 x 3048 7744 x 6192 7232 x 6192 4000 x 3000 4000 x 2664 4000 x 2248 2992 x 2992 4000 x 1480 3744 x 3000 3504 x 3000 |
| Video Capture | H.264 - 1920 x 1080 - 30 fps H.264 - 1920 x 1080 - 25 fps H.264 - 1920 x 1080 - 24 fps H.264 - 1280 x 720 - 60 fps H.264 - 1280 x 720 - 50 fps H.264 - 1280 x 720 - 30 fps H.264 - 1280 x 720 - 25 fps H.264 - 1280 x 720 - 24 fps H.264 - 1920 x 1080 - 60 fps H.264 - 1920 x 1080 - 50 fps |
4096 x 2160 3840 x 2160 2048 x 1080 1920 x 1080 |
| BATTERY AND CHARGING | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Battery Type | Pentax D-Li90 Lithium Ion | Fujifilm NP-T125 Lithium Ion |
|---|---|---|
| Details | Pentax D-Li90 Li-ion rechargeable battery (included) | 2 x Fujifilm NP-T125 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 560 shots (50% flash usage) Photo shooting - 720 shots (flash off) Playback - 6.2 hours |
Photo shooting - 800 shots Video recording - 170 minutes (4K resolution) |
| CONNECTIONS | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Interface | HDMI, USB 3.0 | HDMI, USB 3.0, IEEE 802.11a/b/g/n/ac |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | Exif Print support | Exif Print support |
| Flash Terminal | Hot shoe | Hot shoe |
| Connector Type | USB 2.0 HDMI output Microphone Headphones Remote control |
USB 3.0 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone (mini-phone stereo 3.5 mm) Headphones (mini-phone stereo 3.5 mm) Remote control (sub-mini phone 2.5 mm) DC power input |
| FEATURES | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Self-Timer Delay | 2sec, 12sec | 10 sec, 2sec |
|---|---|---|
| Continuous Shooting Speed | 8.3 frames per second | 5 frames per second |
| HDR Mode | Auto HDR mode | - |
| Additional Features | Audio recording, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, saturation control, GPS ready, interval shooting mode, mirror lock, in-camera RAW processing, peripheral illumination correction, HDR image enhancement technology, Shade Correction, Eye-Fi Card Ready, NR Slow Shutter, High ISO NR, Dynamic Range Compensation, no anti-aliasing filter, Lens Distortion Correction, primary colour filter, Interval Movie Record, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, Flucard Ready | Auto power save, date/time stamp, depth-of-field preview button, sharpness control, histogram display, colour control, AE lock, AF lock, in-camera red-eye removal, highlight point display, Automatic Pixel Mapping (APM), in-camera RAW processing, noise reduction over long exposures, Lens Modulation Optimizer (LMO), noise reduction, multiple exposure capture |
| OTHERS | Pentax K-3 | Fujifilm GFX 100 |
|---|
| Included Accessories | Battery charger, body cap, shoulder strap, USB cable, eyecup, shoe cap, battery grip terminal cover, sync terminal cover | Battery charger, body cap, shoulder strap, viewfinder, power plug adapter, strap clip, cable protector, strap clip lock |
|---|---|---|
| Software | Drivers & Utilities | - |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | -10 °C | -10 °C |
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