Side by side comparison and review of Sigma fp and Pentax K-3 Mark III. Compare design, sensors, zoom functions, batteries and other key specifications and features to simplify the choice of your perfect digital camera. Our goal is to make it easier for you to decide on the camera that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sigma fp | Pentax K-3 Mark III |
|---|
| Product Type | Digital camera - 4K - mirrorless system | Digital camera - 4K - SLR with Live View mode, movie recording |
|---|---|---|
| Lens Included | Body only | Body only |
| Height | 6.99 cm | 10.35 cm |
| Width | 11.26 cm | 13.45 cm |
| Depth | 4.53 cm | 7.35 cm |
| Weight | 370 g | 735 g |
| Weight Details | Camera body only: 370 g Camera with battery and memory card: 422 g |
Camera body only: 735 g Camera with battery and memory card: 820 g |
| Body Material | Aluminium | Magnesium alloy |
| Enclosure Colour | - | Black | Silver |
| Protection | Splashproof, dust-resistant | Weatherproof, dust-resistant |
| Navigation | - | GPS receiver |
| SENSOR | Sigma fp | Pentax K-3 Mark III |
|---|
| Sensor Resolution | 24.6 Megapixel | 25.73 Megapixel |
|---|---|---|
| Optical Sensor Type | BSI-CMOS | CMOS |
| Total Pixels | 25,300,000 pixels | 26,780,000 pixels |
| Effective Sensor Resolution | 24,600,000 pixels | 25,730,000 pixels |
| Optical Sensor Size | Full Frame (35.9 x 23.1 mm) | APS-C (23.3 x 15.5 mm) |
| Frame Rate (Max Resolution) | 30 fps | 30 fps |
| Sensor Features | - | Dust Reduction (image sensor vibration), anti-aliasing simulator function |
| Image Stabiliser | Electronic | Optical SR II (5-axis image sensor shift mechanism) |
| Built-in Optical Image Stabiliser | - | Yes |
| Sensors | - | Digital level metre |
| LENS | Sigma fp | Pentax K-3 Mark III |
|---|
| Lens Mounting Type | L-Mount | Pentax K |
|---|
| FOCUSING | Sigma fp | Pentax K-3 Mark III |
|---|
| Auto Focus | TTL contrast detection | TTL contrast and phase detection |
|---|---|---|
| Auto Focus Points (Zones) Qty | 49 | 101 |
| Auto Focus Features | Focus Peaking function, Predictive Focus Control | - |
| AE/AF Control | Face-priority AF, Subject-tracking AF, Eye detection AF, Predictive AI Servo AF | Auto-area AF, Zone AF, Expanded area AF |
| Face Detection | Face-priority AF function | Yes |
| VIEWFINDER | Sigma fp | Pentax K-3 Mark III |
|---|
| Viewfinder Type | - | Optical - fixed eye-level pentaprism |
|---|---|---|
| Optical Viewfinder Field Coverage | - | 100% |
| Optical Viewfinder Magnification | - | 1.05x |
| Optical Viewfinder Dioptric Correction Range | - | -4 to +1 |
| Features | - | Auto eye sensor |
| EXPOSURE & WHITE BALANCE | Sigma fp | Pentax K-3 Mark III |
|---|
| ISO (Max) | 102400 | 1600000 |
|---|---|---|
| Native ISO | 100-25600 | - |
| Extended ISO (Max) | 102400 | - |
| Extended ISO (Min) | 6 | - |
| Light Sensitivity | ISO 50, ISO 102400, ISO 51200, ISO 100-25600, ISO 6, ISO 12, ISO 25 | ISO auto, ISO 100-1600000 |
| Exposure Metering | Evaluative, centre-weighted, spot | Multi-segment, centre-weighted, spot, highlight-weighted |
| Exposure Modes | Programme, manual, aperture-priority, shutter-priority | Programme, bulb, automatic, manual, aperture-priority, shutter-priority, ISO priority, shutter & aperture priority |
| Bracketing Modes | - | Depth of field bracketing, motion bracketing |
| Special Effects | Cinema, Neutral, Vivid, monochrome, landscape, portrait, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Standard, Teal & Orange | Soft, Slim, fisheye, natural, bright, Vibrant, monochrome, Muted, Flat, landscape, portrait, miniature, Cross Process, Retro, Colour Extract, Toy camera, High contrast, Colour Invert, Bleach Bypass, Radiant, Reversal Film, Shading, Tone Expansion, Bold Monochrome, Unicolour Bold, Colour replace, Grainy Monochrome |
| White Balance | Custom, automatic, presets | Custom, automatic, presets |
| White Balance Presets | Incandescent, fluorescent, Flash, daylight, shade, overcast | Cloudy, tungsten light, daylight, shade, fluorescent light (cool white), fluorescent light (daylight), fluorescent light (warm white), Color Temperature Enhancement (CTE), fluorescent light (daylight white) |
| Shutter Type | Electronic | Electronic, mechanical electronically-controlled |
| Max Shutter Speed | 1/8000 sec | 1/8000 sec |
| Min Shutter Speed | 30 sec | 30 sec |
| Exposure Compensation | ±5 EV range, in 1/3 EV steps | ±5 EV range, in 1/2 or 1/3 EV steps |
| Auto Exposure Bracketing | 3, 5 steps in 1/3 EV step | - |
| X-sync Speed | - | 1/200sec |
| Exposure Range | EV -5-18 (ISO 100) | EV -3-20 (ISO 100) |
| DISPLAY | Sigma fp | Pentax K-3 Mark III |
|---|
| Type | 3.15" LCD display | 3.2" LCD display |
|---|---|---|
| Touch Screen | Yes | Yes |
| Display Format | 2,100,000 pixels | 1,620,000 pixels |
| Display Form Factor | Built-in | Built-in |
| Display Features | - | Colour control, contrast control, display brightness control, night vision LCD display |
| VIDEOGRAPHY / CAMCORDER | Sigma fp | Pentax K-3 Mark III |
|---|
| Digital Video Format | H.264, MOV, CinemaDNG | H.264, MOV |
|---|---|---|
| Image Recording Format | JPEG, RAW, RAW + JPEG | JPEG, DNG (RAW), PEF (RAW) |
| Max Video Resolution | 3840 x 2160 | 3840 x 2160 |
| Audio Signal Format | Linear PCM | - |
| Microphone Operation Mode | Stereo | Stereo |
| Microphone Features | - | Wind noise reduction, sensitivity control |
| MEMORY | Sigma fp | Pentax K-3 Mark III |
|---|
| Memory Card Slot | SD card | Dual SD card |
|---|---|---|
| Supported Memory Cards | SD Memory Card, SDXC Memory Card, SDHC 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 | No |
| Image Storage | RAW 6000 x 4000 RAW 3840 x 2560 - 1.5x crop RAW 3008 x 2000 RAW 1920 x 1080 - 1.5x crop |
RAW 6192 x 4128 JPEG 6192 x 4128 JPEG 4752 x 3168 JPEG 3648 x 2432 JPEG 1920 x 1280 |
| Video Capture | 3840 x 2160 p - 29.97 fps 3840 x 2160 p - 25 fps 3840 x 2160 p - 23.98 fps 1920 x 1080 p - 119.88 fps 1920 x 1080 p - 100 fps 1920 x 1080 p - 59.94 fps 1920 x 1080 p - 50 fps 1920 x 1080 p - 29.97 fps 1920 x 1080 p - 25 fps 1920 x 1080 p - 23.98 fps |
H.264 - 3840 x 2160 p - 30 fps H.264 - 3840 x 2160 p - 24 fps H.264 - 1920 x 1080 p - 60 fps H.264 - 1920 x 1080 p - 30 fps H.264 - 1920 x 1080 p - 24 fps |
| BATTERY AND CHARGING | Sigma fp | Pentax K-3 Mark III |
|---|
| Battery Type | Sigma BP-51 Lithium Ion | Pentax D-Li90 Lithium Ion |
|---|---|---|
| Details | Sigma BP-51 Li-ion rechargeable battery (included) | Pentax D-Li90 Li-ion rechargeable battery (included) |
| Battery Life | Photo shooting - 280 shots Video recording - 70 minutes |
Photo shooting - 800 shots Playback - 250 minutes |
| CONNECTIONS | Sigma fp | Pentax K-3 Mark III |
|---|
| Interface | HDMI, USB 3.1 | HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2 |
|---|---|---|
| Connectivity Features | - | Remote control via mobile devices, remote live view, Wireless Image Transfer |
| Print Standard | - | Exif Print support |
| Computer Connectivity | - | Mac, Windows |
| Tripod Mount Connection Point | 3 x 1/4" sockets | - |
| Flash Terminal | Hot shoe | Hot shoe, PC terminal |
| Connector Type | USB 3.2 Gen 1 (USB Type-C) HDMI output (19 pin micro HDMI Type D) Microphone / remote control (mini-phone stereo 3.5 mm) |
USB 3.2 Gen 1 (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) |
| FEATURES | Sigma fp | Pentax K-3 Mark III |
|---|
| Self-Timer Delay | 10 sec, 2sec | 2sec, 12sec |
|---|---|---|
| Continuous Shooting Speed | 3 frames per second, 5 frames per second, 18 frames per second | 2.5 frames per second, 12 frames per second, 7 frames per second |
| HDR Mode | Multi Frame HDR mode | Auto HDR mode |
| Additional Features | Built-in speaker, AE lock, AF lock, USB charging, Bayer mosaic RGB filter, no Optical Low Pass Filter (OLFP) | Audio recording, date/time stamp, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, cropping an image, resizing an image, interval shooting mode, in-camera film editing, in-camera RAW processing, peripheral illumination correction, horizon correction, NR Slow Shutter, High ISO NR, Lens Distortion Correction, primary colour filter, Automatic composition correction function, colour moire correction, Lateral Chromatic Aberration Correction, diffraction correction, Pixel Shift Resolution technology, colour fringe correction, multiple exposure capture, GPS stamp, D-range correction |
| OTHERS | Sigma fp | Pentax K-3 Mark III |
|---|
| Included Accessories | Carrying strap, body cap, AC power adaptor, USB cable, strap holder, hot shoe unit | Eyepiece cover, carrying strap, battery charger, body cap, USB cable, eyecup, shoe cap, sync terminal cover |
|---|---|---|
| Software | - | Digital Camera Utility 5 |
| Max Operating Temperature | 40 °C | 40 °C |
| Min Operating Temperature | 0 °C | -10 °C |
| Service & Support | - | Limited warranty - 1 year |
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