Sony Alpha5100 ILCE-5100 vs. Pentax K-3 Mark III

Camera Comparison, Reviews and Tests

Side by side comparison and review of Sony Alpha5100 ILCE-5100 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.

Camera Specifications Comparison

Sony Alpha5100 ILCE-5100 vs. Pentax K-3 Mark III Comparison Chart
DESIGN AND DIMENSIONS Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Product Type Digital camera - mirrorless system Digital camera - 4K - SLR with Live View mode, movie recording
Lens Included Body only Body only
Height 6.28 cm 10.35 cm
Width 10.96 cm 13.45 cm
Depth 3.57 cm 7.35 cm
Weight 224 g 735 g
Weight Details - Camera body only: 735 g
Camera with battery and memory card: 820 g
Body Material - Magnesium alloy
Enclosure Colour Black Black | Silver
Protection - Weatherproof, dust-resistant
Digital Zoom 4x -
Navigation - GPS receiver
SENSOR Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Sensor Resolution 24.3 Megapixel 25.73 Megapixel
Optical Sensor Type Exmor APS HD CMOS CMOS
Total Pixels 24,700,000 pixels 26,780,000 pixels
Effective Sensor Resolution 24,300,000 pixels 25,730,000 pixels
Optical Sensor Size APS-C (23.5 x 15.6 mm) APS-C (23.3 x 15.5 mm)
Frame Rate (Max Resolution) - 30 fps
Sensor Dust Reduction Yes -
Sensor Features Anti-Dust coating Dust Reduction (image sensor vibration), anti-aliasing simulator function
Image Stabiliser - Optical SR II (5-axis image sensor shift mechanism)
Built-in Optical Image Stabiliser - Yes
Sensors - Digital level metre
PROCESSOR Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Image Processor BIONZ X -
LENS Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Lens Mounting Type Sony E-mount Pentax K
FOCUSING Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Auto Focus TTL contrast and phase detection TTL contrast and phase detection
Auto Focus Points (Zones) Qty 179 101
Auto Focus Features Predictive Focus Control -
AE/AF Control Eye detection AF, Predictive AI Servo AF Auto-area AF, Zone AF, Expanded area AF
Face Detection Eye Detect AF, Smile Shutter Yes
VIEWFINDER Sony Alpha5100 ILCE-5100 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
Field of View Crop Factor 1.5 -
Features - Auto eye sensor
EXPOSURE & WHITE BALANCE Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
ISO (Max) 25600 1600000
Native ISO 100-25600 -
Light Sensitivity ISO 100-25600, ISO auto (100-25600) ISO auto, ISO 100-1600000
Exposure Metering Multi-segment, centre-weighted, spot Multi-segment, centre-weighted, spot, highlight-weighted
Exposure Metering Zones 1200 -
Exposure Modes Programme, bulb, automatic, 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
Shooting Programs Landscape, portrait mode, macro, night portrait, night scene, sports mode, sunset, handheld twilight, anti-motion blur -
Special Effects Illustration, Water Colour, miniature, Retro, partial colour, Toy camera, Posterisation, High contrast monochrome, Pop Colour, HDR Painting, Rich-tone monochrome, Soft High-key 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, cloudy, Flash, daylight, shade, fluorescent light (cool white), fluorescent light (warm white), Underwater, 2500K - 9900K, fluorescent light (daylight white) 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 1/4000 sec 1/8000 sec
Min Shutter Speed 30 sec 30 sec
Exposure Compensation ±3 EV range, in 1/3 EV steps ±5 EV range, in 1/2 or 1/3 EV steps
Auto Exposure Bracketing 3 steps -
White Balance Bracketing Yes -
X-sync Speed 1/160 sec 1/200sec
Exposure Range EV -1-20 (ISO 100) EV -3-20 (ISO 100)
DISPLAY Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Type 3" LCD display 3.2" LCD display
Touch Screen Yes Yes
Display Format 921,600 pixels 1,620,000 pixels
Display Form Factor Folding Built-in
Display Features Contrast control, display brightness control Colour control, contrast control, display brightness control, night vision LCD display
FLASH Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Camera Flash Pop-up flash -
Guide Number (m / ISO 100) 4 -
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 -
VIDEOGRAPHY / CAMCORDER Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Video Recording Modes FH, FX, PS -
Digital Video Format AVCHD, H.264, XAVC S H.264, MOV
Image Recording Format JPEG, RAW, RAW + JPEG JPEG, DNG (RAW), PEF (RAW)
Max Video Resolution 1920 x 1080 3840 x 2160
Surround Sound Dolby Digital AC-3 (2 channel) recording -
Microphone Operation Mode Stereo Stereo
Microphone Features - Wind noise reduction, sensitivity control
MEMORY Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Memory Card Slot Memory Stick PRO Duo card, SD card Dual SD card
Supported Memory Cards SD Memory Card, Memory Stick PRO Duo, SDXC Memory Card, SDHC Memory Card, Memory Stick PRO-HG Duo, SDHC UHS-I Memory Card, SDXC UHS-I Memory Card, Memory Stick XC-HG Duo 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 JPEG 6000 x 4000
JPEG 4240 x 2832
JPEG 3008 x 2000
JPEG 6000 x 3376
JPEG 4240 x 2400
JPEG 3008 x 1688
RAW 6192 x 4128
JPEG 6192 x 4128
JPEG 4752 x 3168
JPEG 3648 x 2432
JPEG 1920 x 1280
Video Capture AVCHD - 1920 x 1080 - 60 fps - 28Mbps
AVCHD - 1920 x 1080 - 60 fps - 24Mbps
AVCHD - 1920 x 1080 - 60 fps - 17Mbps
AVCHD - 1920 x 1080 - 24 fps - 24Mbps
H.264 - 1920 x 1080 - 24 fps - 17Mbps
H.264 - 1440 x 1080 - 30 fps - 12Mbps
H.264 - 640 x 480 - 30 fps - 3Mbps
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 Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Battery Type Sony NP-FW50 Lithium Ion Pentax D-Li90 Lithium Ion
Details Sony NP-FW50 Li-ion rechargeable battery - 1080 mAh (included) Pentax D-Li90 Li-ion rechargeable battery (included)
Battery Life Photo shooting - 400 shots
Video recording - 1.84 hours
Photo shooting - 800 shots
Playback - 250 minutes
CONNECTIONS Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Interface HDMI, IEEE 802.11b/g/n, NFC (Near Field Communication) HDMI, USB-C, IEEE 802.11b/g/n, Bluetooth 4.2
Connectivity Features Remote control via mobile devices, remote live view Remote control via mobile devices, remote live view, Wireless Image Transfer
Print Standard DPOF support, Exif Print support, PRINT Image Matching Exif Print support
Computer Connectivity - Mac, Windows
Flash Terminal Hot shoe Hot shoe, PC terminal
Connector Type USB 2.0
HDMI output (19 pin micro HDMI Type D)
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 Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Self-Timer Delay 10 sec, 2sec 2sec, 12sec
Continuous Shooting Speed 3 frames per second, 6 frames per second 2.5 frames per second, 12 frames per second, 7 frames per second
HDR Mode Auto HDR mode Auto HDR mode
Additional Features Built-in speaker, RGB primary colour filter, sharpness control, digital image rotation, camera orientation detection, histogram display, AE lock, AF lock, saturation control, Sweep Panorama technology, Dynamic Range Optimizer, face detection, USB charging, built-in help guide, 24p Cinema Mode, peripheral illumination correction, Dolby Digital Stereo Creator, Chromatic Aberration Compensation (CAC), Anti-motion Blur Mode, Intelligent AUTO (iAUTO), High ISO NR, Superior Auto mode, Clear Image Zoom, noise reduction over long exposures, Lens Distortion Correction, PlayMemories Camera Apps support, BRAVIA Sync function, PhotoTV HD, Auto Object Framing 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 Sony Alpha5100 ILCE-5100 Pentax K-3 Mark III
Included Accessories Lens hood, dust cap, body cap, lens cap, shoulder strap, AC power adaptor, micro-USB cable 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
Min Operating Temperature - -10 °C
Service & Support - Limited warranty - 1 year
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