• APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000
  • Detailed specifications
  • Sony Alpha ILCE-A6400
  • Pentax K-3 III
Links
Prices: Compare Prices Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Sony A6300
A6300 vs A6400
Pentax K-3 II
K-3 II vs K-3 III
Successor:    
General
Model Number: A6400 K-3 III
Alternate Model Number(s): ILCE-6400 K-3 Mark III
Camera Format: Compact System Camera Pro SLR
Currently Manufactured: Yes Yes
Retail Price: $999.99 $1999.95
Street Price: $798.00 $1,796.95
Date Available: 2019-02-15 2021-04-06
Tripod Mount: Yes Yes
Weight: 18.3 oz (519 g)
includes batteries, kit lens
28.9 oz (820 g)
includes batteries
Size: 4.7 x 2.6 x 2.4 in.
(120 x 67 x 60 mm)
5.3 x 4.1 x 2.9 in.
(135 x 104 x 74 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 24.2 25.7
Sensor Format: APS-C APS-C
Sensor size: 366.6mm2 (23.50mm x 15.60mm) 361.15mm2 (23.30mm x 15.50mm)
Approximate Pixel Pitch: 3.92 microns 3.76 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Optional
Self-Cleaning: Yes Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: Yes No
DxO Sensor Score:    
DxO Color Depth Score (bits):    
DxO Dynamic Range Score (evs):    
DxO Maximum Effective ISO Score (iso):    
Image Capture
Image Resolution: 6000 x 4000 (24.0 MP, 3:2),
4240 x 2832 (12.0 MP, 3:2),
3008 x 2000 (6.0 MP, 3:2),
6000 x 3376 (20.3 MP, 16:9),
4240 x 2400 (10.2 MP, Other),
3008 x 1688 (5.1 MP, 16:9),
4000 x 4000 (16.0 MP, 1:1),
2832 x 2832 (8.0 MP, 1:1),
2000 x 2000 (4.0 MP, 1:1),
12416 x 1586 (19.7 MP, Other),
8192 x 1856 (15.2 MP, Other),
5536 x 2160 (12.0 MP, Other),
3872 x 2160 (8.4 MP, Other)
6192 x 4128 (25.6 MP, 3:2),
4752 x 3168 (15.1 MP, 3:2),
3648 x 2432 (8.9 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2)
Image File Format: JPEG (EXIF 2.31), RAW (14-bit compressed ARW 2.3), RAW+JPEG JPEG (EXIF 2.30), 14-bit RAW (.PEF, .DNG), RAW+JPEG
Continuous-mode frames/second: 11.0 12.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 3840x2160 (30p/​25p/​24p)
1920x1080 (120p/​100p/​60p/​60i/​50p/​50i/​30p/​25p/​24p)
1920x1080 (15p/​12p/​8p/​6p/​4p/​3p/​2p/​1/​p)
3840x2160 (30p/​24p)
1920x1080 (60p/​50p/​30p/​25p/​24p)
Movie File Format: XAVC S / AVCHD format Ver. 2.0 compliant; Audio: LPCM, 2ch / Dolby Digital (AC-3), 2ch, Dolby Digital Stereo Creator MPEG-4 AVC/H.264 (MOV)
Composite Video Out: No No
NTSC/PAL Switchable Video: n/a n/a
Video Usable as Viewfinder: n/a n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Sony E Pentax K (KA/KAF/KAF2/3/4)
Lens: Sony SELP1650 PZ 16-50mm f/3.5-5.6 OSS; 9 elements in 8 groups, 4 aspheric surfaces n/a
Focal Length (35mm equivalent): 24 - 75mm  
Focal Length (actual): 16 - 50mm  
Zoom Ratio: 3.13x  
Aperture Range: f/3.5 - f/22 (W) / f/5.6 - f/36 (T); 7-blade circular aperture  
Integrated ND Filter: No No
Normal Focus Range: 25 cm to Infinity
9.8 in to Infinity
 
Macro Focus Range:    
Filter Thread: 40.5mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: Yes No
Digital Zoom: Yes
Digital Zoom Values: Up to 4x; up to 2x Clear Image Digital Zoom  
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Hybrid Contrast/Phase Detection: Wide (425 points (phase-detection AF), 425 points (contrast-detection AF)) / Zone / Center / Flexible Spot (S/M/L) / Expanded Flexible Spot / Tracking ( Wide / Zone / Center / Flexible Spot (S/M/L) / Expanded Flexible Spot); Enhanced real-time Eye AF and object tracking SAFOX 13 TTL phase-matching - 101 point (25 cross type focus points in the center)
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: EVF / LCD Optical / LCD
Viewfinder Type: EVF type; 1.0cm (0.39-inch) 2.3M-dot XGA OLED, 100% coverage, 1.07x mag. (0.70x 35mm eq.), 23mm eyepoint, -4 to +3 diopter SLR type; eye-level pentaprism, ~100% coverage, 1.05x mag., 20.5mm eyepoint, -4.0 to +1.0 diopter
Focus Peaking: Yes Yes
EVF Resolution: 2,359,296 dots n/a
Viewfinder Magnification (35mm equivalent): 0.70x 1.05x
Viewfinder Magnification (nominal/claimed): 1.07x  
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.2
Rear Display Resolution: 921,600 dots (307,200 px) 1,620,000 dots (540,000 px)
Touchscreen: Yes Yes
Articulating Screen: Yes No
Tilt Swivel Screen: No No
Selfie Screen: Yes No
Max Playback Zoom: 16.7x 16.0x
Top Deck Display: No Yes
Exposure
Maximum ISO (native): 32000 1600000
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-32000; expandable to 102400 Auto, 100-1600000 (1, 1/2 or 1/3 EV steps)
Auto ISO Mode: Yes Yes
White Balance Settings: Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, C. Temp 2500 to 9900K, C Filter G7 to M7 (15-step), Custom, Underwater; AWB micro adjustment Auto, Multi Auto WB, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N:Daylight White, W:Cool White, L:Warm White), Tungsten Light, Flash, CTE, Manual (up to 3 settings), Color Temperature (up to 3 settings), Copying the white balance setting of a captured image
Shutter Speed Range: 1/4000 - 30 sec 1/8000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 1200-zone Evaluative, Center-weighted, Spot, Spot Standard/Large, Entire-screen Average, Highlight TTL open-aperture: Multi-segment with 307K-pixel RGBIr sensor, Center-weighted, Spot, Highlight-weighted
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight, Anti Motion Blur, HDR, Sweep Panorama, Movie/Slow & Quick Motion Scene Analyze Auto, Program, Sensitivity Priority, Shutter Priority, Aperture Priority, Shutter & Aperture Priority; Digital filters (capture): Extract Color, Replace Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Tone Expansion, Bold Monochrome, Grainy Monochrome; HDR: Auto, HDR1, HDR2, HDR3, Advanced HDR, Exposure bracket value adjustable, Automatic composition correction function; Pixel Shift Resolution (On/Off)
Self Timer: 2 , 10, 10 (3 or 5 frames) seconds 2 or 12 seconds
Time Lapse (intervalometer): Yes  
High Resolution Composite: No 24.0 megapixels
Flash
Built-in Flash: Yes No
Flash Modes: Auto, Off, Fill-flash, Rear sync, Slow sync, Red-eye reduction: On/Off P-TTL; Modes available depends on external flash mounted
Flash Guide Number (ISO 100): 6.0 m / 19.7 ft. n/a
Flash Range Description: Lens dependent n/a
Max Flash Sync: 1/160 1/200
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps -2 to +1 EV in 0.5EV steps
External Flash Connection: Multi Interface Shoe Hot Shoe, PC Sync socket
Built-In Wireless Flash Control: No No
Image Storage
Usable Memory Types: MS PRO Duo / SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: UHS-I UHS-II
Other Memory:    
Dual Card Slots: No Yes
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (14-bit compressed ARW 2.3), RAW+JPEG 14-bit RAW (.PEF, .DNG), RAW+JPEG
Movie File Format: XAVC S / AVCHD format Ver. 2.0 compliant; Audio: LPCM, 2ch / Dolby Digital (AC-3), 2ch, Dolby Digital Stereo Creator MPEG-4 AVC/H.264 (MOV)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: Yes Yes
NFC: Yes No
Bluetooth: Yes Yes
Built-In GPS: No No
Microphone Jack: Yes Yes
Headphone Jack: No Yes
External Connections: USB 2.0 High Speed,Bluetooth,WiFi USB 3.0 Super Speed,Bluetooth,WiFi
PictBridge Compliant: No No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional wired or Wi-FI Optional Wired or IR
Connections (extended): Micro (Type-D) HDMI, Multi Interface Shoe, Multi Micro USB USB 3.2 Gen1 (Type-C), Micro B,Micro (Type D) HMDI, External cable switch terminal (2.5mm), X-sync socket, 3.5mm stereo mic input, 3.5mm headphone jack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.41  
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): 0.42  
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 11.0 12.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 87 30
RAW shooting speed in burst mode (fps): 11.1  
Buffer size for RAW shooting in burst mode (frames): 42  
RAW+JPEG shooting speed in burst mode (fps): 11.1  
Buffer Size for RAW+JPEG shooting in burst mode (frames): 42  
Shutter lag (full AF, wide/mid): 0.12 seconds  
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.111 seconds  
Shutter lag (full AF, with flash): 0.17 seconds  
Shutter Lag (prefocused): 0.021 seconds  
Shutter Lag (notes):    
Startup Time: 1.8 seconds  
Play -> Record Time: 1.0 seconds  
Flash cycle time, full power: 2.3 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 410 shots  
Battery Life, Still (CIPA Rating OVF/EVF): 360 shots 800 shots
Battery Life, Video: 125 minutes  
Battery Form Factor: Proprietary NP-FW50 Proprietary D-LI90
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FW50 Lithium-ion rechargeable 1 x Proprietary D-LI90 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: No Yes
Internal Charging Supported: Yes No
Software
Included Software: Free downloads of "Remote", "Viewer" and "Edit" apps Software CD-ROM includes Digital Camera Utility 5
OS Compatibility:    
Miscellaneous
Notes & Features: