| Links | ||
|---|---|---|
| Prices: | Compare Prices | Compare Prices |
| Manufacturer URL: | Manufacturer website | Manufacturer website |
| Predecessor: |
Pentax K-3 II
K-3 II vs K-3 III |
Sony A7 III
A7 III vs A7 IV |
| Successor: | ||
| General | ||
| Model Number: | K-3 III | A7 IV |
| Alternate Model Number(s): | K-3 Mark III | ILCE-7M4 |
| Camera Format: | Pro SLR | Compact System Camera |
| Currently Manufactured: | Yes | Yes |
| Retail Price: | $1999.95 | $2500.00 |
| Street Price: | $1,846.95 | $2,231.33 |
| Date Available: | 2021-04-06 | 2021-12-31 |
| Tripod Mount: | Yes | Yes |
| Weight: |
28.9 oz
(820 g)
includes batteries |
23.2 oz
(658 g)
includes batteries |
| Size: |
5.3 x
4.1 x
2.9 in. (135 x 104 x 74 mm) |
5.2 x
3.8 x
3.1 in. (131 x 96 x 80 mm) |
| Waterproof: | No | No |
| Waterproof Depth: | n/a | n/a |
| Image Sensor | ||
| Sensor Type: | CMOS | CMOS |
| Sensor Manufacturer: | Sony | |
| Effective Megapixels: | 25.7 | 33.0 |
| Sensor Format: | APS-C | 35mm |
| Sensor size: | 361.15mm2 (23.30mm x 15.50mm) | 858.01mm2 (35.90mm x 23.90mm) |
| Approximate Pixel Pitch: | 3.76 microns | 5.12 microns |
| Focal Length Multiplier: | 1.5x | 1.0x |
| Aspect Ratio: | 3:2 | 3:2 |
| Color Filter Type: | RGBG | RGBG |
| Anti Aliasing Filter: | Optional | None |
| Self-Cleaning: | Yes | Yes |
| Sensor shift image stabilization: | Yes | Yes |
| On-Sensor Phase Detect: | No | No |
| DxO Sensor Score: | ||
| DxO Color Depth Score (bits): | ||
| DxO Dynamic Range Score (evs): | ||
| DxO Maximum Effective ISO Score (iso): | ||
| Image Capture | ||
| Image Resolution: |
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) |
7008 x 4672
(32.7 MP,
3:2), 4608 x 3072 (14.2 MP, 3:2), 3504 x 2336 (8.2 MP, 3:2), 7008 x 3944 (27.6 MP, 16:9), 4608 x 2592 (11.9 MP, 16:9), 3504 x 1968 (6.9 MP, 16:9), 6224 x 4672 (29.1 MP, 4:3), 4096 x 3072 (12.6 MP, 4:3), 3120 x 2336 (7.3 MP, Other), 4672 x 4672 (21.8 MP, 1:1), 3072 x 3072 (9.4 MP, 1:1), 2336 x 2336 (5.5 MP, 1:1) |
| Image File Format: | JPEG (EXIF 2.30), 14-bit RAW (.PEF, .DNG), RAW+JPEG | JPEG (8-bit), HEIF (10-bit), RAW (14-bit ARW 2.3), RAW+JPEG, RAW+HEIF |
| Continuous-mode frames/second: | 12.0 | 10.0 |
| Video Capture | ||
| Can take movies: | Yes | Yes |
| Movie Resolution: |
3840x2160 (30p/24p)
1920x1080 (60p/50p/30p/25p/24p) |
3840x2160 (60p/50p/30p/25p/24p)
1920x1080 (120p/60p/50p/30p/25p/24p) |
| Movie File Format: | MPEG-4 AVC/H.264 (MOV) | XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-I (All-Intra, H.264 MP4) |
| 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: | Pentax K (KA/KAF/KAF2/3/4) | Sony E |
| Lens: | n/a | Sony FE 28-70mm f/3.5-5.6 OSS SEL2870 |
| Focal Length (35mm equivalent): | 28 - 70mm | |
| Focal Length (actual): | 28 - 70mm | |
| Zoom Ratio: | 2.50x | |
| Aperture Range: | f/3.5-22 (W) / f/5.6-36 (T) | |
| Integrated ND Filter: | No | No |
| Normal Focus Range: |
40 cm to Infinity 15.7 in to Infinity |
|
| Macro Focus Range: | ||
| Filter Thread: | n/a | 55.0mm |
| Thread Type: | n/a | n/a |
| Optical Image Stabilization: | No | No |
| Digital Zoom: | Yes | |
| Digital Zoom Values: | Up to 4x; 2x Clear Image Digital Zoom | |
| Auto Focus | ||
| Auto Focus: | Yes | Yes |
| Auto Focus Type: | SAFOX 13 TTL phase-matching - 101 point (25 cross type focus points in the center) | Fast Hybrid 4D AF: 759 points (PDAF), 425 points (contrast-detection AF); Wide (759 points (PDAF), 425 points (CDAF))/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot/Tracking (Wide/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot); Touch AF |
| Auto Focus Assist Light? | Yes | Yes |
| Manual Focus: | Yes | Yes |
| Viewfinder | ||
| Viewfinder: | Optical / LCD | EVF / LCD |
| Viewfinder Type: | SLR type; eye-level pentaprism, ~100% coverage, 1.05x mag., 20.5mm eyepoint, -4.0 to +1.0 diopter | EVF: 1.3 cm (0.5 type) 3.68M-dot UXGA color OLED, 100% coverage, 0.78x magnification, -4.0 to +3.0 diopter, 23mm eyepoint from the eyepiece lens |
| Focus Peaking: | Yes | Yes |
| EVF Resolution: | n/a | 3,686,400 dots (1,228,800 pixels) |
| Viewfinder Magnification (35mm equivalent): | 1.05x | |
| Viewfinder Magnification (nominal/claimed): | ||
| Display | ||
| Eye-level Viewfinder: | Yes | Yes |
| Rear Display: | Yes | Yes |
| Rear Display Size (inches): | 3.2 | 3.0 |
| Rear Display Resolution: | 1,620,000 dots (540,000 px) | 3,680,000 dots |
| Touchscreen: | Yes | Yes |
| Articulating Screen: | No | Yes |
| Tilt Swivel Screen: | No | Yes |
| Selfie Screen: | No | Yes |
| Max Playback Zoom: | 16.0x | 13.3x |
| Top Deck Display: | Yes | No |
| Exposure | ||
| Maximum ISO (native): | 1600000 | 51200 |
| Minimum ISO (native): | 100 | 100 |
| ISO Settings: | Auto, 100-1600000 (1, 1/2 or 1/3 EV steps) | Auto, 100 - 51200, expandable to 50 - 204800 |
| Auto ISO Mode: | Yes | Yes |
| White Balance Settings: | 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 | Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (4 settings), Flash, Custom, Color Temp./ Filter (2500-9900K with 57-step Magenta/Green and 29-step Amber/Blue compensation), Underwater |
| Shutter Speed Range: | 1/8000 - 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: | TTL open-aperture: Multi-segment with 307K-pixel RGBIr sensor, Center-weighted, Spot, Highlight-weighted | 1200-zone Evaluative Multi-segment, Center-weighted, Spot (Standard/Large), Entire Screen Avg., Highlight |
| Program Auto Exposure: | Yes | Yes |
| Aperture Priority: | Yes | Yes |
| Shutter Priority: | Yes | Yes |
| Full Manual Exposure: | Yes | Yes |
| Creative Exposure Modes: | 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) | 3 Custom Settings; Creative Look; Slow & Quick Motion; HDR: Auto Exposure Difference, Exposure difference Level (1-6 EV at 1.0 EV step) |
| Self Timer: | 2 or 12 seconds | 2, 5, 10; 3/5 shots after 2/5/10 seconds |
| Time Lapse (intervalometer): | ||
| High Resolution Composite: | 24.0 megapixels | No |
| Flash | ||
| Built-in Flash: | No | No |
| Flash Modes: | P-TTL; Modes available depends on external flash mounted | Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync |
| Flash Guide Number (ISO 100): | n/a | n/a |
| Flash Range Description: | n/a | n/a |
| Max Flash Sync: | 1/200 | 1/250 |
| Flash Exposure Compensation: | -2 to +1 EV in 0.5EV steps | +/- 3.0 EV in 0.3EV steps |
| External Flash Connection: | Hot Shoe, PC Sync socket | Enhanced Multi Interface Hot Shoe, Sync Terminal |
| Built-In Wireless Flash Control: | No | No |
| Image Storage | ||
| Usable Memory Types: | SD / SDHC / SDXC | MS PRO Duo / SD / SDHC / SDXC / CFexpress |
| UHS Support: | UHS-II | UHS-I |
| Other Memory: | 2x:CFexpress Type A, SD UHS-II | |
| Dual Card Slots: | Yes | Yes |
| RAW Capture Support: | Yes | Yes |
| Uncompressed Format: | 14-bit RAW (.PEF, .DNG), RAW+JPEG | RAW (14-bit ARW 2.3), RAW+JPEG, RAW+HEIF |
| Movie File Format: | MPEG-4 AVC/H.264 (MOV) | XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-I (All-Intra, H.264 MP4) |
| Included Memory: | No memory included | No memory included |
| Included Memory Type: | ||
| Connectivity | ||
| Built-In Wi-Fi: | Yes | Yes |
| NFC: | No | Yes |
| Bluetooth: | Yes | Yes |
| Built-In GPS: | No | No |
| Microphone Jack: | Yes | Yes |
| Headphone Jack: | Yes | Yes |
| External Connections: | USB 3.0 Super Speed,Bluetooth,WiFi | USB 2.0 High Speed,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 IR | Yes, via USB or Wi-Fi |
| Connections (extended): | 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 | USB-C (USB 3.2 Gen2, 10Gbps), Multi-Terminal Micro USB (with remote support), Type-A HDMI, 3.5mm Microphone and Headphone jacks |
| Performance Timing | ||
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): | ||
| 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): | ||
| Camera penalizes early shutter press? | ||
| JPEG shooting speed in burst mode (fps, max resolution): | 12.0 | 10.0 |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): | 30 | 828 |
| RAW shooting speed in burst mode (fps): | ||
| Buffer size for RAW shooting in burst mode (frames): | ||
| RAW+JPEG shooting speed in burst mode (fps): | ||
| Buffer Size for RAW+JPEG shooting in burst mode (frames): | ||
| Shutter lag (full AF, wide/mid): | ||
| Shutter lag (full AF, tele): | ||
| Shutter lag (full AF, live view - DSLR): | ||
| Shutter lag (prefocused, live view - DSLR): | ||
| Shutter Lag (manual focus): | ||
| Shutter lag (full AF, with flash): | ||
| Shutter Lag (prefocused): | ||
| Shutter Lag (notes): | ||
| Startup Time: | ||
| Play -> Record Time: | ||
| Flash cycle time, full power: | ||
| Power | ||
| Battery Life, Stills (CIPA Rating Monitor/Live View): | ||
| Battery Life, Still (CIPA Rating OVF/EVF): | 800 shots | |
| Battery Life, Video: | ||
| Battery Form Factor: | Proprietary D-LI90 | Proprietary |
| Usable Battery Types: | Lithium-ion rechargeable | NP-FZ100 Lithium-ion rechargeable |
| Batteries Included: | 1 x Proprietary D-LI90 Lithium-ion rechargeable | 1 x Proprietary NP-FZ100 Lithium-ion rechargeable |
| Battery Charger Included (dedicated charger or AC/USB adapter): | Yes | Yes |
| Dedicated Battery Charger Included: | Yes | Yes |
| Internal Charging Supported: | No | Yes |
| Software | ||
| Included Software: | Software CD-ROM includes Digital Camera Utility 5 | Capture One Express (for Sony) free download |
| OS Compatibility: | Windows, Mac OS X | |
| Miscellaneous | ||
| Notes & Features: | ||
