- 35mm 858.0mm2
- 33.0 megapixels
- ISO 100 - 51,200
- Go in depth with our full Sony A7 IV Review.
- See real-world photos taken with the A7 IV.
Links | ||
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Prices: | Compare Prices | Compare Prices |
Manufacturer URL: | Manufacturer website | Manufacturer website |
Predecessor: |
Sony A7 III
A7 III vs A7 IV |
|
Successor: | ||
General | ||
Model Number: | K-S1 | A7 IV |
Alternate Model Number(s): | ILCE-7M4 | |
Camera Format: | SLR | Compact System Camera |
Currently Manufactured: | No | Yes |
Retail Price: | $799.95 | $2500.00 |
Street Price: | $501.65 | $2,231.33 |
Date Available: | 2014-09-15 | 2021-12-31 |
Tripod Mount: | Yes | Yes |
Weight: |
27.0 oz
(765 g)
includes batteries, kit lens |
23.2 oz
(658 g)
includes batteries |
Size: |
4.8 x
3.7 x
2.8 in. (121 x 93 x 70 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: | 20.1 | 33.0 |
Sensor Format: | APS-C | 35mm |
Sensor size: | 366.6mm2 (23.50mm x 15.60mm) | 858.01mm2 (35.90mm x 23.90mm) |
Approximate Pixel Pitch: | 4.29 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: | 78 | |
DxO Color Depth Score (bits): | 23.5 | |
DxO Dynamic Range Score (evs): | 13.0 | |
DxO Maximum Effective ISO Score (iso): | 1,061 | |
Image Capture | ||
Image Resolution: |
5472 x 3648
(20.0 MP,
3:2), 4224 x 2816 (11.9 MP, 3:2), 3072 x 2048 (6.3 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), 12-bit RAW (.PEF, .DNG) | JPEG (8-bit), HEIF (10-bit), RAW (14-bit ARW 2.3), RAW+JPEG, RAW+HEIF |
Continuous-mode frames/second: | 5.4 | 10.0 |
Video Capture | ||
Can take movies: | Yes | Yes |
Movie Resolution: |
1920x1080 (30p/25p/24p)
1280x720 (60p/50p) |
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 | |
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) | Sony E |
Lens: | smc Pentax-DA L 18-55mm f/3.5-5.6 AL | Sony FE 28-70mm f/3.5-5.6 OSS SEL2870 |
Focal Length (35mm equivalent): | 27 - 83mm | 28 - 70mm |
Focal Length (actual): | 18 - 55mm | 28 - 70mm |
Zoom Ratio: | 3.06x | 2.50x |
Aperture Range: | f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele) | f/3.5-22 (W) / f/5.6-36 (T) |
Integrated ND Filter: | No | No |
Normal Focus Range: |
25 cm to Infinity 9.8 in to Infinity |
40 cm to Infinity 15.7 in to Infinity |
Macro Focus Range: | ||
Filter Thread: | 52.0mm | 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 IX i+, TTL phase-matching -11 point (9 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, 0.95x mag., 20.5mm eyepoint, -2.5 to +1.5 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): | 0.63x | |
Viewfinder Magnification (nominal/claimed): | 0.95x | |
Display | ||
Eye-level Viewfinder: | Yes | Yes |
Rear Display: | Yes | Yes |
Rear Display Size (inches): | 3.0 | 3.0 |
Rear Display Resolution: | 921,600 dots (307,200 px) | 3,680,000 dots |
Touchscreen: | No | Yes |
Articulating Screen: | No | Yes |
Tilt Swivel Screen: | No | Yes |
Selfie Screen: | No | Yes |
Max Playback Zoom: | 16.0x | 13.3x |
Top Deck Display: | No | No |
Exposure | ||
Maximum ISO (native): | 51200 | 51200 |
Minimum ISO (native): | 100 | 100 |
ISO Settings: | Auto, 100-51200 (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, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten Light, Flash, CTE, Manual, Color Temperature | 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: | 1/6000 - 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: 77 segment Multi, Center-weighted, Spot | 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: | Sensitivity Priority, Shutter & Aperture Priority (Tav); Scene: Portrait, Landscape, Macro, Moving Object, Night Scene Portrait, Sunset, Blue Sky, Forest, Night Scene, Night Scene HDR (JPEG only), Night Snap, Food, Pet, Kids, Surf & Snow, Backlight Silhouette, Candlelight, Stage Lighting, Museum; Effect: Faded Color, Clear Tone, Brilliant Color, Unicolor Bold, Vintage Color, Cross Processing, Warm Fade, Tone Expansion, Bold Monochrome, Infrared Filter, Vibrant Color Enhance; Digital filters (capture): Extract Color, Replace Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3 | 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: | No | No |
Flash | ||
Built-in Flash: | Yes | No |
Flash Modes: | Auto Flash Discharge, Auto Flash + Red-eye Reduction (Auto Picture, Scene) Flash On, Flash On+ Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, Manual Flash Discharge (Full-1/128) | Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync |
Flash Guide Number (ISO 100): | 10.0 m / 32.8 ft. | n/a |
Flash Range Description: | Depends on lens | n/a |
Max Flash Sync: | 1/180 | 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 | Enhanced Multi Interface Hot Shoe, Sync Terminal |
Built-In Wireless Flash Control: | No | |
Image Storage | ||
Usable Memory Types: | SD / SDHC / SDXC | MS PRO Duo / SD / SDHC / SDXC / CFexpress |
UHS Support: | UHS-I | UHS-I |
Other Memory: | UHS-I compliant | 2x:CFexpress Type A, SD UHS-II |
Dual Card Slots: | No | Yes |
RAW Capture Support: | Yes | Yes |
Uncompressed Format: | 12-bit RAW (.PEF, .DNG) | 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: | No | Yes |
NFC: | No | Yes |
Bluetooth: | No | Yes |
Built-In GPS: | No | No |
Microphone Jack: | No | Yes |
Headphone Jack: | No | Yes |
External Connections: | USB 2.0 High Speed | 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 IR | Yes, via USB or Wi-Fi |
Connections (extended): | Micro (Type D) HMDI | 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): | 5.4 | 10.0 |
Buffer size for JPEG shooting in burst mode (frames, max resolution): | 20 | 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): | 480 shots | |
Battery Life, Video: | ||
Battery Form Factor: | Proprietary D-LI109 | Proprietary |
Usable Battery Types: | Lithium-ion rechargeable | NP-FZ100 Lithium-ion rechargeable |
Batteries Included: | 1 x Proprietary D-LI109 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 | |
Internal Charging Supported: | Yes | |
Software | ||
Included Software: | Digital Camera Utility 5 Software CD-ROM | Capture One Express (for Sony) free download |
OS Compatibility: | Windows, Mac OS X | |
Miscellaneous | ||
Notes & Features: | The K-S1 comes in 3 standard colors: black, blue, and white. In addition, two separate color collections are available; The Fabric Collection, containing 4 unique colors such as cotton beige and tweed gray – and the Night Sky Collection, with 5 more elegant colors like Sunset Orange, Dawn Purple, and Midnight Black. |