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Sony Alpha 7 IV Compared to the Sony Alpha 7 III
| Specifications | Sony Alpha 7 IV | Sony Alpha 7 III |
|---|---|---|
 |
 | |
| Year Introduced | 2021 | 2018 |
| Megapixels | 33.0 | 24.2 |
| Total Pixels | 34.1 | 25.3 |
| Sensor Size | 35.9 x 23.9mm | 35.6 × 23.8mm |
| Pixel Dimensions | 7008 x 4672 | 6000 x 4000 |
| Pixel Size | 5.12µm | 5.93µm |
| Diffraction-Limited Aperture | f/8.2 | f/9.6 |
| Sensor Readout Speed (ms) | ||
| Sensor Stabilization | Y | Y |
| Lens Mount | Sony E-mount | Sony E-mount |
| FOVCF | 1.0x | 1.0x |
| Image Processor | BIONZ XR | BIONZ X |
| Autofocus | ||
| Type | Fast Hybrid AF(phase-detection AF/contrast-detection AF) | Fast Hybrid AF (phase-detection AF/contrast-detection AF) |
| Points | 35 mm full frame: 759 points (phase-detection AF), APS-C mode with FF lens: 713 points (phase-detection AF), with APS-C lens: 575 points (phase-detection AF) / 425 points (contrast-detection AF) | 35 mm full frame: 693 points (phase-detection AF), APS-C mode with full frame lens: 299 points (phase-detection AF), with APS-C lens: 221 points (phase-detection AF) / 425 points (contrast-detection AF) |
| Working Range | EV -4 – 20 (ISO100 equivalent with F2.0 lens attached) | EV -3 – 20 (ISO 100 equivalent with F2.0 lens attached) |
| Point Selection | Wide / Zone / Center Fix / Spot / Expand Spot / Tracking | Wide (693 points (phase-detection AF), 425 points (contrast-detection AF)) / Zone / Center / Flexible Spot (S/M/L) /Expanded Flexible Spot/ Lock-on AF (Wide / Zone / Center / Flexible Spot (S/M/L)/Expanded Flexible Spot), Eye AF |
| Microadjustment | Yes | |
| Touch & Drag AF | ||
| Eye Detection AF | Y | Y |
| Focus Bracketing/Stacking | ||
| Exposure Control | ||
| Metering Modes | 1200-zone evaluative metering | 1200-zone evaluative metering |
| Metering Range | EV -3 – 20 (at ISO100 equivalent with F2.0 lens attached) | EV -3 – 20 (at ISO100 equivalent with F2.0 lens attached) |
| Exposure Comp | +/- 5.0 EV (1/3 EV, 1/2 EV steps selectable) | +/- 5.0EV (1/3 EV, 1/2 EV steps selectable) (with exposure compensation dial: +/- 3EV (1/3 EV steps)) |
| AEB | Bracket: Cont., Bracket: Single, 3/5/9 frames selectable. (Ambient light, Flash light) | Bracket: Cont., Bracket: Single, 3/5/9 frames selectable. With 3 or 5 frames, in 1/3, 1/2, 2/3, 1.0, 2.0, or 3.0 EV increments, with 9 frames, in 1/3, 1/2, 2/3, or 1.0 EV increments |
| Light Flicker Mode | Y | |
| Intervalometer | ||
| ISO Sensitivity | Still images: ISO 100-51200 (ISO numbers from 50 to 204800 can be set as expanded ISO), AUTO (ISO 100-12800, selectable lower limit and upper limit), Movies: ISO 100-51200 equivalent (ISO numbers up to 102400 can be set as expanded ISO), AUTO (ISO 100-12800, selectable lower limit and upper limit) | Still images: ISO 100-51200 (ISO numbers from ISO 50 to ISO 204800 can be set as expanded ISO range.), AUTO (ISO 100-12800, selectable lower limit and upper limit), Movies: ISO 100-51200 equivalent (ISO numbers up to ISO 102400 can be set as expanded ISO range.), AUTO (ISO 100-12800, selectable lower limit and upper limit) |
| Shutter Speed | Still images: 1/8000 to 30 s, Bulb, Movies (NTSC mode): 1/8000 to 1/4 (1/3 steps), up to 1/60 in AUTO mode (up to 1/30 in Auto slow shutter mode), Movies (PAL mode): 1/8000 to 1/4 (1/3 steps), up to 1/50 in AUTO mode (up to 1/25 in Auto slow shutter mode) | Still images: 1/8000 to 30 s, Bulb, Movies: 1/8000 to 1/4 (1/3 steps), up to 1/60 in AUTO mode (up to 1/30 in Auto slow shutter mode) |
| Viewfinder | ||
| Type | 0.5" (1.3 cm) electronic , OLED, 3,686,400 dots | 0.5" (1.3 cm) electronic, XGA OLED, 2.36 million dots |
| Coverage | Approx. 100% | Approx. 100% |
| Magnification | Approx. 0.78x | Approx. 0.78x |
| Eyepoint | Approx. 23mm | Approx. 23mm |
| Information | Histogram, Real-time image-adjustment display, Digital level gauge, Grid line, Focus check, Peaking MF, Zebra, Movie marker, Emph disp dur REC | Graphic Display, Display All Info, No Disp. Info, Digital Level Gauge, Histogram, For viewfinder, Monitor Off |
| DOF Preview | Yes (via Setting Effect) | Yes (via Setting Effect) |
| LCD | ||
| Type | 2.95" (7.5cm) TFT, Vari-angle Touch Screen, approx 1,036,800 dots | 2.95" (7.5cm) TFT, Tilting, 921,600 dots, adjustable Up by approx. 107 degrees, Down by approx. 41 degrees |
| Coating | ||
| Brightness Adj | Manual (5 steps between -2 and +2), Sunny Weather mode | Manual (5 steps between -2 and +2), Sunny Weather mode |
| Display Options | Histogram, Real-time image-adjustment display, Digital level gauge, Grid line, Focus check, Peaking MF, Zebra, Movie marker, Emphasized display during REC | Graphic Display, Display All Info, No Disp. Info, Digital Level Gauge, Histogram, For viewfinder, Monitor Off |
| Flash | ||
| Built-in GN | N/A (ISO 100, meters) | N/A (ISO 100, meters) |
| Built-in Coverage | N/A | N/A |
| Built-in Recycle Time | N/A | N/A |
| Modes | Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction (on/off selectable), Wireless, Hi-speed sync. | Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction (on/off selectable), Wireless, Hi-speed sync. |
| X-Sync | 1/250 s (35 mm full frame), 1/320 s (APS-C) | 1/250 s |
| Exposure Compensation | +/- 3.0 EV (switchable between 1/3 and 1/2 EV steps) | +/- 3.0 EV (switchable between 1/3 and 1/2 EV steps) |
| Hot Shoe/PC Terminal | Yes / No | Yes / No |
| External Flash Comp | Sony α System Flash, Multi Interface Shoe | Sony α System Flash |
| Shooting | ||
| Shooting Modes | [Still images] Intelligent Auto (Auto) / Program Auto (P) / Aperture Priority (A) / Shutter Priority (S) / Manual Exposure (M), [Movie] Intelligent Auto (Auto) / Program Auto (P) / Aperture Priority (A) / Shutter Priority (S) / Manual Exposure (M) / Flexible Exp. Mode, [Slow & Quick Motion] Intelligent Auto (Auto) / Program Auto (P) / Aperture Priority (A) / Shutter Priority (S) / Manual Exposure (M) / Flexible Exp. Mode | AUTO (iAuto), Programmed AE (P), Aperture priority (A), Shutter-speed priority (S), Manual (M), Movie (Programmed AE (P) / Aperture priority (A) / Shutter-speed priority (S) / Manual (M) ), Slow & Quick Motion (Programmed AE (P) / Aperture priority (A) / Shutter-speed priority (S) / Manual (M) ), Scene Selection |
| Picture Styles | Yes (Off / PP1-PP11) Parameters: Black level, Gamma (Movie, Still, S-Cinetone, Cine1-4, ITU709, ITU709 [800%], S-Log2, S-Log3, HLG, HLG1-3), Black Gamma, Knee, Color Mode, Saturation, Color Phase, Color Depth, Detail, Copy, Reset | Standard, Vivid, Neutral, Clear, Deep, Light, Portrait, Landscape, Sunset, Night Scene, Autumn leaves, Black & White, Sepia, Style Box (1-6), (Contrast (-3 to +3 steps), Saturation (-3 to +3 steps), Sharpness (-3 to +3 steps)) |
| Image Processing | Peripheral Shading, Chromatic Aberration, Distortion | Peripheral Shading, Chromatic Aberration, Distortion, Long exposure NR: On/Off, available at shutter speeds longer than 1 sec., High ISO NR: Normal/Low/Off |
| Abberration Corrections | ||
| Drive Modes | Single Shooting, Continuous shooting (Hi+/Hi/Mid/Lo selectable), Self-timer, Self-timer (Cont.), Bracket: Single,Bracket: Cont., White Balance bracket, DRO bracket | Single Shooting, Continuous shooting (Hi+/Hi/Mid/Lo selectable), Self-timer, Self-timer (Cont.), Bracket: Single, Bracket: Cont., White Balance bracket, DRO bracket |
| Continuous Shooting | Hi+: 10 fps, Hi: 8 fps, Mid: 6 fps, Lo: 3 fps | Max Approx. 10 fps (speed maintained 40 RAW (Uncompressed) / 163 JPEG (Extra Fine)) |
| Shutter Lag | 20ms | 20ms |
| Viewfinder Blackout | ||
| Live View | ||
| FrameRate | STD 60 fps / HI 120 fps | |
| Focusing | AF-S (Single-shot AF), AF-C ( Continuous AF), DMF (Direct Manual Focus), Manual Focus | AF-A (Automatic AF), AF-S (Single-shot AF), AF-C (Continuous AF), DMF (Direct Manual Focus), Manual Focus |
| Metering | Multi-segment, Center-weighted, Spot (Standard / Large), Entire Screen Avg., Highlight | Multi-segment, Center-weighted, Spot, Spot Standard/Large, Entire Screen Avg., Highlight |
| Display Options | Histogram, Real-time image-adjustment display, Digital level gauge, Grid line, Focus check, Peaking MF, Zebra, Movie marker, Emphasized display during REC | Graphic Display, Display All Info., No Disp. Info., Digital Level Gauge, Histogram, For viewfinder, Monitor Off |
| File Information | ||
| Still ImageType | JPEG (DCF Ver. 2.0, Exif Ver. 2.32, MPF Baseline compliant), HEIF (MPEG-A MIAF compliant), RAW (Sony ARW 4.0 format compliant) | JPEG (DCF Ver. 2.0, Exif Ver.2.31, MPF Baseline compliant), RAW (Sony ARW 2.3 format) |
| Image Size | Image Size (pixels) [3:2] 35 mm full frame L : 7008 x 4672 (33 M), M : 4608 x 3072 (15 M), S : 3504 x 2336 (8.2 M), APS-C M : 4608 x 3072 (15 M), S : 3504 x 2336 (8.2 M) Image size (pixels) [4:3] 35 mm full frame L : 6224 x 4672 (29 M), M : 4096 x 3072 (13 M), S : 3120 x 2336 (7.3 M), APS-C M : 4096 x 3072 (13 M), S : 3120 x 2336 (7.3 M) Image Size (pixels) [16:9] 35 mm full frame L : 7008 x 3944 (28 M), M : 4608 x 2592 (12 M), S : 3504 x 1968 (6.9 M), APS-C M : 4608 x 2592 (12 M), S : 3504 x 1968 (6.9 M) Image size (pixels) [1:1] 35 mm full frame L : 4672 x 4672 (22 M), M : 3072 x 3072 (9.4 M), S : 2336 x 2336 (5.5 M), APS-C M : 3072 x 3072 (9.4 M), S : 2336 x 2336 (5.5 M) | 3:2 Ratio: L: 6000 x 4000 (24M), M: 3936 x 2624 (10M), S: 3008 x 2000 (6.0M), APS-C L: 3936 x 2624 (10M), M: 3008 x 2000 (6.0M), S: 1968 x 1312 (2.6M) 16:9 Ratio: L: 6000 x 3376 (20 M), M: 3936 x 2216 (8.7M), S: 3008 x 1688 (5.1M), APS-C L: 3936 x 2216 (8.7M), M: 3008 x 1688 (5.1M), S: 1968 x 1112 (2.2M) |
| Movie Type | XAVC S, XAVC HS | XAVC S: MPEG-4 AVC/H.264, AVCHD: MPEG-4 AVC/H.264 |
| Movie Size | MOVIE RECORDING SYSTEM (XAVC HS 4K) 3840 x 2160 (4:2:0, 10bit, NTSC) (Approx.): 60p (150 Mbps / 75 Mbps / 45 Mbps)5 6, 24p (100 Mbps / 50 Mbps / 30 Mbps)6, 3840 x 2160 (4:2:0, 10bit, PAL) (Approx.): 50p (150 Mbps / 75 Mbps / 45 Mbps)5, 3840 x 2160 (4:2:2, 10bit, NTSC) (Approx.): 60p (200 Mbps / 100 Mbps)56, 24p (100 Mbps / 50 Mbps)6, 3840 x 2160 (4:2:2, 10bit, PAL) (Approx.): 50p (200 Mbps / 100 Mbps)5 MOVIE RECORDING SYSTEM (XAVC S-I 4K) 3840 x 2160 (4:2:2, 10bit, NTSC) (Approx.): 60p (600 Mbps)56, 30p (300 Mbps)6, 24p (240 Mbps)3840 x 2160 (4:2:2, 10bit, NTSC) (Approx.): 60p (600 Mbps)56, 30p (300 Mbps)6, 24p (240 Mbps)6, 3840 x 2160 (4:2:2, 10bit, PAL) (Approx.): 50p (500 Mbps)5, 25p (250 Mbps) 6, 3840 x 2160 (4:2:2, 10bit, PAL) (Approx.): 50p (500 Mbps)5, 25p (250 Mbps) MOVIE RECORDING SYSTEM (XAVC S-I HD) 1920 x 1080 (4:2:2, 10bit, NTSC) (Approx.): 60p (222 Mbps)6, 30p (111 Mbps)6, 24p (89 Mbps)6, 1920 x 1080 (4:2:2, 10bit, PAL) (Approx.): 50p (185 Mbps), 25p (93 Mbps) | XAVC S 4K (NTSC): 3840 x 2160 (30p/100 M, 24p/100 M, 30p/60 M, 24p/60 M), XAVC S HD: 1920 x 1080 (120p/100M, 120p/60M, 60p/50M, 30p/50M, 24p/50M, 60p/25M, 30p/16M), AVCHD: 1920 x 1080 (60i, 24M, FX, 60i, 17M, FH) XAVC S 4K (PAL): 3840 x 2160 (25p/100M, 25p/60M), XAVC S HD:1920 x 1080 (100p/100M, 100p/60M, 50p/50M, 25p/50M), AVCHD:1920 x 1080 (50i, 24M, FX, 50i, 17M, FH) |
| Movie Length | Max duration approx. 29min | |
| Other Information | ||
| Wireless Features | Wi-Fi (2.4 and 5 GHz, IEEE 802.11a/b/g/n/ac), Bluetooth 4.1 | Built-in Wi-Fi, Bluetooth and NFC |
| GPS | Can be synchronized with connected mobile device | |
| Custom Functions | ||
| LCD Panel / Illumination | No / No | No / No |
| Water & Dust Resistance | Yes | Yes |
| Sound Memo | No | No |
| Interface | ||
| Computer Interface | USB Type-C SuperSpeed USB (USB 3.2 Gen 2) compatible | Super Speed USB (Micro USB connector) |
| Other Interface | HDMI Type-A (full size), External Microphone In / Line In (Stereo mini jack), Headphone socket (Stereo mini jack), multi-terminal USB (Micro) | HDMI micro connector (Type-D) out, External Microphone In / Line In (Stereo mini jack), Headphone socket (Stereo mini jack) |
| Memory | ||
| Memory Type | Dual SD, SDHC, SDXC (UHS-I/II) Slots, Multi Slot 1 accepts CFexpress Type A | Memory Stick PRO Duo/PRO HG-Duo/Micro M2, SD/SDHC/SDXC (UHS-I/II) |
| Batteries & Power | ||
| Battery | Rechargeable Battery Pack NP-FZ100 | Rechargeable NP-FZ100 |
| Battery Life | Approx. (Still Images) Approx. 520 shots (Viewfinder) / approx. 580 shots (LCD monitor) (CIPA standard) Battery Life (Movie, actual recording) Approx. 100 min (Viewfinder) / Approx. 110 min (LCD monitor) (CIPA standard) (Movie, continuous recording) Approx. 170 min (Viewfinder) / Approx. 175 min (LCD monitor) (CIPA standard) | Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) |
| Power Supply Battery Chargers | AC-UUD12 AC Adapter, BC-QZ1 Battery Charger | |
| Physical Specs | ||
| Body Materials | Magnesium Alloy body covers | Magnesium Alloy body covers |
| Shutter Durability Rating | 500,000 | 500,000 |
| Operating Environment | 32–104°F / 0–40°C | 32–104°F / 0–40°C |
| Dimensions Inches | 5.17 x 3.80 x 3.14" (131.3 x 96.4 x 79.8 mm) | 5.0 x 3.9 x 3.0" (126.9 x 95.6 x 73.7mm) |
| CIPA Weight | 23.2 oz (658g) | 23 oz (650g) |
| Accessories | ||
| Viewfinder | ||
| Wireless File Transmitter | Built-in | Built-in |
| Compatible Lenses | Sony E-mount | Sony E-Mount |
| Battery Grip | VG-C4EM Buy ► | VG-C3EM Buy ► |
| Remote | Sony Remote Control with Multi-terminal cable, Compatible infrared remote | |
| Other | ||
| Review | Sony Alpha 7 IV | Sony Alpha 7 III |
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