Sony α7 IV
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| Overview | |
|---|---|
| Maker | Sony |
| Released | October 21, 2021 |
| Intro price | $2,499 USD body, $2,699 USD kit (28-70mm Zoom Lens) |
| Lens | |
| Lens mount | Sony E-mount |
| Lens | Interchangeable |
| Compatible lenses | Full-Frame and APS-C E-mount lenses |
| Sensor/medium | |
| Sensor type | BSI-CMOS |
| Sensor size | 35.9 × 23.9 mm (Full frame type) |
| Sensor maker | Sony Semiconductor Solutions Corporation |
| Maximum resolution | 7008 × 4672 (33 megapixels) |
| Recording medium | SD, SDHC, SDXC, CF Express Type A memory card |
| Flash | |
| Flash | No |
| Flash synchronization | 1/250 second (Full-frame), 1/320 second (APS-C size) |
| Flash bracketing | Sony Mi-Shoe Mount |
| Shutter | |
| Shutter | Mechanical, Electronic |
| Shutter speeds | 1/8000 s to 30 s, BULB |
| Continuous shooting | 10 frames per second |
| Viewfinder | |
| Viewfinder | Yes, 1.3 cm (0.5 type) Electronic Viewfinder |
| Viewfinder magnification | Approx. 0.78× with 50 mm lens at infinity |
| Frame coverage | 100% |
| Image processing | |
| Image processor | BIONZ XR |
| General | |
| LCD screen | 76 mm (3 in) with 1.03M dots |
| Battery | NP-FZ100 Lithium-Ion rechargeable battery |
| AV Port(s) | HDMI Type A (Full-size) |
| Data Port(s) | USB 2.0 Micro-B, SuperSpeed 10 Gbps USB 3.2 Type-C, 5GHz/2.4.GHz Wi-Fi, Bluetooth 4.2 |
| Dimensions | 131.3 by 96.4 by 79.8 mm (5.17 by 3.80 by 3.14 in) |
| Weight | 658g |
| Made in | Thailand and China |
| Chronology | |
| Predecessor | Sony α7 III |
| Successor | Present model |
The Sony α7 IV (model ILCE-7M4) is a full-frame mirrorless interchangeable-lens camera manufactured by Sony. It was announced[1] on 21 October 2021 as the successor to the Sony α7 III. Featuring a new 34.1MP (approx. total)[2] back-illuminated CMOS sensor inside, latest BIONZ XR™ image processor, Real-Time Eye AF tracking and 4K 60p video with Super 35mm mode[3]
Features
[edit]The camera features several advancements from its predecessor the Sony α7 III, also incorporating some pro features from the high-end Sony α1.
- 33 MP (approx. effective)[2] full-frame BSI-CMOS sensor
- 759 Phase Detection AF Points and 425 Contrast Detection AF points[4]
- Featuring Real-time Continuous Eye-AF Tracking for Human, Animal & Bird
- Improved UI Layout[5] (New menu structure) compared to its predecessor
- Closed mechanical shutter function (previously this feature debuted in α1) when the camera is turned off[6]
- Flip[4] 3-inch LCD vari-angle touchscreen with 1.04 million dots[5]
- 3.69-million-dot resolution, 120 fps refresh rate EVF[5]
- 5-axis optical in-body image stabilisation with a 5.5 stops of shake reduction[7]
- 10 fps continuous shooting (mechanical or silent)[8]
- Live stream through the USB Type-C connector in 4K(15 fps) and FHD(60 fps)
- 4K 60p recording in Super 35mm mode and up to 4K 30p recording with 7K oversampling is available in full-frame mode
- 15-stop dynamic range[9]
- Slow & Quick motion features up to 120 fps
- 4K oversampled video from 7K resolution in 30p video mode[10]
- Battery life with NP-FZ100 is rated at approx. 580 images using LCD screen and approx. 520 images using EVF[9]
- Native ISO range is 100-51,200 and extended ISO range is 50-204,800[8][11]
- 10-bit HEIF[12] image option (using .heic container)
- Continuous burst shoot 10 fps with Compressed Raw and 6 fps with Uncompressed Raw[6]
- Weather sealed, magnesium alloy body
- No built-in flash[13]
- Multi Interface (Mi Shoe) shoe with Sony's unique metal shoe
- 3.68 million-dot (approx.) OLED Quad-VGA viewfinder is (1.6 times the resolution of the Alpha 7 III viewfinder)[1]
- Supports 4 different video file formats (XAVC HS 4K, XAVC S-I 4K, XAVC S 4K, XAVC S HD)[14]
- Dual SD Card Slots,[15][16] CFExpress Type A Slot (only SLOT 1)
 1 2 | |||||||
Dual memory card slots of the right side of the Sony α7 IV, the camera supports the operation while both card slots are occupied, both card slots supports UHS-I and UHS-II class SD cards
| |||||||
Dynamic range and color independent testing
[edit]Independent testing by Gerald Undone using Imatest software and a Xyla color range chart demonstrates a dynamic range of 12.8 stops of light, which is approximately 1/3 of a stop better than the Sony A7s iii and approximately the same as the Sony a1.[17] It color matches fairly well with the Sony A7s iii and Sony a1, with the Sony A7s iii leaning a bit green, the Sony a1 a bit magenta, and this camera between the two (tested using DCS Labs -SW - CDM 28R - v15.2 A3 color chart) and with individual white balancing, the colors are very similar.[17]
Video formats
[edit]Camera is using in house developed AVC Video Format called XAVC. The format is compressed format, achieving balanced quality and file size. Recording in color depth of 10 bits and 4:2:2 chroma subsampling is possible with Sony's XAVC codec.
- All Intra-frame system that compresses each frame individually to achieve best quality.
- When recording 4K movies in the XAVC HS format is an optional which is using a HEVC codec (H.265) and has high compression efficiency.
- The camera can record movies with higher image quality than XAVC S movies but the same data volume.
- Camera can record in "Long GOP" codec (H.264) compression, which is compressing multiple frames to reduce file size.
Video resolutions and modes
[edit]PAL modes and NTSC modes have different recording frame rates and record settings.[14][15][16][18]
| File formats | Recording frame rate | Record setting | APS-C S35 mode
(Forced / available) |
|---|---|---|---|
| XAVC HS 4K | 50p | 200M 4:2:2 10-bit
150M 4:2:0 10-bit 100M 4:2:2 10-bit 75M 4:2:0 10-bit 45M 4:2:0 10-bit |
Forced |
| XAVC S 4K | 50p | 200M 4:2:2 10-bit
150M 4:2:0 8-bit |
Forced |
| 25p | 140M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| XAVC S HD | 50p | 50M 4:2:2 10-bit
50M 4:2:0 8-bit 25M 4:2:0 8-bit |
Available |
| 25p | 50M 4:2:2 10-bit
50M 4:2:0 8-bit 16M 4:2:0 8-bit |
Available | |
| 100p | 100M 4:2:0 8-bit
60M 4:2:0 8-bit |
Available | |
| XAVC S-I 4K | 50p | 500M 4:2:2 10-bit | Forced |
| 25p | 250M 4:2:2 10-bit | Available | |
| XAVC S-I HD | 50p | 185M 4:2:2 10-bit | Available |
| 25p | 93M 4:2:2 10-bit | Available |
| File formats | Recoding frame rate | Record setting | APS-C S35 Mode
(Forced / available) |
|---|---|---|---|
| XAVC HS 4K | 60p | 200M 4:2:2 10-bit
150M 4:2:0 10-bit 100M 4:2:2 10-bit 75M 4:2:0 10-bit 45M 4:2:0 10-bit |
Forced |
| 24p | 100M 4:2:2 10-bit
100M 4:2:0 10-bit 50M 4:2:2 10-bit 50M 4:2:0 10-bit 30M 4:2:0 10-bit |
Available | |
| XAVC S 4K | 60p | 200M 4:2:2 10-bit
150M 4:2:0 8-bit |
Forced |
| 30p | 140M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| 24p | 100M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| XAVC S HD | 60p | 50M 4:2:2 10-bit
50M 4:2:0 8-bit 25M 4:2:0 8-bit |
Available |
| 30p | 50M 4:2:2 10-bit
50M 4:2:0 8-bit 16M 4:2:0 8-bit |
Available | |
| 24p | 50M 4:2:2 10-bit
50M 4:2:0 8-bit |
Available | |
| 100p | 100M 4:2:0 8-bit
60M 4:2:0 8-bit |
Available | |
| XAVC S-I 4K | 60p | 600M 4:2:2 10-bit | Forced |
| 30p | 300M 4:2:2 10-bit | Available | |
| 24p | 240M 4:2:2 10-bit | Available | |
| XAVC S-I HD | 60p | 222M 4:2:2 10-bit | Available |
| 30p | 111M 4:2:2 10-bit | Available | |
| 24p | 89M 4:2:2 10-bit | Available |
Available Slow and Quick motion shooting modes in PAL and NTSC Mode:
| File formats | Recoding frame rate | Final clip frame rate | Record setting
(XAVC S) |
APS-C S35 Mode
(Forced / available) |
|---|---|---|---|---|
| Slow and Quick
Motion |
50p | 50 fps
25 fps (2x Quick motion) 12 fps (4.16x Quick motion) 6 fps (8.33x Quick motion) 3 fps (16.66x Quick motion) 2 fps (25x Quick motion) 1 fps (50x Quick motion) |
200M 4:2:2 10-bit
150M 4:2:0 8-bit |
Forced |
| 25p | 50 fps (2x Slow motion)
25 fps 12 fps (2.08x Quick motion) 6 fps (4.16x Quick motion) 3 fps (8.33x Quick motion) 2 fps (12.5x Quick motion) 1 fps (25x Quick motion) |
140M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| 100p | 100 fps
50 fps (2x Quick motion) 25 fps (4x Quick motion) 12 fps (8.33x Quick motion) 6 fps (16.66x Quick motion) 3 fps (33.33x Quick motion) 2 fps (50x Quick motion) 1 fps (100x Quick motion) |
100M 4:2:0 8-bit
60M 4:2:0 8-bit |
Available |
| File formats | Recoding frame rate | Final clip frame rate | Record setting
(XAVC S) |
APS-C S35 Mode
(Forced / available) |
|---|---|---|---|---|
| Slow and Quck
Motion |
60p | 60 fps
30 fps (2x Quick motion) 15 fps (4x Quick motion) 8 fps (7.5x Quick motion) 4 fps (15x Quick motion) 2 fps (30x Quick motion) 1 fps (60x Quick motion) |
200M 4:2:2 10-bit
150M 4:2:0 8-bit |
Forced |
| 30p | 60 fps (2x Slow motion)
30 fps 15 fps (2x Quick motion) 8 fps (3.75x Quick motion) 4 fps (7.5x Quick motion) 2 fps (15x Quick motion) 1 fps (30x Quick motion) |
140M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| 24p | 60 fps (2.5x Slow motion)
30 fps (1.25x Slow motion) 15 fps (1.6x Quick motion) 8 fps (3x Quick motion) 4 fps (6x Quick motion) 2 fps (12x Quick motion) 1 fps (24x Quick motion) |
140M 4:2:2 10-bit
100M 4:2:0 8-bit 60M 4:2:0 8-bit |
Available | |
| 120p (XAVC S HD Only) | 120 fps
60 fps (2x Slow motion) 30 fps (4x Quick motion) 15 fps (8x Quick motion) 8 fps (15x Quick motion) 4 fps (30x Quick motion) 2 fps (60x Quick motion) 1 fps (120x Quick motion) |
100M 4:2:0 8-bit
60M 4:2:0 8-bit |
Available |
See also
[edit]References
[edit]- ^ a b "Sony Electronics' Alpha 7 IV Goes Beyond 'Basic' with 33-Megapixel Full-frame Image Sensor and Outstanding Photo and Video Operability". www.sony.com. Retrieved 28 September 2022.
- ^ a b "Sony Alpha 7 IV - Full-frame Interchangeable Lens Camera 33MP, 10FPS, 4K/60p | ILCE-7M4". Sony Electronics. Retrieved 28 September 2022.
- ^ updated, Mark Wilson last (21 October 2021). "The Sony A7 IV is a late contender for mirrorless camera of the year". TechRadar. Retrieved 30 September 2022.
- ^ a b Bergreen, Marc (13 May 2022). "Sony a7IV Review: Is It Worth The Upgrade?". Shotkit. Retrieved 30 September 2022.
- ^ a b c updated, Mark Wilson last (3 February 2022). "Sony A7 IV review". TechRadar. Retrieved 30 September 2022.
- ^ a b "Sony a7IV review: a solid all-arounder for every shooter". Popular Photography. 27 April 2022. Retrieved 30 September 2022.
- ^ "Sony's A7 IV camera arrives with a 33-megapixel sensor and 4K 60p video". Engadget. Retrieved 30 September 2022.
- ^ a b Sony a7 IV Review: The Best Hybrid Camera for the Money!, retrieved 30 September 2022
- ^ a b "The Autofocus on Sony's A7 IV Makes This Camera Shine". WIRED. Retrieved 30 September 2022.
- ^ Nando Harmsen (25 January 2022). "Our In-Depth Review of the Sony a7 IV". Fstoppers. Retrieved 30 September 2022.
- ^ Sony A7 IV Review // Good but Not What You Were Expecting???, retrieved 30 September 2022
- ^ "Sony A7 IV Review". Imaging Resource. Retrieved 30 September 2022.
- ^ "Sony a7 IV Review". PCMAG. Retrieved 30 September 2022.
- ^ a b "Sony a7 IV review". DPReview. Retrieved 30 September 2022.
- ^ a b "ILCE-7M4 | Help Guide | Sides". helpguide.sony.net. Retrieved 30 September 2022.
- ^ a b "ILCE-7M4 | Help Guide | Specifications". helpguide.sony.net. Retrieved 30 September 2022.
- ^ a b Sony a7 IV Review: The Best Hybrid Camera for the Money!, retrieved 22 October 2022
- ^ Sony a7 IV First Impressions Review, retrieved 30 September 2022
- ^ "Sony a7 IV: Digital Photography Review". www.dpreview.com. Retrieved 30 September 2022.
External links
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