Sony A7R III vs Sony a1
Portability
63 Imaging
78 Features
93 Overall
84
63 Imaging
78 Features
93 Overall
84
Portability
61 Imaging
81 Features
93 Overall
85
61 Imaging
81 Features
93 Overall
85
Sony A7R III vs Sony a1 Key Specs
Sony A7R III
(Full Review)
(Full Review)
- 42MP - Full frame Sensor
- 3" Tilting Screen
- ISO 100 - 32000 (Push to 102400)
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Maximum Shutter
- 3840 x 2160 video
- Sony E Mount
- 657g - 127 x 96 x 74mm
- Announced October 2017
- Old Model is Sony A7R II
- New Model is Sony A7R IV
Sony a1
(Full Review)
(Full Review)
- 50MP - Full frame Sensor
- 3" Tilting Screen
- ISO 100 - 32000 (Boost to 102400)
- Sensor based 5-axis Image Stabilization
- 1/8000s Maximum Shutter
- 7680 x 4320 video
- Sony E Mount
- 737g - 129 x 97 x 70mm
- Released January 2021
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In this article, we will be comparing the Sony A7R III and Sony a1, both Pro Mirrorless cameras and they are both offered by Sony. The resolution of the A7R III (42MP) and the a1 (50MP) is relatively comparable and they enjoy the same exact sensor dimensions (Full frame).
Photography GlossaryThe A7R III was manufactured 4 years earlier than the a1 and that is a fairly serious difference as far as camera technology is concerned. Both cameras offer the identical body type (SLR-style mirrorless).
Before getting in to a complete comparison, below is a concise summation of how the A7R III matches up vs the a1 for portability, imaging, features and an overall grade.
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Here is a preview of the gallery photos for Sony Alpha A7R III & Sony Alpha a1. The entire galleries are provided at Sony A7R III Gallery & Sony a1 Gallery.
Reasons to pick Sony A7R III over the Sony a1
| A7R III | a1 |
|---|
Reasons to pick Sony a1 over the Sony A7R III
| a1 | A7R III | |||
|---|---|---|---|---|
| Released | January 2021 |  | October 2017 | More recent by 39 months |
Common features in the Sony A7R III and Sony a1
| A7R III | a1 | |||
|---|---|---|---|---|
| Focus manually |  | Dial accurate focusing | ||
| Screen type | Tilting |  | Tilting | Tilting screen |
| Screen sizing | 3" |  | 3" | Equivalent screen sizing |
| Screen resolution | 1440k |  | 1440k | Identical screen resolution |
| Selfie screen |  | Lacking selfie screen | ||
| Touch screen |  | Quickly navigate |
Sony A7R III vs Sony a1 Physical Comparison
For those who are planning to lug around your camera regularly, you are going to need to consider its weight and volume. The Sony A7R III has got outer dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs) whilst the Sony a1 has sizing of 129mm x 97mm x 70mm (5.1" x 3.8" x 2.8") and a weight of 737 grams (1.62 lbs).
Look at the Sony A7R III and Sony a1 in our brand new Camera plus Lens Size Comparison Tool.
Take into account, the weight of an ILC will vary based on the lens you have at that moment. Following is the front view size comparison of the A7R III versus the a1.
Using dimensions and weight, the portability grade of the A7R III and a1 is 63 and 61 respectively.
Sony A7R III vs Sony a1 Sensor Comparison
Normally, it's tough to picture the difference in sensor measurements only by seeing specifications. The visual underneath might offer you a greater sense of the sensor dimensions in the A7R III and a1.
Plainly, the two cameras enjoy the same exact sensor sizing albeit different resolution. You can count on the Sony a1 to show extra detail due to its extra 8MP. Higher resolution will also let you crop pictures far more aggressively. The older A7R III will be behind with regard to sensor innovation.
Sony A7R III vs Sony a1 Screen and ViewFinder
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Portrait Comparison
Sony A7R III as a Portrait photography camera
Sony a1 as a Portrait photography camera
you can focus manually
megapixel count great (42MP)
sensor size is big (Full frame)
features face detect autofocus
supports RAW formats
has manual focus
flash sync is higher than normal (1/400s)
sensor resolution is great (50 megapixels)
big sensor size (Full frame)
offers face detection autofocus
saves RAW files
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Sony A7R III Street photography info
Sony a1 Street photography info
tilting screen
built in image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
supports RAW formats
offers focus by touch
environment proof
great ISO range (32,000)
screen tilts
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
saves RAW files
has focus via touch
weather sealing
great high ISO (32,000)
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Sony A7R III Sports photography highlights
Sony a1 Sports photography highlights
high shutter speed (1/8,000s)
built in image stabilization (Sensor based 5-axis)
megapixel count great (42 megapixels)
sensor size is big (Full frame)
features tracking focus
environment proof
better than average battery pack (650 per charge)
sensor has phase detect autofocus
max shutter speed is good (1/8,000 seconds)
silent shutter (1/32,000 seconds)
fast continuous shooting (30.0 frames/s)
built in image stabilization (Sensor based 5-axis)
sensor resolution is great (50MP)
big sensor size (Full frame)
offers tracking autofocus
weather sealing
great battery (530 per charge)
has phase detect autofocus
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Sony A7R III Travel photography details
Sony a1 Travel photography details
better than average battery pack (650 shots)
environment proof
connects via bluetooth
offers focus by touch
megapixel count great (42 megapixels)
does not offer selfie friendly screen
great battery (530 per charge)
weather sealing
has bluetooth
has focus via touch
sensor resolution is great (50MP)
doesn't offer selfie friendly screen
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Sony A7R III Landscape photography factors
Sony a1 Landscape photography factors
you can focus manually
change lenses (Sony E mount)
screen is a decent size (3 inch)
built in image stabilization (Sensor based 5-axis)
megapixel count great (42MP)
sensor size is big (Full frame)
does not have anti-alias filter
great ISO range (32,000)
supports RAW formats
environment proof
better than average battery pack (650 CIPA)
2 card slots
has manual focus
change lenses (Sony E mount)
decent sized screen (3")
built in image stabilization (Sensor based 5-axis)
sensor resolution is great (50 megapixels)
big sensor size (Full frame)
great high ISO (32,000)
saves RAW files
weather sealing
great battery (530 CIPA)
2 card slots
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Vlogging with Sony A7R III
Vlogging with Sony a1
built-in touchscreen
built in image stabilization (Sensor based 5-axis)
features face detect autofocus
good video quality (3840 x 2160 resolution)
includes mic support
does not offer selfie friendly screen
touchscreen capability
built in image stabilization (Sensor based 5-axis)
offers face detection autofocus
high res video (7680 x 4320 pixels)
has external mic support
doesn't offer selfie friendly screen
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Sony A7R III vs Sony a1 Specifications
| Sony Alpha A7R III | Sony Alpha a1 | |
|---|---|---|
| General Information | ||
| Manufacturer | Sony | Sony |
| Model | Sony Alpha A7R III | Sony Alpha a1 |
| Type | Pro Mirrorless | Pro Mirrorless |
| Announced | 2017-10-25 | 2021-01-26 |
| Physical type | SLR-style mirrorless | SLR-style mirrorless |
| Sensor Information | ||
| Powered by | Bionz X | - |
| Sensor type | BSI-CMOS | BSI-CMOS |
| Sensor size | Full frame | Full frame |
| Sensor dimensions | 35.9 x 24mm | 35.9 x 24mm |
| Sensor surface area | 861.6mm² | 861.6mm² |
| Sensor resolution | 42MP | 50MP |
| Anti aliasing filter | ||
| Aspect ratio | 3:2 and 16:9 | 1:1, 4:3, 3:2 and 16:9 |
| Maximum resolution | 7952 x 5304 | 8640 x 5760 |
| Maximum native ISO | 32000 | 32000 |
| Maximum boosted ISO | 102400 | 102400 |
| Minimum native ISO | 100 | 100 |
| RAW images | ||
| Minimum boosted ISO | 50 | 50 |
| Autofocusing | ||
| Focus manually | ||
| Touch focus | ||
| Autofocus continuous | ||
| Autofocus single | ||
| Autofocus tracking | ||
| Selective autofocus | ||
| Center weighted autofocus | ||
| Multi area autofocus | ||
| Autofocus live view | ||
| Face detection focus | ||
| Contract detection focus | ||
| Phase detection focus | ||
| Number of focus points | 425 | 759 |
| Lens | ||
| Lens mounting type | Sony E | Sony E |
| Number of lenses | 121 | 133 |
| Crop factor | 1 | 1 |
| Screen | ||
| Type of screen | Tilting | Tilting |
| Screen diagonal | 3 inches | 3 inches |
| Screen resolution | 1,440k dots | 1,440k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Viewfinder Information | ||
| Viewfinder | Electronic | Electronic |
| Viewfinder resolution | 3,686k dots | 9,437k dots |
| Viewfinder coverage | 100 percent | 100 percent |
| Viewfinder magnification | 0.78x | 0.9x |
| Features | ||
| Slowest shutter speed | 30 seconds | 30 seconds |
| Maximum shutter speed | 1/8000 seconds | 1/8000 seconds |
| Maximum silent shutter speed | - | 1/32000 seconds |
| Continuous shooting rate | 10.0 frames/s | 30.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Change white balance | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash range | no built-in flash | no built-in flash |
| Flash options | Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync | Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync |
| Hot shoe | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Maximum flash synchronize | - | 1/400 seconds |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) | 7680x4320 (30p, 25p, 23.98) |
| Maximum video resolution | 3840x2160 | 7680x4320 |
| Video data format | MPEG-4, AVCHD, XAVC S | XAVC S, XAVC HS, H.264, H.265 |
| Mic support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | Built-In | Built-In |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1(5 GBit/sec) | Yes |
| GPS | None | None |
| Physical | ||
| Environment sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 657 gr (1.45 lb) | 737 gr (1.62 lb) |
| Dimensions | 127 x 96 x 74mm (5.0" x 3.8" x 2.9") | 129 x 97 x 70mm (5.1" x 3.8" x 2.8") |
| DXO scores | ||
| DXO All around score | 100 | not tested |
| DXO Color Depth score | 26.0 | not tested |
| DXO Dynamic range score | 14.7 | not tested |
| DXO Low light score | 3523 | not tested |
| Other | ||
| Battery life | 650 pictures | 530 pictures |
| Battery style | Battery Pack | Battery Pack |
| Battery model | NP-FZ100 | NP-FZ100 |
| Self timer | Yes (2 or 10 sec; continuous (3 or 5 exposures)) | Yes |
| Time lapse shooting | ||
| Type of storage | Two SD/SDHC/SDXC slots (UHS-II support on one) | Dual SD/CFexpress Type A slots (UHS-II supported) |
| Card slots | Dual | Dual |
| Cost at launch | $2,800 | $6,498 |