Sony a1
Sony · Mirrorless · 50.1 MP · Full Frame · 8K video

Score Breakdown
Scores combine our editorial testing with published lab data.
Independent Lab Scores
General | |
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About This CameraThe Sony a1 is a full-frame mirrorless camera released in 2021. It pairs a 50.1 megapixel sensor with a 30 fps burst rate, a combination built for photographers who want resolution and speed in one body. Those numbers suit wildlife, sports and event shooters who crop hard and work in quick bursts. The 8K video recording also makes it a plausible single body for mixed photo and video work. It uses the Sony FE mount, so it sits within Sony's full-frame mirrorless lens system. At 737 g, it is a camera you will notice carrying on long days. | |
| Brand | Sony |
| Model | a1 |
Released ⓘRefers to the year this camera was officially made available for sale. | 2021 |
Announcement date ⓘRefers to the date the manufacturer publicly announced the upcoming release and general specs of this camera. | January 26, 2021 |
| Camera type | |
| Camera size | 129 x 97 x 81 mm |
| Camera weight | 737 g |
Optics89/100 | |
About the OpticsThe 50.1 megapixel full-frame sensor is the heart of this camera. That resolution leaves room for aggressive cropping. The Dual Bionz XR processor handles image processing. Our optics score of 89 is exceptional, and the a1 sits in the top 1% of cameras in our database for Optics. Speed is the other half of the story. The burst rate reaches up to 30 fps, a maximum figure rather than a sustained promise. The 1/32000 sec maximum shutter speed helps when you want wide apertures in bright light, and 759 autofocus points are available for the focusing system to draw on. In-body stabilisation reduces camera shake, which helps handheld work at slower shutter speeds, though it cannot freeze a moving subject. The electronic viewfinder, with roughly 9.44 million dots, shows fine detail when you check focus manually. The ISO range runs from 100 to 32000. The low base suits bright conditions, while the ceiling may matter in very dark venues. | |
Megapixels ⓘThe higher the number of megapixels, the more detail the cameras sensor can capture. | 50.1 MP050 |
Image resolution ⓘImage resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution. | 8640 x 5760 |
Sensor type ⓘThe camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality. | CMOS |
Sensor size ⓘThe sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture. | 24 x 35.9 |
Sensor format ⓘRefers to the most commonly used sensor sizes. | |
Continuous shooting ⓘThe number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode. | 30 fps045 |
Lens mount ⓘThe lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras. | Sony FE |
Image processor ⓘThe image processor in the camera converts the information collected on the sensor for digital storage on the memory card. | Dual Bionz XR |
Aspect ratio ⓘThe aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3. | |
Min ISO ⓘRefers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image. | 10030200 |
Max ISO ⓘRefers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise. | 320003003280000 |
Min ISO (expanded) ⓘExpanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary. | 5030200 |
Max ISO (expanded) ⓘExpanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary. | 1024003003280000 |
Minimum shutter speed ⓘThe minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory. | 3044080 |
Max shutter speed ⓘThe maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries. | 3200080032000 |
Autofocus points ⓘAutofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings. | 7590300 |
In-body stabilisation ⓘIn-body Stabilization means the camera has a certain technology embedded that counteracts camera shake. | |
Viewfinder type ⓘThe viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens. | Electronic |
| Viewfinder dots | 943718409900000 |
Video86/100 | |
About the Video8K is the headline video capability, and our Video score of 86 is very good. Maximum resolution and frame rate are its main strengths, and those 8K pixels leave room to crop or reframe footage in editing. Frame rates reach 120 fps, which allows slow-motion playback at normal speed. The maximum resolution and the maximum frame rate are separate specifications, so confirm the combined modes you need before planning a shoot. Audio recording is well covered, with LPCM options up to four channels at 48 kHz and 24 bit, alongside AAC-LC stereo. The camera does not assemble a timelapse movie in-body, so sequence creation belongs in the edit after capture. | |
Video ⓘIndicates if this camera is capable of recording video. | |
Max video resolution ⓘThe best resolution this camera can capture video in. Modern cameras can capture up to 8K video. | |
Max video format ⓘVideo resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video. | 7680 x 4320 |
Max video frame rate ⓘHow many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect. | 120 fps |
Timelapse built in ⓘA built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video. | No |
Video file format ⓘDifferent cameras can record in various video file formats. The File format you record in can impact how you edit and use the files. | LPCM 2ch(48 kHz 16bit), LPCM 2ch(48 kHz 24bit), LPCM 4ch(48 kHz 24bit), MPEG-4 AAC-LC 2ch |
Features83/100 | |
About the FeaturesThe 3-inch touchscreen has 1.44 million dots and flips out, so it supports framing from varied angles rather than a fixed rear position. Live view keeps the rear display available for composition, and our Features score of 83 is very good. The body is weather sealed, which helps in dust and drizzle, though sealing is not the same as waterproofing. There is no built-in flash, but the camera supports an external unit when you need added light. Wi-Fi and Bluetooth are built in. Live view is on hand for composition. There is no built-in GPS, so the camera itself does not tag images with location data. | |
Builtin flash ⓘA built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it. | No |
External flash ⓘExternal flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera. | |
GPS ⓘGPS features in a camera will include location metadata to each of your photographs. | No |
Weather sealing ⓘWeather sealing capabilities will give you more confidence when shooting in unfavourable conditions. | |
| Screen type | LCD |
Touch screen ⓘTouchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons. | |
| Screen size | 3" |
Screen dots ⓘScreen dots indicate the resolution of the LCD screen by including each sub pixel. | 14400001150001500000 |
Flip screen ⓘA flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles. | |
Live view ⓘLive View feature allows you to see a continuous live video of what is being seen through your lens. | |
Wi-Fi ⓘBuilt-in Wi-Fi allows you to connect your camera and share images wirelessly. | |
Bluetooth ⓘBluetooth capabilities allow you wireless control of your camera with other external devices. | |
Storage & Battery73/100 | |
About the Storage & BatteryTwo card slots accept SD (UHS-II compatible) and CFexpress Type A media. That combination matters when 50 megapixel stills and 8K video generate large files, and a second slot adds flexible capacity on long shoots. The NP-FZ100 battery is rated at 530 shots, a test figure rather than a promise for every situation. Endurance is the weaker part of this section, and it explains why our storage and battery score of 73 is good rather than higher. A spare battery is sensible for heavy days. USB charging lets you top the battery up between shoots, which is useful on travel days or long assignments. | |
| Memory card | SD,CFexpress Type A (UHS-II compatible) |
| Dual memory card slots | |
| Battery type | NP-FZ100 |
Battery life ⓘApproximately how long this cameras battery will last measured by how many photographs you will be able to take. | 530 shots1505000 |
| USB charging | |