Sony SLT Alpha 77
Sony · DSLR · 24.3 MP · APS-C · Full HD video

Score Breakdown
Scores combine our editorial testing with published lab data.
Independent Lab Scores
General | |
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About This CameraThe Sony SLT Alpha 77 is a 2011 A-mount camera with DSLR-style handling and a 24.3 megapixel APS-C sensor. Weighing 732 g and measuring 143 x 104 x 81 mm, it has the bulk and grip expected of a camera from this class. That combination suits photographers who want resolution for large prints alongside a quick burst rate for action. An electronic viewfinder with 2,359,000 dots previews the scene as the sensor captures it, which helps when you are working light on the fly. Owning it means accepting some older design choices: one card slot, no touchscreen and no USB charging. A little planning around storage and power lets the camera get on with delivering detailed files. | |
| Brand | Sony |
| Model | SLT Alpha 77 |
Released ⓘRefers to the year this camera was officially made available for sale. | 2011 |
Announcement date ⓘRefers to the date the manufacturer publicly announced the upcoming release and general specs of this camera. | August 24, 2011 |
| Camera type | |
| Camera size | 143 x 104 x 81 mm |
| Camera weight | 732 g |
Optics70/100 | |
About the OpticsResolution is the headline. 24.3 megapixels on an APS-C CMOS sensor give plenty of scope for large prints and heavy cropping. The Alpha DT mount puts the Sony A-mount lens range behind those pixels, which matters if you already own or can find A-mount glass. The optics score of 70 reflects a good stills package, and this camera sits in the top 25% of cameras in our database for Optics. In-body stabilisation contributes to that, reducing camera shake so you can handhold at slower shutter speeds. Speed is well covered too. The shutter reaches 1/8000 s, which helps control exposure in bright conditions, and the burst rate is specified up to 12 fps. Treat that figure as a maximum for peak moments rather than a speed the camera sustains indefinitely. The trade-off is sensitivity headroom. The ISO range runs from 100 to 16000. Autofocus uses 19 points. | |
Megapixels ⓘThe higher the number of megapixels, the more detail the cameras sensor can capture. | 24.3 MP050 |
Image resolution ⓘImage resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution. | 6000 x 4000 |
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. | 15.6 x 23.5 |
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. | 12 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 Alpha DT |
Image processor ⓘThe image processor in the camera converts the information collected on the sensor for digital storage on the memory card. | Bionz |
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. | 160003003280000 |
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. | 160003003280000 |
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. | 800080032000 |
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. | 190300 |
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 | 235900009900000 |
Video56/100 | |
About the VideoThe video offering scores 56, a modest result that matches what is supplied. The maximum recording resolution is Full HD, and the fastest frame rate offered is 60 fps, with files written in AVCHD or MP4. Full HD covers online sharing and standard playback, and there is no 4K option here. The 60 fps frame rate gives you smooth motion when filming moving subjects. You can record in either AVCHD or MP4, which gives a choice of file format for playback and storage. There is no built-in timelapse mode, so interval work needs a separate intervalometer or post-processing workaround. On the plus side, the flip-out LCD helps with framing at low or awkward angles while recording. | |
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. | 1920 x 1080 |
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. | 60 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. | AVCHD, MP4 |
Features54/100 | |
About the FeaturesThe features score of 54 is modest, and the 2011 design shows in places. The 3-inch LCD has 921,000 dots and flips out for waist-level or overhead shots, but there is no touchscreen, so setting changes happen through the physical controls. WiFi is built in, while Bluetooth is absent, so WiFi is the only built-in wireless connection. GPS is built in, which is useful for tagging travel and landscape photos with their shooting location. A built-in flash covers fill light, and an external flash can be added when you need more power. The body carries weather sealing, which helps when shooting in dust or damp conditions. It is protection rather than a waterproof guarantee, so treat it accordingly. | |
Builtin flash ⓘA built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it. | |
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. | |
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. | No |
| Screen size | 3" |
Screen dots ⓘScreen dots indicate the resolution of the LCD screen by including each sub pixel. | 9210001150001500000 |
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. | No |
Storage & Battery27/100 | |
About the Storage & BatteryStorage and battery is the weakest area, with a section score of 27. There is one card slot, accepting SD, SDHC and SDXC cards or Memory Stick Pro Duo and Pro-HG Duo media. A single slot means no in-camera backup, so for one-off events carry spare cards rather than relying on a second copy. The NP-FM500H battery is rated for 470 shots, a specification figure rather than a promise for every outing, so a second battery is sensible for long shoots. There is no USB charging, so you cannot top the camera up from a power bank between locations. Factor charger access into your shooting plan. | |
| Memory card | SD / SDHC / SDXC, Memory Stick Pro Duo / Pro-HG Duo |
| Dual memory card slots | No |
| Battery type | NP-FM500H |
Battery life ⓘApproximately how long this cameras battery will last measured by how many photographs you will be able to take. | 470 shots1505000 |
| USB charging | No |