Sony SLT-A77: The Ultimate Camera for Pro Photographers

This blog post highlights the features and benefits of Sony's best-selling camera, the SLT-A77. From its high-speed shooting capability to its advanced autofocus system, this camera is a game-changer for professional photographers looking to elevate their creative output. We'll explore how this camera can improve your craft, and why it's a must-have for any serious photographer's toolkit.

Written by Victor Chan | Updated: Mon May 01 2023

Sony SLT-A77 article cover photo

Key Features

Oct 25 2011


24 megapixels


Sensor TypeAPS-C

Other similar cameras

Overview of the SLT-A77

The Sony SLT-A77 is a camera designed for professionals who want to take their photography to the next level. With its incredible autofocus system, 24.3 megapixel sensor, and high-speed shooting capability, this camera has become a go-to choice for many top photographers. Whether you are a professional fashion photographer or you just love capturing the world around you, the Sony SLT-A77 is the perfect tool to help you achieve your creative vision. In this blog post, we'll dive into the features that make this camera stand out from the crowd and explain why it's the ultimate tool for any serious photographer.

Sony SLT-A77 Pros and Cons

Now, we will look more closely at our review of the Sony SLT-A77 camera. We will see what it can do and compare it to other cameras like it. We will tell you what's good about it and what's not so good. This way, you'll know if it's the camera for you!


High resolution (24.3MP)
Fast autofocus system (79-point AF)
Weather-sealed body
12fps continuous shooting
Large and bright viewfinder (2.4M dots)
Excellent noise performance in low light
High dynamic range capability
Articulating LCD screen


No built-in image stabilization
Heavy and bulky body
Limited native lens selection
Menu system can be confusing
Video quality not as good as competitors
Battery life could be better
Limited ISO range compared to competitors

Build and Construction

Body and dimensions

Sony SLT-A77

Weather sealed
Dimensions143 x 104 x 81mm

Weather Sealing

The Sony SLT-A77 camera is equipped with environmental seals that make it resistant to weather, preventing water and dust from entering the camera. If you enjoy outdoor photography and need a camera that can handle extreme conditions, the SLT-A77 is an excellent choice.

Design and Handling

Main design features

View FinderElectronic
Screen TypeFully Articulated
Screen Resolution921k dots
Body typeMid-size SLR

Suitable for:

PhotographyAbove Avg.
VideographyAbove Avg.
TravelAbove Avg.

LCD Screen

This camera has a fully articulated 3.00" screen, with a display resolution of 921k dots. This makes the Sony SLT-A77 very suitable for those looking for a vlogging camera as you can view yourself while shooting selfies. Unfortunately, the camera does not have a touch screen, which may make it less user-friendly.


SLT-A77 includes a electronic viewfinder with 2,359k dots of resolution with a coverage of 100% and a magnification of 0.73x. This feature enhances the camera's suitability for outdoor photography in bright conditions.

Image Quality

Sony SLT-A77 has a 24MP sized CMOS sensor. You can shoot at maximum resolution of 24 pixels. Sony SLT-A77 has a native ISO range of 50 - 16000 which can be boosted to null - 25600. It can also save files in RAW format which gives you a wider room for post processing.

Key Features

Oct 25 2011


50 - 16000

ISO Range

Extended ISOnull - 25600
Max resolution6000 x 4000 pixels

DXO Sensor Scores


78 / 102

Color Depth

24 / 26.5

Dynamic Range

13.2 / 14.8

Low Light ISO

801 / 4505

DXO mark sensor scores

The DXOmark rankings indicate that the Sony SLT-A77 camera has excellent color depth performance, which refers to the number of colors the sensor can distinguish. Additionally, its dynamic range is also above average, allowing it to retain low amounts of details in both bright and dark areas of a scene. The camera's low light ISO performance is poor, which is an important factor to consider if you plan to use it in dimly lit indoor environments or at night. Overall the image quality of the SLT-A77 is average

Crop Factor

Camera crop factor (or focal length multiplier) refers to how a camera's sensor size affects the apparent field of view of a lens. Crop factor is determined by comparing the size of a camera's sensor to that of a full-frame sensor, which is a standard reference size for camera sensors.

Size comparison

Medium FormatFull FrameAPS-C (Sony, Nikon)

Crop factor calculator

Crop factor


Full frame equivalent


This camera: APS-C



Connectivity, storage, battery

StorageSD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Battery Life470 shots
Battery ModelNP-FM500H
Wireless Connectivity


The Sony SLT-A77 supports SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo with 1 slots for storage. This may suffice for everyday use. However, for professional applications such as wedding photography, it is not recommended as a memory card malfunction could lead to the loss of all footage.


The Sony SLT-A77 uses the NP-FM500H model of battery pack. This is rated for 470 shots shots which is high. If you intend to take photos or record videos for an extended period, it might be a good idea to bring along additional batteries.

Photography Features


The Sony SLT-A77 has built in flash which is great for event photography and in low light situations. It also offers a flash shoe that allows you to attach external flashes. This provides more versatility in your lighting choices.


The Sony SLT-A77 boasts a maximum mechanical shutter speed of 1/8000s, which is ideal for shooting fast-moving subjects in bright environments, such as in sports photography. Faster shutter speeds enable you to freeze the action and capture every detail, making it easier to get the perfect shot.

With a continuous mechanical shutter speed of n/a or an electronic shutter speed of n/a, this camera is not capable of capturing the perfect moment more easily, making it not as suited for wedding, sports, and wildlife photography. Higher shutter speeds make it easier to capture fast-paced action, ensuring that you never miss the perfect shot.


The Sony SLT-A77 includes phase detection autofocus (AF), with 19 number of focus points.

While contrast detection is generally more accurate and precise, phase detection autofocus is faster and more effective in most situations, particularly when photographing moving subjects.

Phase detection autofocus works by dividing the incoming light into pairs and then analyzing how they intersect on the camera's sensor. This method allows the camera to determine not only if a subject is in focus but also the direction and distance needed to adjust the focus to achieve perfect sharpness.

On the other hand, contrast detection autofocus works by analyzing the contrast of an image and adjusting the focus until the highest contrast is detected. While this method is very accurate, it can be slow, especially in low light conditions or when photographing moving subjects.

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What is the sensor size of the Sony SLT-A77?

The Sony SLT-A77 features a CMOS sensor

Is the Sony SLT-A77 weather sealed?

Yes the SLT-A77 does have weather sealing.

When was the Sony SLT-A77 announced?

The Sony SLT-A77 was announced on Oct 25 2011

Does the Sony SLT-A77 have in-body image stabilization?

Yes the SLT-A77 does have in-body image stabilization that can compensate for camera shake, making it easier to shoot handheld in low light conditions.

What is the ISO range of the Sony SLT-A77?

The SLT-A77 has a native ISO range of 50-16000, which can be expanded to ISO null-25600 for even greater sensitivity in low light conditions.

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