The A55 features a 16.2MP sensor and employs translucent mirror technology, allowing for speedy continuous shooting and quick autofocus. On the other hand, the A57 boasts a higher resolution with a 16.1MP sensor and offers improved performance in low-light conditions. Additionally, the A57 introduces an enhanced electronic viewfinder and a higher maximum ISO setting, providing photographers with more flexibility in various shooting environments.
Key Takeaways
- The Sony A55 and A57 are digital single-lens reflex (DSLR) cameras.
- The A57 has a higher resolution sensor and faster continuous shooting speed than the A55.
- Both cameras offer similar features, including interchangeable lenses, high-definition video recording, and image stabilization.
Sony A55 vs Sony A57
Sony A55 is a camera that has a 16.2 megapixel sensor, in-body image stabilization, full HD recording, and a 15-point autofocus system. The Sony A57 is a camera that has a 16.1 megapixel sensor, in-body image stabilization, full HD recording with continuous autofocus, with improved object tracking.
Sony A55 is a 2010 launched HD camera fully with a 16 MP APS-C CMOS Sensor. It is fitted with sensor-shift image stabilization and also has longer battery life.
This camera is capable of recording full HD 1080p videos. Another characteristic of this camera is that it has a built-in GPS.
A57 is also a 2012 launched camera by Sony. It is a full HD camera with a similar 16 MP APS-C CMOS Sensor. It is also fitted with sensor-shift image stabilization and has fair battery life.
It is capable of recording full HD 1080i videos, which are the most important characteristics that set it apart from the A55.
Comparison Table
| Feature | Sony A55 | Sony A57 |
|---|---|---|
| Sensor | 16.1 megapixel CMOS | 16.1 megapixel Exmor CMOS (higher image quality) |
| Autofocus | 11-point phase-detection | 15-point phase-detection (faster and more accurate) |
| ISO Range | 100 – 16000 (expandable to 25600) | Same |
| Viewfinder | Tilting electronic viewfinder (EVF) | Tilting electronic viewfinder (EVF) with slightly lower resolution but improved eyepoint |
| LCD Screen | Same 3.0-inch VGA (640 x 480) resolution | Same |
| Video | Full HD (1080p) at 30 fps | Full HD (1080p) at 30 fps with manual controls |
| Continuous Shooting | 10 fps | 12 fps (faster) |
| Body | Slightly smaller and lighter | Slightly larger and heavier |
| Other Features | Object Tracking AF, 2x Clear Image zoom |
What is Sony A55?
The Sony A55 is a versatile digital single-lens reflex (DSLR) camera that caters to both amateur and enthusiast photographers. Released as part of Sony’s Alpha series, the A55 combines advanced technology with user-friendly features, making it a popular choice for those looking to step up their photography game.
Key Features of Sony A55
High-Speed Translucent Mirror Technology
At the heart of the Sony A55 is its innovative Translucent Mirror Technology, allowing for a fixed semi-transparent mirror that enables faster and more accurate phase-detection autofocus during both still photography and video recording. This technology sets the A55 apart from traditional DSLRs, providing a unique shooting experience.
16.2-Megapixel Exmor APS HD CMOS Sensor
The A55 boasts a 16.2-megapixel Exmor APS HD CMOS sensor, delivering high-resolution images with vibrant colors and impressive detail. This sensor performs exceptionally well in various lighting conditions, ensuring sharp and clear photographs even in challenging situations.
Full HD Video Recording
For videographers, the A55 offers Full HD 1080p video recording at 60i or 24p, allowing users to capture cinematic-quality footage with ease. The continuous phase-detection autofocus ensures that your videos stay sharp and focused, making it a reliable choice for content creators.
3-Inch Articulating LCD Screen
The A55 features a 3-inch articulating LCD screen, providing flexibility for shooting from various angles. Whether shooting overhead or at low angles, the tilting screen enhances the overall user experience and aids in composing the perfect shot.
Electronic Viewfinder (EVF)
Complementing the LCD screen is the high-resolution electronic viewfinder, offering a clear and detailed preview of your shot. The EVF provides a real-time view of exposure settings, white balance, and other essential information, allowing photographers to make informed decisions before pressing the shutter button.
10 Frames Per Second Continuous Shooting
The A55’s impressive 10 frames per second continuous shooting speed makes it well-suited for capturing fast-paced action and ensuring you don’t miss a moment. This feature, combined with the advanced autofocus system, makes the camera ideal for sports and wildlife photography.
Built-in GPS for Geotagging
Geotagging enthusiasts will appreciate the built-in GPS functionality of the A55. This feature allows users to embed location information directly into their photos, adding an extra layer of context to their photographic journey.
What is Sony A57?
The Sony A57 is a digital single-lens reflex (DSLR) camera that was released as part of Sony’s Alpha series. Introduced in 2012, the A57 is designed to cater to both amateur and enthusiast photographers, offering a compelling blend of advanced features and user-friendly functionality.
Key Features
1. Sensor and Image Quality
The Sony A57 boasts a 16.1-megapixel APS-C Exmor sensor, delivering impressive image quality with rich details and vibrant colors. The camera’s BIONZ image processor enhances speed and accuracy, contributing to low-light performance and reducing noise levels.
2. Translucent Mirror Technology
One of the standout features is its Translucent Mirror Technology, allowing for fast and continuous autofocus during both still photography and video recording. This technology sets the A57 apart by providing a seamless shooting experience.
3. Autofocus System
The A57 incorporates a 15-point phase-detection autofocus system, ensuring quick and accurate focus acquisition. This is particularly beneficial for capturing fast-moving subjects or when shooting in challenging lighting conditions.
4. High-Resolution LCD Screen
Equipped with a 3-inch tilt-and-swivel LCD screen, the A57 offers flexibility for composing shots from various angles. The high-resolution display enhances the overall user experience and facilitates precise framing.
5. Full HD Video Recording
For videographers, the A57 supports Full HD 1080p video recording at various frame rates. The combination of the Translucent Mirror Technology and autofocus capabilities makes it a reliable choice for capturing smooth and sharp video footage.
6. Electronic Viewfinder
Complementing the LCD screen is an electronic viewfinder (EVF) that provides a clear and detailed preview of the scene. The EVF is especially useful in bright outdoor conditions, offering a traditional shooting experience.
Design and Ergonomics
1. Build Quality
The A57 features a durable and lightweight body, making it suitable for extended shooting sessions without causing fatigue. The well-designed grip ensures a comfortable and secure hold, contributing to overall user satisfaction.
2. Intuitive Controls
With a user-friendly interface, the A57 incorporates intuitive controls and customizable buttons, allowing photographers to tailor the camera settings to their preferences. This ease of use enhances the overall shooting experience.
Connectivity and Additional Features
1. Connectivity Options
Equipped with HDMI and USB ports, the A57 facilitates easy connectivity to external devices for image transfer and live view shooting. Additionally, the camera supports Memory Stick PRO Duo and SD/SDHC/SDXC memory cards.
2. Creative Modes and Artistic Filters
To cater to creative expression, the A57 offers a variety of shooting modes and artistic filters. From panoramic modes to creative styles, users have the flexibility to experiment with different styles and effects.
Main Differences Between Sony A55 and A57
- Sensor Resolution:
- A55: 16.2 megapixels
- A57: 16.1 megapixels
- Autofocus Points:
- A55: 15 autofocus points
- A57: 15 autofocus points (cross-type)
- Continuous Shooting Speed:
- A55: Up to 10 frames per second
- A57: Up to 12 frames per second
- LCD Screen:
- A55: 3-inch, 921k-dot articulated screen
- A57: 3-inch, 921k-dot articulated screen
- Viewfinder:
- A55: Electronic viewfinder with 1.44 million dots
- A57: Electronic viewfinder with 1.44 million dots
- Video Recording:
- A55: Full HD 1080p at 60fps
- A57: Full HD 1080p at 60fps
- ISO Range:
- A55: 100 – 12800
- A57: 100 – 16000
- Built-in GPS:
- A55: No
- A57: Yes
- Battery Life:
- A55: Approximately 330 shots
- A57: Approximately 550 shots
- Weight:
- A55: Approximately 441g
- A57: Approximately 618g (including battery and memory card)
- https://platform.almanhal.com/Files/Articles/101094
- https://www.acadpubl.eu/hub/2018-118-24/1/111.pdf
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