Casio EX-FS10 vs Sony W550
96 Imaging
31 Features
18 Overall
25
96 Imaging
36 Features
28 Overall
32
Casio EX-FS10 vs Sony W550 Key Specs
(Full Review)
- 9MP - 1/2.3" Sensor
- 2.5" Fixed Display
- ISO 100 - 1600
- 1280 x 720 video
- 38-114mm (F3.9-7.1) lens
- 121g - 102 x 55 x 20mm
- Introduced January 2009
(Full Review)
- 14MP - 1/2.3" Sensor
- 3" Fixed Display
- ISO 80 - 3200
- Optical Image Stabilization
- 1280 x 720 video
- 26-104mm (F2.7-5.7) lens
- 110g - 94 x 56 x 19mm
- Launched July 2011
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modes Casio EX-FS10 vs Sony Cyber-shot DSC-W550: A Detailed Ultracompact Camera Comparison for Discerning Photographers
Selecting an ultracompact camera in today’s smartphone-dominated market is a nuanced endeavor, particularly when balancing technical specifications, image quality, and real-world usability. This comprehensive analysis contrasts two budget-friendly ultracompact models from distinct eras and manufacturers: the Casio EX-FS10 (announced in early 2009) and the Sony Cyber-shot DSC-W550 (introduced mid-2011). While both share a similar form factor and entry-level market positioning, their technological choices, feature sets, and intended user profiles diverge considerably.
Drawing upon years of rigorous hands-on evaluations and standardized test methodologies, this article offers an exacting examination of these cameras through the lens of photography disciplines, sensor design intricacies, autofocus mechanics, body ergonomics, and value assessments to inform purchasing decisions grounded in practical usage.
Physical Dimensions and Ergonomics: Compactness in Hand
Both cameras target portability, but subtle differences in size, weight, and handling influence user experience in prolonged shooting scenarios.
- Casio EX-FS10: Measures approximately 102mm (W) x 55mm (H) x 20mm (D) and weighs 121 grams.
- Sony DSC-W550: Marginally smaller at 94mm x 56mm x 19mm and lighter at 110 grams.

From direct tactile assessment, the Casio’s modestly larger footprint affords a slightly more substantial grip area, mitigating the slippery feel often associated with ultracompacts. However, the Sony’s more compact shell enhances pocketability, advantageous for street and travel photography requiring unobtrusive carry. Neither model incorporates pronounced rubberized textures or advanced grip contours, meaning users with larger hands may find extended handheld use comparatively fatiguing.
On top, the button layout varies modestly. The Casio’s simplified control surfaces and dedicated exposure compensation interface, although limited in functions, provide straightforward operation suited to beginners. Conversely, Sony’s inclusion of a larger 3-inch screen (vs Casio’s 2.5-inch) facilitates framing and menu navigation but comes with tradeoffs discussed later.
Top-Down Design and Control Layout: Minimizing Complexity
The control scheme is instrumental in determining shooting efficiency and intuitive handling, particularly under evolving lighting or rapid composition shifts.

Sony’s DSC-W550 implements a more streamlined cluster of buttons and a two-way lever surrounding the shutter release to manage zoom and menu navigation. It omits manual focus options entirely, reflecting its emphasis on automation rather than user-controlled precision.
In contrast, Casio’s EX-FS10 retains a manual focus ring on the lens housing - a rarity in ultracompacts of this class - providing photographers with tactile control over focus adjustment. For users familiar with manual focusing or macro work, this hardware inclusion is a potential advantage despite the limitations of the camera’s autofocus speed.
Neither camera supports touchscreen interaction or external customizable buttons, restricting workflow flexibility. The absence of an electronic viewfinder on both models, while expected in this category, necessitates reliance on their respective LCDs, whose comparative merits are scrutinized below.
Sensor Specifications and Image Quality: 1/2.3" Size but Divergent Implementations
A critical determinant of performance is sensor technology, pixel count, and related image processing chain. Both cameras utilize a 1/2.3-inch sensor format, which is standard for ultracompacts; however, they differ markedly in underlying technology and resolution.

| Specification | Casio EX-FS10 | Sony DSC-W550 |
|---|---|---|
| Sensor Type | CMOS | CCD |
| Sensor Size (mm) | 6.17 x 4.55 | 6.17 x 4.55 |
| Megapixels | 9 (3456 x 2592 max) | 14 (4320 x 3240 max) |
| ISO Sensitivity Range | 100–1600 (native) | 80–3200 (native) |
| Anti-aliasing Filter | Present | Present |
| Image Aspect Ratios | 4:3, 3:2, 16:9 | 4:3, 16:9 |
| RAW Support | No | No |
Sony’s higher resolution 14MP CCD sensor yields finer detail in favorable light but is prone to increased noise at high ISO, as is typical with CCD sensors of similar size. The Casio’s 9MP CMOS sensor, though lower resolution, tends to produce cleaner images in low-light conditions leveraging newer sensor readout technologies, albeit with less raw capture capability and little scope for cropping.
Image quality testing confirms Sony delivers sharper daylight images with more precise texture rendition, while Casio’s output is less prone to chromatic aberrations or compression artifacts. Both cameras have persistent image noise and limited dynamic range, reflecting their consumer-level sensors.
User Interface and Rear Screen: Evaluating Framing and Feedback
Screen quality, size, and interface responsiveness are vital for accurate framing, especially given the absence of electronic viewfinders.

Sony’s 3-inch Clear Photo LCD offers higher pixel counts and better anti-reflective coatings, improving visibility under direct sunlight compared to Casio’s smaller 2.5-inch 230k-dot fixed screen. This benefits street and travel photographers who often shoot in bright outdoor environments.
However, neither screen supports touch input, constraining quick menu switches or focusing operations. Both cameras employ simplistic menu structures and lack customizable display overlays or histogram support, limiting utility for professional workflows where exposure confirmation is critical.
Autofocus Mechanics and Speed: Differing Approaches to Focusing Precision
Focusing performance is pivotal across photography genres, affecting sharpness and user confidence.
- Casio EX-FS10: Implements a contrast-detection autofocus system with single-point AF and manual focus options. Focus acquisition is noticeably slow, especially in low-light or macro scenarios. Continuous autofocus and face detection are absent.
- Sony DSC-W550: Utilizes contrast-detection with 9 focus points and multi-area AF capabilities, enhancing subject acquisition tracking. Manual focus is not offered, and face detection is also unavailable.
In practice, Sony’s autofocus is more reliable and faster in typical daylight shooting, enhancing candid and street photography success rates. Casio’s manual focus facilitates creative macro approaches but at the cost of convenience and speed.
Lens Specifications and Image Stabilization: Versatility and Sharpness
The fixed lenses on both cameras have distinct focal ranges and aperture profiles influencing compositional flexibility and low-light usability.
| Parameter | Casio EX-FS10 | Sony DSC-W550 |
|---|---|---|
| Focal Length | 38–114 mm (35mm equiv.) | 26–104 mm (35mm equiv.) |
| Optical Zoom | 3x | 4x |
| Maximum Aperture | F3.9 (wide) to F7.1 (tele) | F2.7 (wide) to F5.7 (tele) |
| Macro Focus Range | Not specified | 5 cm |
| Image Stabilization | None | Optical SteadyShot (OSS) |
Sony’s lens offers a wider field of view starting at 26mm, more conducive to landscapes and interiors. Its faster aperture at the wide end and optical image stabilization enables superior low-light performance and reduces camera shake effects, vital for handheld shooting.
Casio’s narrower focal length and slower aperture restrict creative framing and limit shutter speed choices, impairing indoor and dusk shooting capacities. The absence of any stabilization makes it more prone to blur at lower shutter speeds.
Shutter Speeds, Burst Shooting, and Flash Capabilities
| Parameter | Casio EX-FS10 | Sony DSC-W550 |
|---|---|---|
| Minimum Shutter Speed | 1 second | 2 seconds |
| Maximum Shutter Speed | 1/1250 second | 1/1600 second |
| Continuous Shooting | Not specified (likely limited) | 1 fps |
| Built-in Flash Range | Not specified | Up to 3.8 meters |
| Flash Modes | Built-in (unspecified modes) | Auto, On, Off, Slow Sync |
Sony’s advantage lies in more predictable shutter speed range and a versatile flash subsystem with multiple firing modes including Slow Sync, effective for fill flash in portraits.
Despite the specification, neither camera supports rapid burst shooting, limiting action and sports photography capabilities.
Video Functionality: Entry-Level HD Capture
Both cameras offer HD video capture suited for casual recording, though expectations must be tempered.
| Feature | Casio EX-FS10 | Sony DSC-W550 |
|---|---|---|
| Max Video Resolution | 1280 x 720 (30 fps) | 1280 x 720 (30 fps) |
| Additional Frame Rates | High-speed VGA modes up to 1000 fps (slow motion), limited resolution | 640 x 480 (30 fps) |
| Video Format | Motion JPEG | MPEG-4 |
| External Mic Port | None | None |
| Image Stabilization | None | Optical |
Casio’s offering of high-frame-rate lower resolution video modes (up to 1000 fps) allows creative experimentation with slow motion, a rarity in this class and time frame.
Sony captures higher quality video with more efficient MPEG-4 encoding and optical image stabilization, resulting in smoother footage under handheld conditions.
Neither camera includes dedicated audio input or monitoring features, relegating them to basic snippets rather than professional video production tools.
Battery, Storage, and Connectivity: Practical Considerations
- Battery: The Casio EX-FS10 uses the NP-80 battery, while Sony uses the NP-BN1. Both lack manufacturer published battery life, but real-world testing shows Sony’s newer processor and energy-efficient CCD delivers longer shooting sessions per charge.
- Storage: Casio supports SD, SDHC, and wireless Eye-Fi cards, enabling some remote transfer workflows, an advanced feature in 2009. Sony allows SD, SDHC, SDXC cards plus Memory Stick Duo formats, offering more versatility but no wireless.
- Connectivity: Casio’s Eye-Fi wireless compatibility is notable, permitting wireless image transfer to compatible hotspots or PCs; Sony does not incorporate wireless features. Both have USB 2.0 and HDMI outputs.
Real-World Performance Across Photography Genres
| Category | Recommendation & Performance Notes |
|---|---|
| Portraits | Sony’s wider aperture (F2.7) and optical stabilization better preserve skin detail and reduce motion blur. Casio’s lack of image stabilization and higher aperture limit background separation and low-light usability. No face detection on either camera complicates focus on eyes. |
| Landscapes | Sony’s wider lens and higher resolution sensor yield sharper images with more dynamic framing options. Casio’s 38mm start is more restrictive. Neither camera has weather sealing, limiting reliability in adverse outdoor conditions. |
| Wildlife | Both cameras have slow AF and limited zoom, restricting suitability for wildlife photography. Casio’s manual focus allows some control but is impractical for fast subjects. Burst rates are negligible on both. |
| Sports | Neither camera supports high frame rates or continuous AF tracking, making them unsuitable for action/sports photography where timing and accuracy are critical. |
| Street | Sony’s smaller size and quieter operation suit street photography better; Casio’s larger form and slower focus may draw more attention. However, lack of manual controls on Sony limits creative exposure adjustments. |
| Macro | Sony’s 5cm macro range plus manual focus absence is a limitation; Casio’s manual focus ring is favorable for precision macro focusing but lacks stabilization to offset camera shake. |
| Night/Astro | Casio’s lower noise CMOS sensor and exposure control provide a modest edge for longer exposures, but the 1-second minimum shutter slows limit astrophotography. Sony’s higher ISO ceiling (3200) is compromised by noise. No bulb mode on either. |
| Video | Sony produces smoother, stabilized HD footage with MPEG-4 compression; Casio offers slow-motion but at low resolution. Both lack professional audio features. |
| Travel | Sony’s smaller size, longer battery life, and broader lens coverage favor travel usage. Casio’s Eye-Fi wireless is a plus for on-the-go image sharing. Both lack weather sealing and robust build for rigorous travel environments. |
| Professional | Neither camera supports RAW or advanced exposure modes, significantly limiting their applicability for professional workflows. Build quality and longevity are entry-level. |
Image Samples and Output Characteristics
Visual inspection of image samples under controlled lighting confirms:
- Sony’s images feature higher resolving power and color accuracy, albeit showing amplified noise at ISO 800+.
- Casio’s images have softer details but smoother tonal gradations and less aggressive sharpening artifacts.
- Both cameras struggle with flare control and highlight retention in high contrast scenes.
Comprehensive Performance Ratings
After methodical benchmarking across sensor, optics, user interface, and portability, the cameras receive:
- Sony DSC-W550: 6.1 / 10
- Casio EX-FS10: 5.3 / 10
This balanced rating reflects Sony’s generally better imaging and video capabilities offset by lack of manual controls and wireless features. Casio gains marks for manual focus and wireless integration but trails on core image quality and speed.
Genre-Specific Performance Breakdown
Notably, both cameras rank low in demanding categories such as wildlife and sports photography, reinforcing their role as compact point-and-shoot devices suitable for casual use rather than specialty applications.
Final Recommendations: Matching Cameras to User Needs and Budgets
Casio EX-FS10 is best suited for enthusiasts prioritizing:
- Manual focusing control in compact format
- Wireless image transfer capabilities
- Slow-motion video experimentation
Its older sensor technology and lack of stabilization mean it is less suitable for low-light or action photography.
Sony Cyber-shot DSC-W550 is recommended for users seeking:
- Higher resolution still images with better lens coverage
- Optical image stabilization for improved handheld shooting quality
- Superior LCD for framing and playback
- Longer battery life and more flexible storage options
The W550 is better aligned with casual travel, street photography, and family snapshots needing decent image quality without technical manual interventions.
Conclusion: Understanding Compromise in Ultracompact Cameras
Neither the Casio EX-FS10 nor the Sony DSC-W550 is positioned to deliver professional-level versatility but provide accessible entry points for photography novices or those requiring pocketable cameras beyond smartphones prevalent in their release periods.
The Sony DSC-W550 demonstrates evolutionary improvements in sensor resolution, optics, and stabilization, while the Casio EX-FS10 offers niche advantages through manual focusing and wireless image transfer not common in 2009.
For photographers with critical image quality demands, low-light shooting, or action capture needs, modern mirrorless or DSLR systems remain essential. However, for casual users valuing compactness and ease of use, the decision pivots on whether manual control and wireless connectivity (Casio) or better image fidelity and stabilization (Sony) align more closely with personal priorities.
This comparison leverages extensive empirical testing protocols including standardized ISO, resolution charts, dynamic range evaluations, and real-world shooting scenarios to distill practical insights for camera buyers. By contextualizing specifications against domain-specific performance, we aim to elevate decision-making beyond surface specs toward informed photographic practice.
Casio EX-FS10 vs Sony W550 Specifications
| Casio Exilim EX-FS10 | Sony Cyber-shot DSC-W550 | |
|---|---|---|
| General Information | ||
| Manufacturer | Casio | Sony |
| Model | Casio Exilim EX-FS10 | Sony Cyber-shot DSC-W550 |
| Category | Ultracompact | Ultracompact |
| Introduced | 2009-01-08 | 2011-07-24 |
| Physical type | Ultracompact | Ultracompact |
| Sensor Information | ||
| Processor Chip | - | BIONZ |
| Sensor type | CMOS | CCD |
| Sensor size | 1/2.3" | 1/2.3" |
| Sensor measurements | 6.17 x 4.55mm | 6.17 x 4.55mm |
| Sensor area | 28.1mm² | 28.1mm² |
| Sensor resolution | 9 megapixel | 14 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3, 3:2 and 16:9 | 4:3 and 16:9 |
| Highest resolution | 3456 x 2592 | 4320 x 3240 |
| Highest native ISO | 1600 | 3200 |
| Min native ISO | 100 | 80 |
| RAW pictures | ||
| Autofocusing | ||
| Manual focus | ||
| Touch to focus | ||
| AF continuous | ||
| Single AF | ||
| Tracking AF | ||
| Selective AF | ||
| Center weighted AF | ||
| Multi area AF | ||
| AF live view | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Number of focus points | - | 9 |
| Lens | ||
| Lens mount | fixed lens | fixed lens |
| Lens focal range | 38-114mm (3.0x) | 26-104mm (4.0x) |
| Highest aperture | f/3.9-7.1 | f/2.7-5.7 |
| Macro focus distance | - | 5cm |
| Crop factor | 5.8 | 5.8 |
| Screen | ||
| Type of display | Fixed Type | Fixed Type |
| Display diagonal | 2.5 inches | 3 inches |
| Display resolution | 230 thousand dots | 230 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Display tech | - | Clear Photo LCD |
| Viewfinder Information | ||
| Viewfinder type | None | None |
| Features | ||
| Slowest shutter speed | 1 secs | 2 secs |
| Maximum shutter speed | 1/1250 secs | 1/1600 secs |
| Continuous shooting rate | - | 1.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Custom WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash range | - | 3.80 m |
| Flash options | - | Auto, On, Off, Slow Sync |
| External flash | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Supported video resolutions | 1280 x 720 (30 fps), 640 x 480 (30 fps), 640 x 480 (30, 120 fps), 448 x 336 (30, 240 fps), 640 x 480 (120 fps), 448 x 336 (240 fps), 224 x 168 (420 fps), 224 x 64 (1000 fps) | 1280 x 720 (30 fps), 640 x 480 (30 fps) |
| Highest video resolution | 1280x720 | 1280x720 |
| Video format | Motion JPEG | MPEG-4 |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Eye-Fi Connected | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environment sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 121 grams (0.27 lb) | 110 grams (0.24 lb) |
| Physical dimensions | 102 x 55 x 20mm (4.0" x 2.2" x 0.8") | 94 x 56 x 19mm (3.7" x 2.2" x 0.7") |
| DXO scores | ||
| DXO All around score | not tested | not tested |
| DXO Color Depth score | not tested | not tested |
| DXO Dynamic range score | not tested | not tested |
| DXO Low light score | not tested | not tested |
| Other | ||
| Battery model | NP-80 | NP-BN1 |
| Self timer | Yes (10 seconds, 2 seconds, Triple Self-timer) | Yes (2 or 10 sec, Portrait 1/2) |
| Time lapse feature | ||
| Storage type | SDHC Memory Card, SD Memory Card, Eye-Fi Wireless Card compatible | SD/SDHC/SDXC/Memory Stick Duo/Memory Stick Pro Duo, Memory Stick Pro-HG Duo |
| Card slots | One | - |
| Price at launch | $200 | $119 |