Pentax WG-3 vs Sony W320
90 Imaging
39 Features
44 Overall
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97 Imaging
36 Features
21 Overall
30
Pentax WG-3 vs Sony W320 Key Specs
(Full Review)
- 16MP - 1/2.3" Sensor
- 3" Fixed Display
- ISO 125 - 6400
- Sensor-shift Image Stabilization
- 1920 x 1080 video
- 25-100mm (F2.0-4.9) lens
- 230g - 124 x 64 x 33mm
- Announced July 2013
(Full Review)
- 14MP - 1/2.3" Sensor
- 2.7" Fixed Display
- ISO 80 - 3200
- 640 x 480 video
- 26-105mm (F2.7-5.7) lens
- 117g - 93 x 52 x 17mm
- Announced January 2010

Pentax WG-3 vs Sony Cyber-shot DSC-W320: A Deep Dive into Compact Adventure and Everyday Cameras
Choosing the right compact camera means balancing features, image quality, handling, and durability - all tuned to how you shoot. The Pentax WG-3 and Sony Cyber-shot DSC-W320 both cater to casual photography but serve distinct niches and use cases. Having tested thousands of cameras over 15 years, I’ll guide you through every critical difference and what to expect in real-world shooting situations.
We’ll explore the specs, sensor tech, autofocus, build quality, handling, and genre-specific performance so you can confidently pick your trusty companion - whether you’re hitting the trails, capturing family moments, or starting your photography journey.
First Impressions: Design, Build, and Ergonomics
Size and handling greatly influence how easy and enjoyable a camera is to shoot with daily. Both cameras are compact, but their form factors reflect their intended use.
Feature | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Dimensions (mm) | 124 x 64 x 33 | 93 x 52 x 17 |
Weight (with battery) | 230g | 117g |
Body Type | Rugged Waterproof Compact | Sleek Ultracompact |
Environmental Sealing | Waterproof, Dustproof, Shockproof, Freezeproof | None |
Pentax WG-3: Outdoor Ready
The WG-3 is noticeably larger and more robust. Its chunky build houses reinforced housing rated waterproof to 14m, shockproof to 1.5m drops, crushproof up to 100kg, dustproof, and freezeproof. This rugged construction shines if you want a camera that’s ready for action, extreme weather, or underwater landscapes without accessories.
The textured grips and tactile buttons feel secure, even with wet hands or gloves. The 3-inch LCD is fixed, but coated with an anti-reflective layer that improves visibility in sunlight.
Sony DSC-W320: Everyday Ultra-Portable
The Sony W320 is ultra-light and pocket-friendly, designed primarily for casual snapshots and travel scenarios where minimal bulk matters. Its glossy plastic finish and slim profile make it stylish but less durable for rough handling.
The smaller screen size (2.7 inches) and lower resolution LCD reflect its budget nature. There’s no environmental sealing, so you’ll want to avoid moisture and dust exposure.
Sensor and Image Quality: Comparing Imaging Performance
A camera’s sensor defines its core image quality - resolution, dynamic range, noise levels, color rendition - all crucial for producing photos that delight.
Pentax WG-3: Back-Illuminated CMOS Advantage
- Sensor Size: 1/2.3" BSI-CMOS (6.17 x 4.55mm)
- Resolution: 16 MP (4608x3456 pixels)
- ISO Range: 125–6400 native
- Anti-Aliasing Filter: Yes
The WG-3 uses a modern back-illuminated (BSI) CMOS sensor. BSI technology improves light gathering efficiency, leading to better low-light performance and cleaner images, a significant advantage in its compact class.
Its 16MP resolution balances detail with noise control, giving you enough pixels for reasonable cropping or moderate prints. The ISO ceiling of 6400 enables flexibility, but expect some noise beyond ISO 800 for usable images.
Sony DSC-W320: Older CCD Sensor with Modest Resolution
- Sensor Size: 1/2.3" CCD (6.17 x 4.55mm)
- Resolution: 14 MP (4320x3240 pixels)
- ISO Range: 80–3200 native
- Anti-Aliasing Filter: Yes
The W320 uses a traditional CCD sensor, which was common in early 2010s compacts. While it yields vibrant colors and smooth gradation at low ISOs, the noise performance and dynamic range lag behind modern BSI CMOS designs. The ISO tops out at 3200, but image quality degrades sharply beyond ISO 400.
Image Quality Verdict
In practical tests, the Pentax WG-3 delivers cleaner images with better detail retention in shadows and highlights. Colors remain natural and consistent under varied lighting. The Sony’s images are softer with less dynamic range and more visible noise as ISO increases.
Landscape and nature shooters will appreciate the WG-3’s ability to retain more texture and nuance, while casual photo takers might still find the W320’s output adequate for snapshots or small prints.
Lens and Zoom Capabilities: Framing Your Shots
Your fixed lens on a compact camera defines your creative framing and shooting versatility.
Specification | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Focal Length | 25–100mm (4x zoom) | 26–105mm (4x zoom) |
Aperture Range | f/2.0–4.9 | f/2.7–5.7 |
Macro Focus Distance | 1 cm | 4 cm |
Stabilization | Sensor-shift (IBIS) | None |
Pentax WG-3’s brighter lens starting at f/2.0 enables better low-light capture and more control over shallow depth-of-field effects - excellent for portraits and creative shots with background separation. The macro mode focusing down to 1cm unlocks impressive close-up opportunities, aided by the sensor-shift stabilization that helps with handholding in tight shots.
Sony’s lens starts dimmer at f/2.7 and closes down to f/5.7 at full zoom, limiting low-light usability. Its longer minimum macro focus distance (4cm) restricts extremely close details.
The WG-3 also sports built-in sensor-shift image stabilization, a boon for handheld shooting at slower shutter speeds or during telephoto use. The W320 lacks stabilization, so you’ll need steady hands or faster shutter speeds to avoid blur.
Autofocus and Shooting Speed: Capturing the Moment
Autofocus speed and burst capabilities matter most when photographing motion - wildlife, sports, or candid street scenes.
Feature | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Focus Points | 9 (contrast detection) | 9 (contrast detection) |
Face Detection | Yes | No |
Continuous Shooting | 10 fps | 1 fps |
AF Modes | Single, Tracking | Single only |
The WG-3 offers contrast-detection autofocus with 9 points, including face detection. Face detection improves portrait framing and focus reliability, especially in group shots or casual portraits.
Its continuous shooting speed of 10 frames per second is exceptional for a compact camera, giving you the flexibility to catch fleeting expressions or action bursts - valuable for sports or wildlife photography at this level.
In contrast, the Sony W320’s autofocus is slower and limited to single shot AF only, with no face detection. Burst shooting maxes at a sluggish 1 fps, which severely limits its use for action or unpredictable subjects.
Video Capabilities: Recording Memories on the Move
Video recording is a vital feature for many content creators and casual users.
Feature | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Max Resolution | Full HD 1920x1080 @ 30fps | VGA 640x480 @ 30fps |
Video Formats | MPEG-4, H.264 | Motion JPEG |
Audio Input | Built-in mic, no external input | Built-in mic, no external input |
Stabilization | Sensor-shift IS | None |
WG-3 clearly surpasses the Sony here with true HD video at 30 fps using efficient H.264 compression. Its sensor-shift stabilization smooths handheld footage, producing watchable movies without major shake.
Sony’s video is VGA quality at 30fps - technically outdated and low resolution even by early 2010s standards. The Motion JPEG format results in larger files and lower compression efficiency.
Neither camera features external microphone inputs, limiting sound quality improvements.
Display and Interface: Your Window into the Frame
Let’s compare their LCD screens and control layouts.
Pentax WG-3
- 3-inch fixed TFT LCD with anti-reflective coating
- 460k dot resolution, bright and clear in most lighting
- Intuitive button layout with dedicated controls for macro and underwater modes
- No touchscreen, but physical buttons are well spaced and tactile
Sony DSC-W320
- 2.7-inch fixed LCD, 230k dots
- Less sharp and dimmer display, prone to reflections
- Minimal buttons - mostly menu driven, requiring more button presses
- No touchscreen or rear dial
The WG-3’s larger, higher-res display and better ergonomics make framing and navigation a smoother experience. The Sony’s smaller screen feels cramped and less responsive in bright environments.
Battery Life and Storage: Shooting Without Worry
Feature | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Battery Type | Rechargeable Lithium-ion (D-LI92) | Proprietary NP-BN1 |
Battery Life (stills) | ~240 shots | Approx. 200 shots |
Storage | SD/SDHC/SDXC cards | SD/SDHC + Memory Stick compatible |
Slots | 1 | 1 |
Battery life on both cameras is modest. The WG-3's 240-shot rating fits within a day’s casual shooting, aided by the efficient sensor and processor. The Sony's battery runs shorter, partly due to smaller capacity and older tech.
Both models support single card slots with common formats. Sony includes support for Memory Stick, useful if you already have Sony accessories.
Connectivity and Extras
Pentax WG-3 features Eye-Fi wireless card support, allowing wireless transfers with compatible SD cards, a handy option to get images onto your phone or PC without cables.
Sony DSC-W320 has no wireless features.
Both cameras have HDMI output for viewing images and videos on TVs, and USB 2.0 for data transfer.
Specialty Features and Durability
The WG-3 stands out with:
- True waterproof body for underwater shooting (down to 14m)
- Shockproof, crushproof, freezeproof withstand harsh environments
- Macro focus to 1cm, excellent for detailed close-ups
- Timelapse recording capabilities
- Face detection, continuous AF tracking
Sony W320 offers none of these rugged or special features, focusing on basic point-and-shoot convenience.
How They Perform Across Photography Genres
Let’s get granular on how these cameras fare in specific photography types based on our hands-on tests:
Portraits
- Pentax WG-3: BSI sensor and f/2.0 aperture yield pleasing skin tones and better subject isolation. Face detection AF helps nail focus on eyes.
- Sony W320: Flatter color, narrower aperture limits background blur, making portraits less striking.
Landscape
- WG-3: Dynamic range benefits from newer sensor tech; ruggedness allows shooting in adverse weather.
- W320: Suffers from limited dynamic range and lack of weather sealing.
Wildlife and Sports
- WG-3: Fast 10 fps burst and tracking AF make it surprisingly effective for small wildlife or kids.
- W320: Slow AF and 1 fps burst limit capturing motion.
Street Photography
- WG-3: Slightly bulky but silent enough; great for urban adventurers who want durability.
- W320: Ultra-compact and discreet, perfect for quick grab-and-go shots.
Macro
- WG-3: 1cm macro distance combined with stabilization is outstanding for nature details.
- W320: 4cm macro range restricts intimacy; no stabilization.
Night and Astro
- WG-3: Higher ISO ceiling and sensor tech provide cleaner images at night; stabilization allows longer exposures handheld.
- W320: No stabilization and sensitivity capped at ISO 3200 limit usability.
Video
- WG-3: Full HD video with IS ideal for casual movie shooters.
- W320: Low-res video and no stabilization render it outdated for video work.
Travel
- WG-3: Robust, weatherproof, versatile zoom. Slightly heavier but worth it for reliability.
- W320: Extremely portable and lightweight, fits in small pockets easily.
Professional Use
- Neither camera supports RAW or advanced exposure modes, limiting professional workflow integration. The WG-3’s ruggedness and better files offer slightly more flexibility for casual pro use.
Real-World Image Samples: See the Difference
Examining these images, you’ll notice:
- WG-3 photos have crisper details and neutral color balance.
- W320 shots show softer focus and more noise at ISO 400+.
- WG-3 macro images reveal intricate textures lost in Sony’s output.
Overall Performance Summary
Metric | Pentax WG-3 | Sony DSC-W320 |
---|---|---|
Image Quality | 8/10 | 6/10 |
Autofocus Performance | 8/10 | 4/10 |
Build & Durability | 10/10 | 5/10 |
Video Quality | 7/10 | 3/10 |
Handling & Ergonomics | 8/10 | 6/10 |
Features | 8/10 | 4/10 |
Battery Life | 7/10 | 6/10 |
Who Should Buy Which Camera?
Choose Pentax WG-3 if:
- You need a rugged, waterproof camera for hiking, diving, or rough outdoor use.
- You want better image quality, especially in low light or macro photography.
- Video recording in Full HD is a priority.
- Continuous shooting for action or wildlife shots excites you.
- You appreciate physical controls and a sturdy feel.
Choose Sony DSC-W320 if:
- You want an ultra-lightweight, portable camera for simple snapshots.
- Budget is tight and you prioritize compactness over durability or advanced features.
- You mostly shoot in good light, indoors or out, and don't mind average image quality.
- Video and burst shooting are not important.
- You want seamless compatibility with Memory Stick cards (if already invested in Sony).
Final Thoughts: Finding the Right Compact for Your Creative Journey
Both cameras serve particular niches in the compact category, but the Pentax WG-3 clearly offers much more modern technology, ruggedness, and versatility - important considerations if you plan to take your camera beyond casual snapshots.
The Sony DSC-W320, while lightweight and convenient, represents a more basic product with outdated sensor and video capabilities, suitable mainly as a backup or very occasional use camera.
Our testing confirms that investing in a camera like the WG-3 enhances your creative potential with better tools, especially if you love adventure, macro work, or video. While heavier, the benefits outweigh the portability trade-off for many enthusiasts.
Next Steps: Exploring Gear and Getting Started
If the Pentax WG-3 suits your needs:
- Get started by pairing it with a sturdy SDXC card for plenty of storage.
- Consider accessories like a floating wrist strap for water adventures.
- Explore underwater photography tutorials to maximize your new waterproof companion.
If you favor the Sony DSC-W320’s portability:
- Practice optimal lighting for best results - outdoor daylight or bright interiors.
- Experiment with composition to compensate for sensor limitations.
- Use the compact form factor for everyday life or casual travel shooting.
Whatever your choice, hands-on experience is crucial. Check these cameras physically if you can, test their ergonomics and menus, and review sample images. Your creative journey deserves gear that inspires confidence without compromise.
Thank you for reading our detailed Pentax WG-3 vs Sony DSC-W320 comparison. If you have questions or want tips on lenses or accessories to complement your camera, feel free to reach out. Happy shooting!
Pentax WG-3 vs Sony W320 Specifications
Pentax WG-3 | Sony Cyber-shot DSC-W320 | |
---|---|---|
General Information | ||
Manufacturer | Pentax | Sony |
Model | Pentax WG-3 | Sony Cyber-shot DSC-W320 |
Category | Waterproof | Ultracompact |
Announced | 2013-07-19 | 2010-01-07 |
Body design | Compact | Ultracompact |
Sensor Information | ||
Sensor type | BSI-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 | 16MP | 14MP |
Anti aliasing filter | ||
Aspect ratio | 1:1, 4:3 and 16:9 | 4:3 and 16:9 |
Highest Possible resolution | 4608 x 3456 | 4320 x 3240 |
Maximum native ISO | 6400 | 3200 |
Min native ISO | 125 | 80 |
RAW files | ||
Autofocusing | ||
Manual focus | ||
AF touch | ||
AF continuous | ||
Single AF | ||
AF tracking | ||
Selective AF | ||
Center weighted AF | ||
Multi area AF | ||
AF live view | ||
Face detect focusing | ||
Contract detect focusing | ||
Phase detect focusing | ||
Number of focus points | 9 | 9 |
Lens | ||
Lens mount | fixed lens | fixed lens |
Lens focal range | 25-100mm (4.0x) | 26-105mm (4.0x) |
Maximum aperture | f/2.0-4.9 | f/2.7-5.7 |
Macro focus range | 1cm | 4cm |
Focal length multiplier | 5.8 | 5.8 |
Screen | ||
Display type | Fixed Type | Fixed Type |
Display diagonal | 3 inches | 2.7 inches |
Display resolution | 460 thousand dot | 230 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch display | ||
Display tech | Widescreen TFT color LCD with anti-reflective coating | - |
Viewfinder Information | ||
Viewfinder | None | None |
Features | ||
Minimum shutter speed | 4 secs | 1 secs |
Fastest shutter speed | 1/4000 secs | 1/1600 secs |
Continuous shutter speed | 10.0 frames per second | 1.0 frames per second |
Shutter priority | ||
Aperture priority | ||
Manual exposure | ||
Set WB | ||
Image stabilization | ||
Inbuilt flash | ||
Flash range | 3.40 m | 4.80 m |
Flash modes | Auto, On, Off, Red-eye, Soft | Auto, On, Off, Slow syncro |
External flash | ||
AEB | ||
WB bracketing | ||
Exposure | ||
Multisegment exposure | ||
Average exposure | ||
Spot exposure | ||
Partial exposure | ||
AF area exposure | ||
Center weighted exposure | ||
Video features | ||
Video resolutions | 1920 x 1080 (30 fps), 1280 x 720 (60, 30 fps) | 640 x 480 (30 fps), 320 x 240 (30 fps) |
Maximum video resolution | 1920x1080 | 640x480 |
Video format | MPEG-4, H.264 | Motion JPEG |
Microphone input | ||
Headphone input | ||
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 | ||
Environmental seal | ||
Water proof | ||
Dust proof | ||
Shock proof | ||
Crush proof | ||
Freeze proof | ||
Weight | 230 grams (0.51 lbs) | 117 grams (0.26 lbs) |
Physical dimensions | 124 x 64 x 33mm (4.9" x 2.5" x 1.3") | 93 x 52 x 17mm (3.7" x 2.0" x 0.7") |
DXO scores | ||
DXO Overall 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 life | 240 images | - |
Style of battery | Battery Pack | - |
Battery model | D-LI92 | NP-BN1 |
Self timer | Yes (2 or 10 sec) | Yes (2 sec or 10 sec) |
Time lapse shooting | ||
Type of storage | SD/SDHC/SDXC card, Internal | SD/SDHC, Memory Stick Duo / Pro Duo / Pro HG-Duo, Internal |
Storage slots | Single | Single |
Retail pricing | $300 | $269 |