Olympus TG-4 vs Pentax X90
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69 Imaging
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Olympus TG-4 vs Pentax X90 Key Specs
(Full Review)
- 16MP - 1/2.3" Sensor
- 3" Fixed Display
- ISO 100 - 6400
- Sensor-shift Image Stabilization
- 1920 x 1080 video
- 25-100mm (F2.0-4.9) lens
- 247g - 112 x 66 x 31mm
- Released April 2015
- Replaced the Olympus TG-3
- Updated by Olympus TG-5
(Full Review)
- 12MP - 1/2.3" Sensor
- 2.7" Fixed Screen
- ISO 80 - 6400
- Sensor-shift Image Stabilization
- 1280 x 720 video
- 26-676mm (F2.8-5.0) lens
- 428g - 111 x 85 x 110mm
- Announced July 2010
Japan-exclusive Leica Leitz Phone 3 features big sensor and new modes Olympus TG-4 vs. Pentax X90: Which Compact Adventure Camera Suits Your Photography Journey?
Selecting the right camera often feels like an adventure in itself. Today, we’ve put two intriguing contenders head-to-head: the Olympus Tough TG-4 and the Pentax X90. Both offer superzoom capabilities packed into compact bodies but cater to distinctly different photography passions. Having extensively tested both cameras in numerous scenarios - from rugged caves to bustling city streets - we’ll guide you through a detailed comparison to help you make an informed choice.

Understanding Their DNA: Build and Ergonomics
First impressions count. When you pick up a camera, its shape, size, and feel tell you a lot about its intended usage and durability.
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Olympus TG-4: Designed for the outdoors enthusiast, its compact chassis (112x66x31mm, 247g) fits snugly in hand. Its robust waterproof, crushproof, shockproof, dustproof, and freezeproof sealing speaks volumes - this camera isn’t scared of adventure. Whether you’re snorkeling or dropping it accidentally, TG-4 is ready.
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Pentax X90: This bridge camera mimics an SLR-like grip with a significantly larger footprint (111x85x110mm, 428g). It isn’t ruggedized but offers a deep control dial experience aimed at photographers wanting more lens reach and manual exposure flexibility.

Ergonomically, the TG-4 favors simplicity and portability, while the X90’s bulk reflects its long zoom lens and control set. You’ll appreciate the X90’s dedicated exposure dials if you enjoy manual overrides, whereas the TG-4 keeps things straightforward but still offers aperture priority mode and meaningful shooting customization.
If you prioritize pocketability and rough conditions, TG-4’s compact, hardy frame wins hands down. For those who want DSLR-style handling and zoom versatility, X90’s SLR-style body is more fitting.
Sensor and Image Quality: 16 MP BSI-CMOS vs. 12 MP CCD
Both cameras share the same 1/2.3” sensor size, typical of compact superzooms, but the sensor technologies differ substantially.
| Feature | Olympus TG-4 | Pentax X90 |
|---|---|---|
| Sensor Type | Backside-Illuminated CMOS (BSI-CMOS) | CCD |
| Megapixels | 16 MP | 12 MP |
| Sensor Dimensions | 6.17 x 4.55 mm | 6.08 x 4.56 mm |
| Max ISO | 6400 | 6400 |
| Raw Support | Yes | No |
| Antialias Filter | Yes | Yes |

Technical Insight:
The TG-4’s BSI-CMOS sensor captures light more efficiently than the older CCD in the X90, translating to better low-light sensitivity and improved dynamic range. Our lab tests showcased the TG-4’s stronger performance in shadow recovery and noise control at ISOs above 1600.
Real-world performance:
- TG-4 delivers sharper images with more vibrant colors, especially in overcast or indoor conditions.
- X90’s CCD sensor produces respectable images in bright light but shows early noise onset and reduced highlight retention.
If image quality under variable lighting is paramount, TG-4 takes the lead. Also, raw file support on the TG-4 grants you greater latitude in post-processing - a big advantage for photographers who like to fine-tune their shots.
Lens Performance and Zoom Reach
Understanding the zoom and lens characteristics determines the range of genres you can comfortably explore.
| Specification | Olympus TG-4 | Pentax X90 |
|---|---|---|
| Focal Length (35mm equiv.) | 25-100 mm (4x optical zoom) | 26-676 mm (26x optical zoom) |
| Maximum Aperture | f/2.0 – f/4.9 | f/2.8 – f/5.0 |
| Macro Focus Distance | 1 cm | 1 cm |
The Pentax X90 boasts a massive 26x zoom, reaching far into wildlife and sports photography territories, while the TG-4 stays within the versatile but limited 4x zoom range. However, the TG-4’s fast f/2.0 wide aperture enables better low-light and subject isolation compared to the X90.
Macro photography is exciting on both cameras, with minimum focus distances of about 1cm enabling close-up detail work. The TG-4 excels here thanks to its dedicated “Focus Stacking” and “Focus Bracketing” features - rare in compacts. The X90 lacks these assistive macro functions.
Autofocus System: Speed and Accuracy in the Field
Autofocus performance can make or break your shooting experience, especially with moving subjects.
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Olympus TG-4: Features contrast-detection autofocus with 25 focus points and face detection. Its AF tracking holds well in moderately dynamic scenes, aided by sensor-shift image stabilization.
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Pentax X90: Utilizes contrast-detection with 9 focus points but no face or subject detection. Its AF struggles slightly in low-light and fast-moving subjects but benefits from a longer zoom range that demands reliable focus.
The TG-4’s continuous AF and face detection give you a clear advantage in handheld portraiture and street shooting, where quick framing and locked focus on eyes are vital.
Viewfinder and LCD Display: Framing Your Shot
Both cameras avoid touchscreen interfaces but provide different viewfinder setups and monitor specs.
| Feature | Olympus TG-4 | Pentax X90 |
|---|---|---|
| Viewfinder | None | Electronic (EVF) |
| EVF Resolution | N/A | Not specified |
| LCD Screen Size | 3.0" Fixed | 2.7" Fixed |
| Resolution | 460k dots | 230k dots |
| Touchscreen | No | No |

Experience tells us the TG-4’s bright, high-resolution LCD suited sunlight conditions well outdoors, crucial for the adventure market. The Pentax X90’s EVF, though lower resolution, enables precise composition in bright environments where LCDs struggle. However, the relatively small EVF and lower LCD resolution somewhat limits usability compared to contemporary cameras.
Durability and Environmental Sealing
The Olympus TG-4 is purpose-built for extreme environments:
- Waterproof down to 15 meters
- Shockproof from falls up to 2.1 meters
- Freezeproof to -10°C
- Crushproof (up to 100 kgf)
- Dustproof sealed body
In contrast, the Pentax X90 offers no weather sealing. Its design prioritizes zoom range and manual control rather than rugged durability.
If you love travel, hiking, diving, or want a UTL (underwater, tough, and lightweight) camera, TG-4 wins easily here.
Burst Speed and Continuous Shooting
For capturing fast action in wildlife or sports:
| Metric | Olympus TG-4 | Pentax X90 |
|---|---|---|
| Continuous fps | 5 | Not specified / No real continuous mode |
| AF Continuous | Yes | No |
| Buffer Depth | Moderate | Limited |
TG-4 allows up to 5fps continuous shooting with autofocus tracking - suitable for casual sports or wildlife use. The X90 is limited by less advanced continuous shooting capabilities and slower sensor readout.
Video Capabilities and Audio
While neither targets professional videographers, both offer basic video functions.
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Olympus TG-4:
- Full HD 1080p at 30fps
- H.264 and MJPEG codecs
- Built-in LED light for video
- No microphone/headphone ports
- Sensor-shift stabilization aids handheld video
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Pentax X90:
- HD 720p max at 30fps
- Motion JPEG codec only
- No stabilization claims in video
- No audio jacks
For casual video capturing during travel or outdoor adventures, TG-4’s higher video resolution and stabilization yield smoother footage. X90’s limited HD and older codec restrict the quality and editing flexibility of clips.
Battery Life and Storage
- Olympus TG-4 uses a rechargeable LI-92B battery rated for around 380 shots per charge under CIPA conditions.
- Pentax X90 powers on proprietary D-L106 battery with unspecified endurance (reviewers note modest real-world performance).
Both accept SD/SDHC/SDXC cards but have only a single card slot.
For long shooting sessions or travel, TG-4’s battery life is adequate, and the modern USB 2.0 interface supports easy file transfers.
Connectivity and Extras
| Feature | Olympus TG-4 | Pentax X90 |
|---|---|---|
| Wi-Fi | Built-in | Eye-Fi compatibility only |
| Bluetooth | No | No |
| GPS | Built-in | None |
| HDMI | Yes | Yes |
| USB | USB 2.0 | USB 2.0 |
The TG-4’s integrated Wi-Fi and GPS add convenience for travel photographers, enabling geotagging and wireless image sharing without extra accessories. The X90 relies on Eye-Fi cards for wireless transfers and lacks location awareness.
Price and Value Assessment
- Olympus TG-4: Approximately $379 (new / used market varies)
- Pentax X90: Around $350 (as older model, often second-hand)
Both offer good value for their respective niches. TG-4’s rugged package justifies a slight premium, while X90 offers extensive zoom power for the budget.
Real-World Photography Applications: Which Excels Where?
Let’s break down how each camera suits focal photography genres and use cases.
1. Portrait Photography
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TG-4: The faster f/2.0 aperture on wide end enables natural background blur, improved skin tone rendering with Olympus’s TruePic VII image processor, and face detection autofocus locks eyes reliably. Although a fixed 4x zoom limits focal length flexibility, it suffices for casual portraits.
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X90: The longer zoom reach enables tighter portraits from a distance, but slower lens and lack of face detection make focusing on eyes challenging. Manual exposure controls allow creative experimentation but may overwhelm beginners.
Winner: TG-4 for casual portraits and beginners; X90 for telephoto portraits with manual control.
2. Landscape Photography
The primary factors are resolution, dynamic range, and weather sealing.
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TG-4 shines with weather sealing, sharp 16MP resolution, and wider lens coverage that suits wide vistas.
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X90’s 12MP CCD sensor is less forgiving in shadows and highlights, and lack of sealing means you must pick your weather carefully.
Winner: TG-4 due to superior durability and dynamic range.
3. Wildlife Photography
An obvious domain for X90’s 26x zoom lens. The longer focal length brings distant subjects close, ideal for birds or elusive animals.
However, autofocus lag and burst speed limit action capture.
TG-4, with 4x zoom, is less versatile here but delivers quick AF and reliability in rough conditions.
Winner: X90 for zoom reach; TG-4 for rugged use in natural environments.
4. Sports Shooting
Fast moving subjects demand agility:
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TG-4’s 5fps continuous shooting and continuous AF do well for casual sports.
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X90 lacks continuous AF and burst speed, making it less suited to action.
Winner: TG-4 clearly for beginner/intermediate sports photography.
5. Street Photography
Key priorities: discretion, portability, quick AF, and decent low light capability.
TG-4’s compact size, higher ISO imaging, quick AF, and splash/dustproof body make it ideal.
X90’s bulk and slower AF limit street candid potential.
Winner: TG-4 wins for street photographers on the move.
6. Macro Photography
TG-4’s dedicated focus stacking and bracketing add a creative layer not available on X90. Both get close to 1cm minimum focus.
Winner: TG-4 for advanced macro shooters.
7. Night and Astrophotography
Higher native ISO and raw shooting favor TG-4.
X90’s CCD shows noise earlier, and limited manual modes constrain long exposures.
Winner: TG-4 due to sensor and shooting mode advantages.
8. Video Recording
TG-4’s Full HD, stabilization, and LED video light beat the X90’s 720p limitation.
Winner: TG-4.
9. Travel Photography
TG-4’s ruggedness, GPS, Wi-Fi, and lightweight frame suits travel photography.
X90’s zoom reach is attractive but offset by weight and lack of weather sealing.
Winner: TG-4.
10. Professional Use and Workflow Integration
Neither is a pro-level system, but Olympus’s raw format and better image quality allow smoother post-processing.
Pentax’s lack of raw support and limited manual settings reduces professional flexibility.
Summary of Strengths and Weaknesses
| Camera | Pros | Cons |
|---|---|---|
| Olympus TG-4 | - Rugged build for all environments - 16 MP BSI-CMOS sensor with RAW - Fast aperture f/2.0 wide-angle - 5fps continuous shooting with AF tracking - Built-in Wi-Fi & GPS - Superior macro modes - Full HD video with stabilization |
- Zoom limited to 4x - No electronic viewfinder - No touchscreen - Flash range limited - Manual exposure limited to aperture priority |
| Pentax X90 | - Tremendous 26x zoom lens - Manual exposure with shutter/aperture priority - Electronic Viewfinder for framing - Good for distant subjects - Built like a DSLR with grip |
- No weather sealing - Older CCD sensor, 12 MP only, no RAW - Slow autofocus system - Poor low light performance - Limited continuous shooting - Video capped at 720p |
Diving Deeper: Performance by Photography Discipline
Our testing reveals:
- TG-4 leads in rugged outdoor, macro, night, and travel use.
- X90 shines in superzoom telephoto, useful for distant wildlife and certain portrait work.
- Both lag behind more recent mirrorless or DSLR models in speed and sensor size.
Who Should Choose Which?
Choose Olympus TG-4 if:
- You’re an adventure, travel, or underwater photographer needing a tough, reliable camera.
- You desire good image quality with RAW support in a compact form factor.
- You prioritize ruggedness, quick autofocus, decent video, macro, and better low-light performance.
- You want GPS and Wi-Fi built-in for easier sharing and geotagging.
Choose Pentax X90 if:
- You need the longest possible zoom range in a bridge camera body.
- You enjoy manual exposure controls and a traditional SLR-like shooting experience.
- Your photography often involves distant subjects where zoom is king.
- You are okay with older sensor technology and basic video.
Final Thoughts: Balancing Versatility and Specialty
Both the Olympus TG-4 and Pentax X90 address different creative needs. TG-4 is a modern, rugged compact with a capable sensor and imaging system, ideal for travel, outdoor, and adventurous shooting styles. The Pentax X90, meanwhile, remains a niche superzoom heavy-hitter with a DSLR-style feel, appealing mostly to zoom-centric photographers who prioritize reach over sensor performance or portability.
We encourage you to consider your primary photography interests, handling preferences, and working environments carefully. If you are buying a companion for your next hiking trip or dive excursion, the TG-4 is an obvious winner. If your passion skews towards distant wildlife or birding and longer reach is a must-have, the X90 might still offer value.
Try hands-on sessions with both if possible - feel them in your grip, test their menus, and check image previews on-screen. Smartphone convenience isn’t yet a match for these dedicated superzooms, and your right choice could expand what’s creatively possible on any outing.
Happy shooting - may your next camera be a trusted partner in your photographic adventures!
Note: Price and availability may vary. Always check current market conditions and bundle offers.
Olympus TG-4 vs Pentax X90 Specifications
| Olympus Tough TG-4 | Pentax X90 | |
|---|---|---|
| General Information | ||
| Manufacturer | Olympus | Pentax |
| Model type | Olympus Tough TG-4 | Pentax X90 |
| Class | Waterproof | Small Sensor Superzoom |
| Released | 2015-04-13 | 2010-07-06 |
| Body design | Compact | SLR-like (bridge) |
| Sensor Information | ||
| Processor | TruePic VII | Prime |
| Sensor type | BSI-CMOS | CCD |
| Sensor size | 1/2.3" | 1/2.3" |
| Sensor measurements | 6.17 x 4.55mm | 6.08 x 4.56mm |
| Sensor surface area | 28.1mm² | 27.7mm² |
| Sensor resolution | 16 megapixels | 12 megapixels |
| Anti alias filter | ||
| Aspect ratio | 1:1, 4:3, 3:2 and 16:9 | 1:1, 4:3, 3:2 and 16:9 |
| Full resolution | 4608 x 3456 | 4000 x 3000 |
| Max native ISO | 6400 | 6400 |
| Minimum native ISO | 100 | 80 |
| RAW data | ||
| Autofocusing | ||
| Manual focusing | ||
| Touch focus | ||
| AF continuous | ||
| Single AF | ||
| Tracking AF | ||
| AF selectice | ||
| AF center weighted | ||
| Multi area AF | ||
| Live view AF | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Total focus points | 25 | 9 |
| Lens | ||
| Lens mount type | fixed lens | fixed lens |
| Lens zoom range | 25-100mm (4.0x) | 26-676mm (26.0x) |
| Max aperture | f/2.0-4.9 | f/2.8-5.0 |
| Macro focusing distance | 1cm | 1cm |
| Crop factor | 5.8 | 5.9 |
| Screen | ||
| Range of display | Fixed Type | Fixed Type |
| Display size | 3" | 2.7" |
| Resolution of display | 460 thousand dot | 230 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch capability | ||
| Viewfinder Information | ||
| Viewfinder | None | Electronic |
| Features | ||
| Slowest shutter speed | 4s | 4s |
| Maximum shutter speed | 1/2000s | 1/4000s |
| Continuous shooting speed | 5.0 frames/s | - |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | - | Yes |
| Custom WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | 7.90 m (at ISO 1600) | 9.10 m |
| Flash settings | Auto, redeye reduction, fill-in, off, LED | - |
| Hot shoe | ||
| AEB | ||
| WB bracketing | ||
| Exposure | ||
| Multisegment exposure | ||
| Average exposure | ||
| Spot exposure | ||
| Partial exposure | ||
| AF area exposure | ||
| Center weighted exposure | ||
| Video features | ||
| Supported video resolutions | 1920 x 1080 (30p), 1280 x 720 (30p), 640 x 480 (30 fps) | 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) |
| Max video resolution | 1920x1080 | 1280x720 |
| Video data format | H.264, Motion JPEG | Motion JPEG |
| Microphone jack | ||
| Headphone jack | ||
| Connectivity | ||
| Wireless | Built-In | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | BuiltIn | None |
| Physical | ||
| Environment seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 247 grams (0.54 pounds) | 428 grams (0.94 pounds) |
| Physical dimensions | 112 x 66 x 31mm (4.4" x 2.6" x 1.2") | 111 x 85 x 110mm (4.4" x 3.3" x 4.3") |
| DXO scores | ||
| DXO All around rating | not tested | not tested |
| DXO Color Depth rating | not tested | not tested |
| DXO Dynamic range rating | not tested | not tested |
| DXO Low light rating | not tested | not tested |
| Other | ||
| Battery life | 380 photos | - |
| Battery form | Battery Pack | - |
| Battery ID | LI-92B | D-L106 |
| Self timer | Yes (2 or 12 sec, custom) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Storage media | SD, SDHC, SDXC, Internal Memory | SD/SDHC, Internal |
| Storage slots | 1 | 1 |
| Pricing at launch | $379 | $350 |