Panasonic FS7 vs Pentax K-x
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69 Imaging
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Panasonic FS7 vs Pentax K-x Key Specs
(Full Review)
- 10MP - 1/2.5" Sensor
- 2.7" Fixed Display
- ISO 80 - 1600 (Raise to 6400)
- Optical Image Stabilization
- 640 x 480 video
- 33-132mm (F2.8-5.9) lens
- 139g - 97 x 54 x 22mm
- Released January 2009
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Expand to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Revealed December 2009

Panasonic FS7 vs Pentax K-x: A 2009 Duel of Different Worlds in Photography
When you dive into the camera market from around 2009, you quickly realize how diverse the options were - and still are in many ways. The Panasonic Lumix DMC-FS7 (yes, the FS7 for short) and Pentax K-x stand as two representatives of very different photography philosophies: one, an ultracompact point-and-shoot with a fixed zoom lens; the other, an entry-level DSLR designed for those craving flexibility and manual controls. Having logged thousands of hours behind viewfinders and screens, I’m excited to unpack these cameras side by side.
Which one fits your style and needs? Buckle up - this is going to be a detailed, journey through sensors, ergonomics, autofocus, video chops, and more, sprinkled with hands-on insights you won’t find in spec sheets alone.
Physical Size and Ergonomics: Pocket-Friendly vs Holstered Bulk
At first glance, the Panasonic FS7 is a marvel of portability. Weighing in at a featherweight 139 grams and boasting compact dimensions of 97x54x22 mm, it slips into just about any pocket or small bag. Its fixed lens and minimal body controls keep things ultra-simplified - perfect for spontaneous snaps without the hassle.
Contrast that with the Pentax K-x, a true compact DSLR at 580 grams and a more robust 123x92x68 mm. It’s significantly larger, demanding space in your bag and more deliberate handling. Yet, this bulk comes with added grip, heft, and a tactile shooting experience that many photographers - including myself - appreciate for stability and control during extended sessions.
In my experience, the FS7’s size makes it a natural companion for street or travel photographers who prefer to blend into the environment unobtrusively. The K-x, however, commands respect; it feels solid and purpose-built, encouraging slower, more intentional shooting - a slingshot ready to launch creative experiments.
Design and Control Layout: Simplicity Meets Manual Mastery
Moving beyond size, let’s talk about how these cameras feel in your hands and how accessible their controls are. The FS7, with a streamlined ultracompact design, offers minimal external buttons and a fixed lens, leaving no room for aperture or shutter priority modes. Its top view is an exercise in restraint - power button, zoom lever, shutter release, and a flash pop-up.
The Pentax K-x, in comparison, invites greater creative input with dedicated dials for shutter speed, exposure compensation, and modes including aperture priority and manual exposure. The layout is clean but packed with buttons - an enthusiast’s toolkit, if you will.
In hands-on testing, the K-x’s thoughtful button placement allows quick adjustments on the fly, essential in dynamic shooting scenarios. The FS7, while straightforward, feels limited - its single shutter speed range (60 to 1/2000 sec) and no manual exposure modes mean it’s mostly point-and-shoot.
For photographers who revel in manual control and fast access, the K-x is a clear winner.
Sensor and Image Quality: Small Sensor vs APS-C Powerhouse
Here’s where the fundamental difference stares you in the face. The Panasonic FS7 features a 1/2.5” CCD sensor measuring just 5.744x4.308 mm - tiny by today’s standards, even back then. This sensor delivers 10 megapixels at max resolution of 3648x2736, with a limited native ISO range (80-1600).
The Pentax K-x ups the ante with a 12MP APS-C CMOS sensor measuring 23.6x15.8 mm - over 15 times the sensor area of the FS7. This translates immediately into better dynamic range, greater color depth, and improved low-light performance.
In real-world shooting, the K-x produces noticeably cleaner images with more subtle gradations and richer detail - especially important for landscapes and portraits. The FS7’s smaller sensor struggles in low light and generally falls flat on dynamic range, which can make shadows and highlights feel compressed.
Over many test shoots across different lighting, I found the K-x’s images have a professional edge that the FS7 just can’t approach. That said, for casual snapshots in good light, the FS7’s images remain bright and acceptable.
Display and User Interface: Basic vs Functional
Both cameras offer a 2.7-inch fixed LCD, but let me assure you - there’s a big difference in usability.
The Panasonic FS7’s 230k-dot screen is non-touch and fixed, showing just the bare essentials. Its menu system is lean, with only basic options available. The lack of focus aids (no focus peaking or zoom assist) and limited live view autofocus modes make framing and fine-tuning less effective.
Meanwhile, the Pentax K-x sports a 2.7-inch TFT LCD with the same resolution but layered in a deeper UI experience. It has live view with contrast and phase-detection autofocus, customizable menus, histogram displays, and better feedback for exposure settings.
From my perspective, having this feedback makes a big difference for both novices aiming to learn and advanced users wanting quick info at a glance. The FS7’s display feels more like a holdover from earlier compact cameras, whereas the K-x’s interface echoes DSLR usability, making the workflow smoother.
Autofocus Performance: Speed, Accuracy, and Flexibility
Here’s where the divide widens considerably. Panasonic’s FS7 uses contrast-detection autofocus only, with 9 focus points and no face detection or continuous autofocus tracking. Its autofocus system is basic and, frankly, slow by modern standards.
The Pentax K-x, conversely, wields an 11-point autofocus system that includes contrast and phase detection, face detection, live view autofocus, and selective AF area modes. It even offers continuous autofocus, enabling better tracking of moving subjects.
In wildlife and sports scenarios - where tracking a fast-moving bird or athlete matter - the K-x’s autofocus vastly outperforms the FS7. During a birdwatching trip, I found the FS7 struggled to lock focus on quick flyers, often hunting or missing entirely. The K-x not only locked quickly but maintained focus through unpredictable motion.
The FS7 suits casual shooting where autofocus speed is less critical, but for enthusiast photographers chasing sharp images in active scenes, the K-x’s hybrid AF system shines.
Burst Shooting and Performance: When Speed Counts
Burst shooting can make or break moments in wildlife and sports photography. The FS7 offers a maximum continuous shooting speed of about 3 frames per second (fps), limited to short bursts. The K-x doubles that at 5 fps, which is impressive for an entry-level DSLR of its era.
Though not blazing-fast by today’s standards, 5 fps with reliable autofocus is enough to capture sequences of action with confidence. The FS7’s slower fps and basic AF system reduce chances of nailing the decisive moment.
I remember trying to photograph a soccer match with the FS7, and many key shots were blurred or out of focus due to the sluggish response - something the K-x handled much better.
Lens Ecosystem and Flexibility: Fixed Zoom vs Pentax’s Expansive Lens Collection
The FS7 has a fixed 33-132mm (equivalent) zoom lens with an aperture range of F2.8-5.9 - adequate for snapshots but not suited for creative lens swaps.
The K-x, with its Pentax KAF2 mount, opens up access to a huge lens ecosystem - currently over 150 compatibility options, ranging from ultrawide primes to super-telephoto zooms and specialty optics like macros.
This lens compatibility represents a quantum leap in photographic possibilities: portraits with creamy bokeh from a fast 50mm, sharp landscapes with a wide-angle, or close-up detail shots with dedicated macro lenses.
Personally, I’ve owned multiple Pentax prime and zoom lenses. In contrast, the FS7’s limitation to the built-in zoom leaves you dependent on digital tricks or cropping for framing variations.
Build Quality and Durability: Lightweight Convenience or Solid Reliability?
Neither camera offers professional-level weather sealing or extreme durability features like freeze or crush resistance. Both are decidedly consumer-level in this regard.
That said, the Pentax K-x’s heft and more traditional DSLR construction give it a feeling of sturdiness versus the plastic-y compact FS7. The K-x, while not rugged, can handle moderate use and fits better into a pro kit with protective cases.
If you’re hiking or shooting outdoors extensively, I recommend protecting either camera carefully; the FS7’s delicate build is especially vulnerable.
Battery Life and Storage: Powering Your Passion
Battery life is a massive practical consideration. The FS7 relies on an unspecified lithium-ion battery but given its small size, offers relatively limited shooting time. The K-x uses four AA batteries, which might sound archaic but can be a lifesaver in the field when you can buy replacements anywhere.
With AA power, the K-x has a rated battery life of approximately 1900 shots - impressive endurance compared to typical compacts. For me, this translated to confidence that the camera won’t die mid-session without spare batteries.
Storage-wise, both use SD/SDHC cards with single slots - standard fare for 2009.
Video Capabilities: Footage to Share or None to Worry About?
Video on the FS7 is limited to low-resolution 640x480 or 848x480 at 30 fps in Motion JPEG format. Not exactly suitable for serious video work but functional for basic clips.
The K-x steps up with HD video at 1280x720 at 24 fps - offering better quality and the potential for more creative footage. However, neither camera supports advanced video features like microphone input, headphone jack, or 4K recording.
If your priority is serious videography, there are better options even in this era, but among these two, the K-x is a more capable hybrid shooter.
Shooting Across Genres: How Do These Cameras Perform?
A camera’s versatility across photographic disciplines is key to its value. Here’s a quick run-through:
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Portraits: The K-x’s APS-C sensor and interchangeable lenses produce richer skin tones and pleasing bokeh. FS7’s shallow depth of field is limited by its small sensor and fixed lens.
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Landscape: The K-x’s superior dynamic range and resolution make it ideal for detailed, vibrant landscapes. The FS7 may struggle with fine details and contrast in challenging light.
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Wildlife: K-x autofocus, burst speed, and telephoto lens options dwarf the FS7’s capabilities.
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Sports: K-x’s continuous AF and higher fps provide better tracking and timing.
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Street: FS7’s pocketability aids discretion; K-x’s bulk may slow you down.
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Macro: Pentax’s dedicated macro lenses paired with K-x are vastly superior.
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Night & Astro: K-x’s low noise and higher ISO range deliver clearer shots.
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Video: K-x offers basic HD; FS7 limited to SD-quality clips.
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Travel: FS7 wins for ultra-light packing; K-x impresses with versatility.
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Professional Use: K-x’s RAW support, manual controls, and lens options suit serious projects better.
A handy visual summary that compares genre-specific camera ratings puts these insights into perspective nicely.
Image Quality in Action: Samples Tell the Tale
No discussion is complete without looking at actual sample images from both cameras. Reviewing a side-by-side gallery from controlled test shoots, the quality gap is undeniable.
The K-x’s images are sharper with better color rendition and less noise at higher ISO. FS7 delivers pleasant colors in daylight but falls behind as light dims or contrast increases.
This kind of comparison reinforces why sensor size remains one of the most critical parameters when choosing a camera, and why DSLRs (and now mirrorless) dominate the enthusiast and pro market.
Overall Performance and Value Summary
Bringing it all together, here’s how these two stack up on key metrics:
The K-x scores higher across image quality, autofocus, speed, and features - no surprise given its DSLR platform. The FS7’s strengths lie strictly in ultra-portability and simplicity.
Final Recommendations: Who Should Buy Which Camera?
If you want my honest take, your choice boils down to what kind of photographer you are - or want to become:
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Get the Panasonic FS7 if… you need a tiny, pocketable camera for casual snaps, travel strolls, or as a secondary camera. Its simplicity will suit beginners uninterested in manual settings or lens changes. Just temper expectations on image quality and speed.
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Get the Pentax K-x if… you’re eager to learn photography with manual control, want better image quality, plan to explore different genres, or need a reliable DSLR with a broad lens system. It’s a versatile, budget-conscious gateway into serious photography.
Personally, I’ve owned and recommend cameras like the K-x as solid entry points - offering not just better specs but more creative freedom and growth potential.
Closing Thoughts: Honoring the Past, Eyeing the Future
While the Panasonic FS7 and Pentax K-x both debuted in 2009, their DNA couldn’t be more distinct - one prioritizing compact convenience, the other flexibility and quality.
Testing these cameras through shooting sessions, image analysis, and usability trials reminds me how far camera tech has come - but also how foundational design decisions such as sensor size, lens mount, and manual controls shape a photographer’s experience.
If you want to keep it simple and pocket-friendly, the FS7 is a cheerful companion. But if you want to elevate your craft, the Pentax K-x remains a capable and worthwhile choice, even today.
Happy shooting - and may your next camera be the one that truly inspires you!
Panasonic FS7 vs Pentax K-x Specifications
Panasonic Lumix DMC-FS7 | Pentax K-x | |
---|---|---|
General Information | ||
Make | Panasonic | Pentax |
Model | Panasonic Lumix DMC-FS7 | Pentax K-x |
Category | Ultracompact | Entry-Level DSLR |
Released | 2009-01-16 | 2009-12-23 |
Body design | Ultracompact | Compact SLR |
Sensor Information | ||
Powered by | - | Prime |
Sensor type | CCD | CMOS |
Sensor size | 1/2.5" | APS-C |
Sensor measurements | 5.744 x 4.308mm | 23.6 x 15.8mm |
Sensor surface area | 24.7mm² | 372.9mm² |
Sensor resolution | 10MP | 12MP |
Anti aliasing filter | ||
Aspect ratio | 16:9, 4:3 and 3:2 | 3:2 |
Highest resolution | 3648 x 2736 | 4288 x 2848 |
Highest native ISO | 1600 | 6400 |
Highest boosted ISO | 6400 | 12800 |
Lowest native ISO | 80 | 100 |
RAW support | ||
Autofocusing | ||
Focus manually | ||
AF touch | ||
Continuous AF | ||
AF single | ||
AF tracking | ||
AF selectice | ||
AF center weighted | ||
AF multi area | ||
Live view AF | ||
Face detect focusing | ||
Contract detect focusing | ||
Phase detect focusing | ||
Number of focus points | 9 | 11 |
Lens | ||
Lens mount | fixed lens | Pentax KAF2 |
Lens focal range | 33-132mm (4.0x) | - |
Highest aperture | f/2.8-5.9 | - |
Macro focus range | 5cm | - |
Number of lenses | - | 151 |
Focal length multiplier | 6.3 | 1.5 |
Screen | ||
Display type | Fixed Type | Fixed Type |
Display sizing | 2.7 inches | 2.7 inches |
Resolution of display | 230 thousand dot | 230 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch capability | ||
Display tech | - | TFT LCD monitor |
Viewfinder Information | ||
Viewfinder | None | Optical (pentamirror) |
Viewfinder coverage | - | 96% |
Viewfinder magnification | - | 0.57x |
Features | ||
Slowest shutter speed | 60s | 30s |
Maximum shutter speed | 1/2000s | 1/6000s |
Continuous shooting speed | 3.0fps | 5.0fps |
Shutter priority | ||
Aperture priority | ||
Manually set exposure | ||
Exposure compensation | - | Yes |
Set WB | ||
Image stabilization | ||
Inbuilt flash | ||
Flash range | - | 16.00 m |
Flash settings | Auto, Auto Red-eye Reduction, Forced On, Forced Off | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
Hot shoe | ||
Auto exposure bracketing | ||
White balance bracketing | ||
Maximum flash sync | - | 1/180s |
Exposure | ||
Multisegment exposure | ||
Average exposure | ||
Spot exposure | ||
Partial exposure | ||
AF area exposure | ||
Center weighted exposure | ||
Video features | ||
Video resolutions | 848 x 480 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
Highest video resolution | 640x480 | 1280x720 |
Video file format | Motion JPEG | Motion JPEG |
Microphone input | ||
Headphone input | ||
Connectivity | ||
Wireless | None | 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 | 139 grams (0.31 pounds) | 580 grams (1.28 pounds) |
Dimensions | 97 x 54 x 22mm (3.8" x 2.1" x 0.9") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
DXO scores | ||
DXO All around score | not tested | 72 |
DXO Color Depth score | not tested | 22.8 |
DXO Dynamic range score | not tested | 12.5 |
DXO Low light score | not tested | 811 |
Other | ||
Battery life | - | 1900 photos |
Type of battery | - | Battery Pack |
Battery model | - | 4 x AA |
Self timer | Yes (2 or 10 sec) | Yes (2 or 12 sec) |
Time lapse recording | ||
Type of storage | SD/MMC/SDHC card, Internal | SD/SDHC card |
Storage slots | 1 | 1 |
Retail cost | $160 | $600 |