Canon PowerShot S100 vs. Pentax Optio WG-2: A Detailed Camera Comparison for Photography Enthusiasts

Choosing the right compact camera is often about balancing features, image quality, and real-world usability. Today, I’m putting under the lens two capable but quite different compact cameras: the Canon PowerShot S100 and the Pentax Optio WG-2. Both were released around the same time but target distinct user types. Through hands-on use and technical benchmarking, I’ll guide you through which camera excels in which photography disciplines, and who should consider either option.

Let’s dive into an expert, yet approachable, breakdown that combines technical rigor with practical insights.

Getting a Feel: Size, Handling, and Ergonomics

Before you capture your first shot, the camera must feel right in your hands.

At first glance, the Canon S100 is notably more compact and refined. Measuring approximately 99 x 60 x 28 mm and weighing 198g including the battery, it fits snugly into pockets and small bags. The Pentax WG-2 is bulkier and chunkier at 122 x 61 x 30 mm, 192g - which is still light but feels more rugged and substantial in hand. This weight-to-size ratio reflects Pentax’s focus on durability and environmental resistance.

Handling wise, the Canon’s controls are tighter and designed for quick manual operation. It boasts dedicated dials for ISO, exposure compensation, and a manual focus ring on its lens - features appreciated by enthusiasts wanting hands-on creative control. The Pentax has simpler controls with no manual exposure modes or dedicated dials, focusing on straightforward operation durable enough for tough conditions.

Top view layouts reveal Canon’s prioritized command dials and clearly marked function buttons. Pentax’s layout is minimalistic, with fewer external controls - this might slow down rapid adjustments but suits casual or rugged outdoor shooting where simplicity matters.

My take: If you want a compact that feels slick and nimble with more direct control, the Canon S100 wins on ergonomics. If you’re after a ruggedized shooter that can take punishment without worrying about external damage, the Pentax WG-2’s chunkier design won’t disappoint.

Sensor Technology and Image Quality: Digging Under the Hood

The heart of image quality lies in sensor size, resolution, and processing. Both cameras use 1/1.7" and 1/2.3" sensors respectively, but how does that play out practically?

• Canon S100: 1/1.7" CMOS sensor – 12MP resolution, DIGIC 5 processor
• Pentax WG-2: 1/2.3" BSI-CMOS sensor – 16MP resolution, no specified processor

Canon’s slightly larger sensor (41.52 mm² vs. 28.07 mm² for Pentax) generally affords better noise control and dynamic range, critical for low-light and high-contrast scenes. The DIGIC 5 engine further boosts image processing, noise reduction, and color fidelity.

Despite the Pentax WG-2’s higher 16MP count, pixel density increases noise, and sensor limitations show under challenging light. Also, Pentax does not offer RAW capture - which is a significant limitation for post-processing flexibility. The Canon shooting RAW is a decisive plus for photographers who like to fine-tune files.

Color depth tests and dynamic range assessments (where Canon scored 20.7-bit color depth and 11.6 EV dynamic range) demonstrate Canon’s sensor delivers richer tonal gradations and better highlight/shadow retention - all contributing to more pleasing images with detail retained in tricky lighting.

Image samples below highlight differences I observed in real-world shooting, especially in scenes with mixed lighting and fine shadow detail.

Canon S100 front Canon S100 screen back Pentax WG 2 front Pentax WG 2 screen back

Canon’s images reveal smoother gradations and finer detail in textures, complemented by accurate white balance consistency. Pentax’s images lean toward punchier saturation but sometimes crush shadows or display more noise.

Summary: Canon S100’s sensor and processing combination delivers superior image quality, especially in low light and for photographers valuing post-production flexibility. The WG-2’s sensor is more entry-level but sufficient for casual shooting, especially outdoors.

Autofocus and Shooting Speed: Capturing the Decisive Moment

For genres like wildlife or sports where timing is crucial, autofocus speed and burst rates matter greatly.

• Canon S100: Contrast-detection AF with 9 focus points and face detection, single shot AF plus tracking AF, continuous shooting up to 2 fps
• Pentax WG-2: Contrast-detection AF with 9 points, face detection, tracking AF, single FPS burst

Both use purely contrast-detect autofocus systems, typical of compacts of their era. The Canon S100’s AF feels snappier and more accurate in varied lighting, benefiting from the DIGIC 5 processor. While 2 fps continuous is not blazing, it’s decent for casual action sequences.

Pentax’s AF tends to hunt more in tricky light and slower to reacquire subjects, with only 1 frame per second continuous shooting - not ideal for fast-moving subjects but adequate for snapshot wildlife or sports moments.

Neither supports phase detection AF or advanced tracking modes we see in DSLRs or mirrorless, so they won’t satisfy serious sports shooters. However, the Canon’s ability to do exposure and shutter priority, plus manual focus, mean more creative control over focus in challenging situations.

Lens and Macro Capabilities: Versatility in Framing and Close-ups

Both cameras sport fixed lenses covering approximately 5x zoom with similar focal length ranges.

• Canon S100: 24-120 mm (35mm equivalent), aperture f/2.0-5.9, macro focus down to 3 cm
• Pentax WG-2: 28-140 mm (35mm equivalent), aperture f/3.5-5.5, macro focus down to 1 cm

Canon’s wider starting focal length and faster maximum aperture of f/2.0 at wide-angle are advantages for low-light and creative depth of field control (shallow bokeh). Pentax’s lens zooms slightly longer, excellent if you desire reach in nature photography.

Macro is where the Pentax surprises: its ability to focus as close as 1 cm gives you impressive magnification for close-up photography, contrasting with Canon’s 3 cm minimum focus distance. However, lack of image stabilization on the Pentax might affect sharpness handheld at this scale.

Canon’s optical image stabilization (OIS) is a significant practical benefit, especially in lower shutter speeds or zoomed shots - reducing the chance of blur without cranking ISO. Pentax’s WG-2 lacks any stabilization, relying on faster shutter speeds or tripods.

So, for macro enthusiasts or anyone prioritizing zoom flexibility outdoors, Pentax delivers practical advantages, but if you want sharper low-light zoom shots or portrait bokeh, Canon’s optics and stabilization shine.

Display and User Interface: How You See and Adjust Your Shots

The viewing experience is valuable for quick framing and reviewing images.

Both cameras feature 3-inch fixed, non-touch LCDs with about 460k dots resolution - perfectly serviceable for composition and playback. Pentax’s WG-2 offers an anti-reflective coating, which helps in bright outdoor conditions; but the Canon’s display is slightly crisper in indoor lighting.

Neither camera includes an electronic viewfinder (EVF), limiting eye-level shooting options. While the Canon’s user interface is more customizable and faster to navigate, Pentax’s straightforward menus lack shutter or aperture priority modes, meaning fewer manual exposure controls.

Canon’s inclusion of manual exposure modes (aperture priority, shutter priority, full manual) provides photographers with greater creative say. Pentax’s more point-and-shoot philosophy suits beginners or users who prefer automation, but may frustrate those wanting finer control.

Build Quality and Environmental Resistance: Ruggedness vs. Elegance

This is perhaps the most critical differentiator. The Pentax WG-2 boasts full environmental sealing with waterproofing, dustproofing, shockproofing, crushproofing, and freezeproofing. It’s rated waterproof to approximately 12 meters - ideal for adventurous photographers who want a camera that withstands swimming, snorkeling, hiking in harsh conditions, or winter sports.

The Canon S100 has no weather sealing or ruggedization, optimized for everyday carry and general use, rather than extreme conditions.

This difference will dramatically influence your choice depending on where your photography adventures take you.

Battery Life and Storage: Ready for a Day of Shooting?

• Canon S100 uses the NB-5L battery with a rated life of approximately 200 shots per charge.
• Pentax WG-2 uses a D-LI92 battery rated for about 260 shots.

Pentax offers slightly better runtime, and has the added advantage of an internal storage buffer in addition to SD/SDHC/SDXC card slots. Canon relies solely on external memory cards.

For longer trips without charging facilities, Pentax’s stamina and onboard storage might be convenient. However, both cameras only offer standard USB 2.0 for data transfer and include HDMI output for quick display on TVs or monitors.

Video Performance: Capturing Motion with Confidence

Both cameras shoot Full HD video at 1080p, but with slightly different frame rates and encoding:

• Canon S100: 1920x1080 at 24 fps, 1280x720 at 30 fps, also high frame rate modes like 640x480 at 120 fps for slow motion. Uses H.264 and Motion JPEG formats.
• Pentax WG-2: 1920x1080 at 30 fps, 1280x720 at 60 fps, MPEG-4 and H.264 codecs.

Pentax’s 720p at 60fps suits smooth slow motion or action sequences. Canon’s inclusion of more video formats and standard cinematic 24 fps gives more artistic options.

Neither camera provides microphone or headphone ports, limiting audio control. Both lack advanced video stabilization, so video capture in motion relies heavily on steady hands or external gimbals.

Connectivity and Extras: Keeping Up With Modern Conveniences

Surprisingly, both cameras support Eye-Fi wireless connectivity - allowing compatible SD cards to send images wirelessly to devices. However, neither offers Bluetooth, NFC, or Wi-Fi hotspots, making modern smartphones integration limited.

Canon’s built-in GPS differs from Pentax’s lack of any positioning system. For travel or nature photographers wanting geo-tagging, Canon holds an advantage here.

Price and Value: Which One Makes More Sense Today?

Currently, Canon S100 models hover around $429, while Pentax WG-2 new or used prices trend at approximately $350.

Given the Canon’s superior sensor performance, image quality, manual controls, and GPS, it justifies the premium for photographers focused on photo quality and creative flexibility.

Pentax packs rugged versatility and macro range at a lower price, catering more to outdoorsy hobbyists and casual shooters needing a tough companion camera rather than the highest image fidelity.

How They Score Across Photography Genres

No evaluation is complete without testing specific styles. Here’s how these cameras rank in key photography disciplines, based on objective performance and my personal experience:

• Portraits: Canon S100 shines with its wider aperture (f/2.0), better skin tone rendition, and face detection AF. Pentax’s slower lens and limited controls struggle here.
• Landscape: Canon’s better dynamic range and resolution edge out, though Pentax’s waterproof suitability makes it appealing for tough outdoor scenes.
• Wildlife: Neither is ideal, but Pentax’s longer zoom and ruggedness help in fieldwork; Canon offers faster AF responsiveness.
• Sports: Both limited by burst rates and AF speed, Canon slightly preferred due to exposure modes.
• Street: Canon’s compactness and discreet design are more street-friendly, though Pentax’s ruggedness matters in rough environments.
• Macro: Pentax’s focus down to 1 cm wins for close macro work over Canon.
• Night/Astro: Canon’s low-light ISO performance is significantly better.
• Video: Pentax’s 60fps HD modes are attractive; Canon’s video codec options provide cinematic colors.
• Travel: Canon’s GPS, size, better battery life balance travel needs, but Pentax’s ruggedness and battery life are tough to beat on adventures.
• Professional: Canon’s RAW support and manual controls make it more suitable for professional dissemination, Pentax serves as a second rugged camera.

Overall Performance Summary

Finally, synthesizing all aspects, here’s a high-level performance comparison:

The Canon PowerShot S100 emerges as the more versatile, imaging-focused compact camera, suited for enthusiasts who value image quality, manual controls, and occasional travel use.

The Pentax Optio WG-2 is a niche champion in rugged, waterproof, and macro-focused shooting scenarios, perfect for casual photographers who prioritize durability and outdoors usage over technical sophistication.

Final Thoughts: Which One Should You Buy?

I’ll leave you with practical recommendations depending on your needs:

• Choose the Canon PowerShot S100 if you:

  • Desire superior image quality and RAW shooting for editing
  • Need manual exposure and focus controls
  • Want a compact camera with GPS and image stabilization
  • Shoot portraits, landscapes, or night scenes regularly
  • Appreciate slightly better video options and smoother AF

• Choose the Pentax Optio WG-2 if you:

  • Require a tough, waterproof camera for adventure, hiking, or underwater shots
  • Want excellent macro ability with very close focusing
  • Need longer zoom reach and slightly longer battery life
  • Prefer simplicity over manual controls
  • Plan to use it in conditions where sensors might get wet or dusty

At the end of the day, both the Canon S100 and Pentax WG-2 have their well-defined niches. Your choice hinges primarily on whether you prioritize imaging flexibility and quality or ruggedness and versatility for rough environments.

Hope this guided tour of these two compact cameras clarifies the strengths and trade-offs. Feel free to reach out with questions or check out my accompanying photo gallery and video reviews for deeper hands-on impressions!

Happy shooting!