Canon PowerShot D20 vs SX620 HS: A Deep Dive into Two Compact Canon Cameras

When it comes to compact Canon cameras, the PowerShot line offers a diverse range, from rugged waterproof models to versatile superzooms. In this detailed hands-on comparison, I put the Canon PowerShot D20 and the Canon PowerShot SX620 HS head to head. Though both share a similar heritage, they distinctly target different users and photography niches. After hours of real-world testing, in various conditions and styles, I’m ready to unpack the nuanced technical differences and practical use cases that separate these two models.

Whether you're an outdoor adventurer in need of a durable rig or a casual zoom enthusiast craving compact reach, this comparison will help you navigate the subtle pros, cons, and who each camera truly suits.

First Impressions: Size, Build, and Layout

At first glance, both cameras are compact but designed with quite different priorities. The D20 emphasizes ruggedness and resilience, while the SX620 HS promotes zoom flexibility and lightweight portability.

Canon PowerShot D20:
The D20’s body is chunky for a compact, with pronounced rubberized grips and environmental sealing (waterproof, dustproof, shockproof, freezeproof). Measuring 112x71x28mm and weighing 228g, it exudes durability and a go-anywhere vibe. It’s clearly built to withstand harsh environments - I took it snorkeling and it handled immersion up to 10m without fuss. The camera’s heft and grip ergonomics feel reassuringly sturdy, but the tradeoff is a less pocketable profile.

Canon PowerShot SX620 HS:
Conversely, the SX620 HS is a sleek, pocket-friendly superzoom compact at 97x57x28mm and only 182g. Its slim profile and smooth contours make it ideal for carrying at all times - a great everyday travel companion. However, this sleekness comes at the cost of durability. There’s no weather sealing or shock resistance, so you’ll want to keep it protected from rough use and inclement weather.

Touching on Control and Interface: Usability at a Glance

While both cameras lack touchscreens, their control schemes differ subtly. The D20 opts for a rugged, minimalistic approach, while the SX620 HS integrates more standard compact camera controls.

The D20’s buttons are robust and tactile with a simple menu system, designed to be used even with wet hands or gloves - a must for underwater or cold weather use. Its fixed 3-inch 461k-dot PureColor II TFT LCD, although lower-res, is perfectly readable even under bright sunlight reflections on water or snow. There’s no viewfinder on either unit.

The SX620 HS, meanwhile, sports a sharper 3-inch 922k-dot LCD - making image review and manual focusing easier. It feels more like a traditional point-and-shoot in this regard. The zoom lever around the shutter button is smooth and responsive, enabling effortless framing zoomed in up to an impressive 625mm equivalent.

Sensor, Image Quality, and Processing

Let’s talk about the heart of any camera - the sensor and image processing. Both cameras use sensors of the same physical size (1/2.3"), but Canon upgraded the SX620 HS with a newer 20MP BSI CMOS sensor and DIGIC 4+ processor, compared to the D20’s 12MP CMOS sensor and DIGIC 4 processor.

Resolution and Detail

The SX620 HS’s 20MP sensor naturally delivers higher resolution raw images (up to 5184x3888 pixels versus 4000x3000). In real-world shooting, this translates into more cropping flexibility and greater detail under good lighting. Landscapes and detailed macro shots particularly benefit - the extra pixels matter when making large prints or extensive zoom-ins.

Conversely, the D20’s 12MP resolution suffices for typical domestic prints and online sharing, but detail starts to fall off if you heavily crop. However, the D20’s sensor, paired with its optical image stabilization, still delivers vibrant images underwater and in challenging light due to its rugged design focus.

Noise and Low-Light Performance

The D20 has a maximum ISO of 3200, but image noise above ISO 800 is significant. The SX620 HS, with its newer back-illuminated sensor, offers visibly cleaner images at higher ISO settings - making it more capable in low-light scenarios such as dim interiors or dusk street shots.

While neither camera is revolutionary in noise control by current standards, the SX620 HS is the clear winner for noise-sensitive shooting, which is handy for travel and street photography where lighting varies.

Autofocus: Speed, Accuracy, and Focus Modes

Autofocus is often a decisive factor when photographing fast-changing scenes, like wildlife or sports.

Both cameras have contrast-detection AF with 9 focus points, but the SX620 HS boasts improved features:

• Continuous AF and Face Detection with AF tracking enabled
• Selective spot AF and multi-area AF modes
• Slightly faster AF acquisition in live view due to updated processing

The D20, while featuring face detection and center-weighted AF, lacks AF tracking and selective focus options. This limits its effectiveness for capturing moving subjects, making it better suited to relatively static shots like landscapes or underwater scenes where movement is slower.

From my testing, the SX620 HS locks focus faster and maintains more reliable tracking on erratic subjects (e.g., birds in flight or children playing). The D20 can handle some continuous AF but is noticeably slower and more prone to hunting - understandable given its rugged, older design focus.

Lens and Zoom: Reach and Flexibility

Lens characteristics are paramount for photographers with specific framing needs.

The PowerShot D20 features a 28–140mm equivalent (5x zoom) and a relatively bright aperture range of f/3.9–4.8. This range is modest but sufficient for general shooting, particularly wide-angle landscapes and moderately distant subjects. Its macro mode focusses as close as 1cm, excellent for underwater flora and fauna close-ups.

The SX620 HS jumps to a massive 25–625mm equivalent (25x zoom), allowing photographers to shoot extreme telephoto images while still carrying a compact camera. The aperture range narrows to f/3.2–6.6, making brightness notably lower in full zoom but an expected tradeoff for the reach.

This lens versatility makes the SX620 a standout choice for wildlife shots from a distance, urban street photography capturing candid moments discreetly from afar, and travel photography where you want a “do it all” camera without changing lenses.

Durability and Environmental Sealing

This is where the D20’s rugged build really shows its value. It is waterproof up to 10m, dustproof, shockproof, and freezeproof - a combination that makes it an exceptional choice for adventure photography.

If you’re hiking in harsh conditions, snorkelling, skiing, or simply want a camera you don’t need to baby in risky outdoor environments, the D20 wins hands down.

The SX620 HS is not weather-sealed, so exposure to water, dust, or drops should be avoided. This camera is best for controlled or everyday urban environments.

Handling and Ergonomics

Ergonomics make a big difference when shooting for long periods.

The D20’s grippy rubberized body feels substantial and secure. However, the button layout and interface feel utilitarian without many advanced exposure mode options (no shutter or aperture priority, no manual exposure). This limits creative control but also simplifies operation for rugged outings.

The SX620 HS is slimmer, with conventional button placement. Its 3" high-res screen aids fine framing and manual focus confirmation. However, its smaller body can feel less stable for prolonged telephoto shooting without a tripod.

Neither camera offers viewfinders or touchscreen interfaces - a minor inconvenience but common for budget compact cameras.

Image Stabilization and Maximum Shutter Speeds

Both models include optical image stabilization, an invaluable tool when shooting handheld, especially at telephoto focal lengths.

The SX620 HS, with its long zoom reach, benefits most from effective stabilization - enabling relatively shake-free shots even at 625mm equivalent focal length. The D20’s stabilization is helpful underwater and in low light but less critical given its moderate zoom.

Both cameras have a minimum shutter speed of 15 seconds for creative exposure, but the SX620 HS extends max shutter speed to 1/2000s (vs 1/1600s on D20), offering slightly more flexibility for bright conditions or fast action.

Video Recording Capabilities

Video is a common use today, so let’s look at how these cameras stack up.

• Canon D20 shoots Full HD 1080p at 24 fps, plus various slow motion modes up to 240fps at lower resolutions.
• SX620 HS also records 1080p but at a smoother 30 fps and supports MPEG-4 in addition to H.264.

Neither camera offers 4K video or microphone/headphone ports, limiting professional video utility. Yet, for casual video, both perform similarly - the SX620 HS edges out slightly with smoother frame rates and more codec flexibility.

Neither has built-in headphones or external mic connections - a limitation for serious videographers.

Connectivity and Storage

Connectivity-wise:

• The D20 supports Eye-Fi card wireless, enabling some wireless image transfer, plus built-in GPS - handy for geotagging adventure images.
• The SX620 HS has built-in Wi-Fi and NFC for easy pairing with smartphones, but lacks GPS.

Storage on both is via a single SD/SDHC/SDXC card slot, standard for compacts.

Battery life favors the SX620 HS with 295 shots per charge (CIPA rating), reflecting newer battery efficiency. The D20’s battery life isn’t specified but tends to be less impressive due to its rugged features and older design.

Real-World Shooting Use Cases and Sample Images

To bring these specs to life, I shot a variety of scenes with both cameras - portraits outdoors, street scenes in low light, telephoto wildlife test, underwater macro, and landscape vistas.

Canon D20 front Canon D20 screen back Canon SX620 HS front Canon SX620 HS screen back

• Portraits taken with the D20 look vibrant with excellent color rendition, especially underwater and skin tones remain pleasing though there is less detail due to 12MP resolution.
• The SX620 HS portraits benefit from sharper details and cleaner background blur at wider apertures but sometimes show slightly more noise in shadows.
• Wildlife shots at full zoom on the SX620 HS prove the zoom advantage, enabling close framing without disturbing subjects.
• The D20’s macro underwater shots are impressive for snagging crisp close-ups of aquatic subjects.
• Landscapes demonstrate the SX620’s detail advantage thanks to higher resolution, while the D20 offers strong color fidelity and sunlight readability.
• Both handle street scenes reasonably well but the SX620’s zoom allows for more discreet, long-distance captures.

Performance Ratings and Genre-Specific Suitability

Having rigorously tested both cameras, here is a consolidated overview of their strengths and who they’re best for.

Final Thoughts and Recommendations

• Choose the Canon PowerShot D20 if:
  You prioritize ruggedness and environmental sealing for adventure, underwater, or harsh climate photography. It’s a go-anywhere camera that lets you shoot confidently in water, snow, or dusty trails. While detail and zoom are limited, the robust build and straightforward controls make it highly reliable for outdoor enthusiasts and snorkelers.

• Choose the Canon PowerShot SX620 HS if:
  You want a lightweight, pocketable camera with a massive zoom range and better image quality for travel, street, wildlife, and casual telephoto shooting. Its sharper sensor, Wi-Fi/NFC connectivity, and improved autofocus make it a flexible all-rounder in everyday scenarios. However, be mindful that it’s not ruggedized and needs gentle care.

My Testing Methodology and Trust in this Review

In preparing this comparison, I conducted side-by-side testing under diverse conditions - indoors, outdoors, bright sunlight, shade, underwater snorkeling, and in city streets at night. I evaluated autofocus speed with moving subjects, tested stabilizer effectiveness handheld at various zoom levels, and sat through at least 30 photo reviews per category to assess noise, detail, and color consistency.

When possible, I consulted the latest industry standards for metrics like shutter speed response and ISO performance and correlated them with field usage impressions. This review balances technical data with experiential insights, ensuring you receive an honest and comprehensive assessment.

Closing Summary

Both the Canon PowerShot D20 and SX620 HS excel in their respective niches. The D20 is an indestructible companion for rugged lifestyle photographers, while the SX620 HS appeals to image quality enthusiasts chasing zoom reach and portability. Choosing between these two depends largely on your lifestyle and shooting priorities. For adventure and harsh conditions, the D20 is unmatched in its class. For versatile, everyday shooting with a telescopic advantage, the SX620 HS is the smarter pick.

In the ever-evolving compact camera landscape, these two models represent thoughtful, purpose-built options that deliver excellent value for modest budgets, each with Canon’s reliable imaging heritage behind them.

Happy shooting - whatever your next photographic adventure may be!