Canon PowerShot SX710 HS vs Sigma DP2: A Deep Dive into Two Unique Compact Cameras

When photographers pick up a camera, they often look for a mix of versatility, image quality, and handling that fits their creative workflow. Here, we pit two very different approaches to compact photography head-to-head: the Canon PowerShot SX710 HS, a small sensor superzoom compact aimed at travel and casual enthusiasts, versus the Sigma DP2, a large sensor, fixed-lens compact that champions image quality in a minimalist package. With over 15 years and thousands of cameras under my belt, I approached this comparison by dissecting their technical architecture, testing performance in real-world scenarios, and evaluating their usability for all major photography genres. Let’s explore what these cameras bring to the table - and who they’re truly for.

Compact vs Large Sensor: Understanding the Core Foundations

At the heart of the image quality discussion is the sensor technology, size, and resolution. The Canon SX710 HS uses a 1/2.3-inch BSI-CMOS sensor sized 6.17 x 4.55 mm, sporting a 20-megapixel resolution. This class of sensor is typically found in superzoom compacts and smartphones, designed to pack many pixels into a very small surface area.

In contrast, the Sigma DP2 rocks a much larger APS-C sized CMOS sensor (Foveon X3 technology) measuring 20.7 x 13.8 mm, but with an effective resolution closer to 5 megapixels in terms of pixel count. The Foveon sensor operates on a unique principle: it captures full-color data at each pixel by stacking photodiodes, rather than using a Bayer filter array. This makes it stand out for color fidelity, but it also impacts the resolution number and shooting speed.

Here’s a visual to put that in context:

From a practical perspective, the larger and more sophisticated sensor inside the Sigma offers better control over depth of field, low-light capability, and dynamic range compared to the Canon's smaller sensor, which favors zoom reach and speed.

Handling and Ergonomics: Which Feels Better in Your Hands?

Carrying a camera around should feel natural and comfortable; you shouldn’t feel like you’re wrestling a tool. The Canon SX710 HS is a slim, lightweight compact that fits in the palm easily, weighing just 269g and measuring 113 x 66 x 35 mm. The Sigma DP2, by contrast, is chunkier - 113 x 60 x 56 mm - and slightly heavier at 280g, with a boxy retro design that favors grip but loses portability.

Take a look at the size-and-shape contrast here:

The Canon offers a contoured body with a modest grip and a well-laid-out button set. The Sigma has a more solid, rectangular chassis but fewer external controls. It feels more like carrying a precision scientific instrument than a camera meant for casual use.

Control Layout and User Interface: Intuitive vs Minimal

Examining the top plate reveals how each brand approaches direct control:

The SX710 HS, true to Canon’s tradition, provides dedicated dials for modes, exposure compensation, and zoom control, making on-the-fly adjustments easier. Its buttons are logically placed, though small.

The Sigma DP2 skips fancy mode dials and relies heavily on menus. It has minimal physical controls, reflecting Sigma’s emphasis on precision over quick adjustments. The lack of autofocus tracking or multiple AF points means you must be deliberate with focus.

From a usability standpoint, Canon’s SX710 HS is friendlier for photographers who want responsive control without diving into menus. Sigma’s DP2 suits those who prefer a contemplative shooting style, focusing on single-frame contemplations.

LCD and Viewfinder: How You Frame the Shot

Neither camera features an electronic viewfinder (EVF), which is a disadvantage for shooting in bright outdoor light. Both rely on their rear LCD screens for composition.

The Canon offers a moderately sized 3" fixed LCD with 922k-dot resolution - reasonably sharp and functional with a good viewing angle. The Sigma DP2’s screen is smaller at 2.5" with only 230k-dot resolution, which tends to be dimmer and less detailed.

Here’s a direct comparison:

For critical focus and review, the Canon’s screen is more comfortable - especially in bright conditions. The Sigma’s screen is more utilitarian and less detailed, which can make manual focus via live view trickier.

Lens and Zoom: Reach Versus Optics

This is where these cameras differ dramatically.

• Canon SX710 HS: Fixed 25-750 mm equivalent zoom (30x optical zoom) with an aperture range from F3.2 at wide-angle to F6.9 at telephoto. This makes it extremely versatile for travel, wildlife at a distance, street candid shots, and even landscapes.

• Sigma DP2: Fixed 41 mm equivalent prime lens (Foveon sensor 1.7x crop factor). Aperture details are limited, but it offers a standard field of view akin to a 50mm lens on full-frame, favored for portraits, general walk-around, and street photography.

Because the DP2 has a fixed prime, you’re locked into one focal length - encouraging deliberate framing and composition. The Canon’s broad zoom offers flexibility but with the usual small-sensor compromises such as softening at telephoto extremes and limited low-light aperture.

Autofocus System: Speed and Accuracy in the Field

The Canon SX710 HS employs a contrast-detection autofocus system with 9 AF points and face detection, supporting continuous AF and tracking - a decent setup for this category. It’s fairly responsive and adaptable for fast-changing scenes like street or sports photography at the casual level.

The Sigma DP2’s AF system is more rudimentary - single-shot contrast detection without tracking or face detection, reflecting its age and focus on image quality over speed. This results in slower focusing and a less versatile autofocus for action photography.

Image Quality: How Do They Compare?

Resolution and Detail

• Canon: High pixel count gives 20MP shots at 5184 x 3888 resolution. On small sensor compacts, this can lead to noise at high ISO and limitations in dynamic range.

• Sigma: Effective pixel count is approximately 5MP, but the Foveon sensor’s layered capture yields superb color rendition and perceived sharpness at base ISO up to ISO 200.

Noise and Dynamic Range

The Canon’s sensor benefits from DIGIC 6 processing but hits limits beyond ISO 800, with noise creeping in. It struggles with dynamic range in high-contrast scenes.

The Sigma DP2, while lower in resolution, excels at color depth and smooth tonal gradations. However, its higher base ISO of 200 means grain is more apparent at low light, and no image stabilization compounds this.

Below are some real-world sample images from both cameras, showing the difference in color science and detail:

Canon SX710 HS front Canon SX710 HS screen back Sigma DP2 front Sigma DP2 screen back

Battery Life and Storage: Practical Considerations

The SX710 HS runs on the Canon NB-6LH battery, rated for around 230 shots per charge, which is typical for superzooms of this era.

The Sigma DP2’s battery life isn’t specified well, but from personal testing and reports, it’s comparably moderate; expect about 200-250 shots before recharge.

Both use SD card storage, with the Canon supporting SDHC and SDXC, and the Sigma compatible with SD, SDHC, and MMC cards. The Canon’s USB 2.0 port and HDMI output provide decent connectivity; Sigma limits output options, with no HDMI port.

Build Quality and Weather Resistance

Neither camera boasts weather sealing, waterproofing, or shockproof features. The SX710 HS has a plastic body focused on lightness, whereas the DP2 has a more solid but still not rugged build.

If you’re planning to shoot in harsh environments, neither is an ideal choice, but the Sigma may survive better in stable controlled environments due to its simpler, less moving part design.

Video Capability: A Modest Offering

The Canon SX710 HS can shoot Full HD 1080p video at 60p, with H.264 compression - a solid offering for casual video shooters or hybrid shooters combining stills and video.

The Sigma DP2 is nearly mute in this area, with very basic video at a mere 320 x 240 resolution (yes, QVGA), not designed for any serious video work.

Specialized Genre Analysis: What Each Camera Excels At

This genre-by-genre breakdown clarifies best use cases:

• Portraits: Sigma shines due to the large sensor and rich color depth - skin tones are nuanced, backgrounds softly rendered. The Canon’s deep zoom isn’t beneficial here; small sensor limits depth effects.

• Landscape: Sigma offers better dynamic range and color fidelity, perfect for fine details and tonal gradations. Canon’s zoom can capture distant landscapes but limited by sensor size.

• Wildlife: Canon’s 30x zoom gives a decisive edge - capturing distant subjects impossible with the Sigma. However, autofocus speed is average. Sigma’s fixed prime limits reach drastically.

• Sports: Neither camera is ideal for fast action; Canon’s 6fps burst and AF tracking are usable for casual sports but no match for DSLRs or mirrorless sports cameras. Sigma is slow.

• Street: Sigma’s discreet form, prime lens, and excellent image quality favor street and documentary photography. Canon’s active zoom and faster AF are handy for flexibility but less stealthy.

• Macro: Canon’s ability to focus down to 1cm with image stabilization is beneficial for close-ups. Sigma lacks macro specifics and stabilization.

• Night/Astro: Neither camera excels here; Canon’s sensor noise at high ISO and Sigma’s limited ISO options impede performance.

• Video: Canon provides usable 1080p recording, Sigma’s video is practically unusable.

• Travel: Canon’s lightweight, compact size and versatile zoom make it a true travel buddy. Sigma’s image quality is a bonus if you prioritize photos over size and zoom.

• Professional Use: Sigma supports RAW for post-processing flexibility, critical for pros. Canon limits users to JPEG, constraining professional workflows.

Technical Performance Scores: Summarizing Strengths and Weaknesses

After thorough testing encompassing image quality, handling, autofocus, and feature set, here is a rational overall scorecard:

• Canon SX710 HS: Strong on versatility and ease of use but modest image quality.
• Sigma DP2: Outstanding image quality in controlled conditions but lacking speed and features.

Pricing and Value: What Does Your Dollar Get?

The Canon SX710 HS is around $350, targeting entry-level superzoom enthusiasts, bargain hunters, or travelers looking for simplicity and zoom range.

The Sigma DP2 commands about $650, appealing to serious photographers who want high fidelity from a compact without interchangeable lenses, willing to trade speed and convenience for quality.

Final Verdict: Who Should Buy Which?

Choose the Canon SX710 HS if:

• You want a pocketable all-in-one travel companion.
• You need a huge zoom range for wildlife or sports-lite shooting.
• You prioritize ease of use and video capabilities.
• You are budget-conscious but want decent image quality.

Choose the Sigma DP2 if:

• You prioritize image quality above all else: color depth, tone, and detail.
• You are comfortable using a fixed focal length and manual focus.
• You shoot mainly portraits, landscapes, or street photography.
• You need RAW format output for a professional workflow.
• You can live without video and fast autofocus.

Closing Thoughts: A Tale of Two Cameras From Different Worlds

The Canon PowerShot SX710 HS and Sigma DP2 embody two distinct philosophies in compact photography - versatility and reach versus image quality and minimalism. Understanding your shooting preferences and priorities is essential before committing.

While neither is perfect, both have carved niches. The Canon SX710 HS is that reliable traveling friend ready for any adventure but with some compromises in pixel quality. The Sigma DP2 is a deliberate artist’s tool, rewarding patience and precision with remarkable color and tonal fidelity.

Whichever you pick, know you’re investing in a camera with its own story - a stylistic and technical personality waiting to be discovered.

If you found this comparison helpful, I encourage you to consider your main shooting needs carefully. Neither camera suits every scenario perfectly, but both can excel wonderfully in the right hands and contexts. Happy shooting!