Sigma DP1x vs. Sony NEX-5N: A Hands-On Comparison of Two APS-C Innovators

In the rapidly evolving world of digital photography, especially in the early 2010s, two cameras emerged targeting photographers seeking a balance between image quality and compactness: Sigma’s large sensor compact DP1x and Sony’s entry-level mirrorless NEX-5N. As someone who has tested thousands of cameras over the years, I find this particular comparison fascinating - not only because both share APS-C sensors but because they cater to fundamentally different philosophies.

This extensive comparison draws on direct field experience, technical analysis, and practical handling scenarios. By the end of this article, you will understand how these cameras stack up across multiple photographic disciplines, plus when one might be the perfect tool for your creative toolbox.

First Impressions and Ergonomics: Where Size and Handling Tell the Story

Before we dive into specs and pixels, the very first thing any photographer notices is how a camera feels in the hand - not just for comfort, but how that translates into intuitive controls and shooting confidence.

The Sigma DP1x leans heavily into the "large sensor compact" concept, sporting a fixed 28mm-equivalent lens and a somewhat chunky body (113 x 60 x 50 mm, 250 g). Its boxy design emphasizes sturdiness and simplicity. Grip-wise, it's more of a pocketable “pocket DSLR” than a travel-friendly compact, reasonable for deliberate shooting rather than snapping on the fly.

Conversely, the Sony NEX-5N embraces a mirrorless rangefinder-style design (111 x 59 x 38 mm, 269 g) that impresses with its slimmer profile and lighter weight. The 3-inch tilting touchscreen with a higher 920k-dot resolution immediately promises a more interactive user experience - a stark contrast to Sigma’s 2.5-inch fixed 230k-dot LCD. The NEX-5N’s body feels more refined, geared toward agile shooting, especially when paired with Sony’s vast E-mount lens lineup.

The practical implication? If you prize portability without sacrificing sensor size, NEX-5N’s design wins hands down. Sigma’s approach trades compactness for simplicity and durability, suiting photographers who prefer a focus-on-photography approach, especially in controlled situations.

Sensor Technology and Image Quality: Apples to Oranges - Yet Both Capable

The real heart of any camera is, of course, its sensor. Here, Sigma and Sony diverge dramatically, underpinning contrasting approaches to image creation.

The DP1x employs Sigma’s unique Foveon X3 CMOS sensor at APS-C size (20.7 x 13.8 mm) but with just a 5-megapixel output (2640 x 1760). Unlike traditional Bayer sensors used by most cameras (including the NEX-5N), the Foveon captures full color information at every pixel location using three layers stacked vertically. This theoretically results in extremely rich color rendition and sharpness per pixel, albeit at the cost of overall resolution.

Meanwhile, the Sony NEX-5N uses a conventional 16MP Bayer CMOS sensor, measuring 23.4 x 15.6 mm, offering a much larger sensor area (365.04 mm² versus Sigma’s 285.66 mm²) and significantly higher resolution (4912 x 3264). This gives the NEX-5N more cropping flexibility and prints with greater detail on larger formats.

From my experience, Sigma’s Foveon sensor delivers an unparalleled color palette and image tonality, particularly in low ISO settings, with smoother gradations and less color noise - but only if you embrace its lower resolution constraint and slower workflow. Sony’s Bayer sensor delivers crisp, clean images with much better high ISO performance, faster processing, and more dynamic range.

In essence, if you are a discerning portrait or landscape photographer emphasizing color fidelity and detail at base ISO, the DP1x can produce uniquely "film-like" output. However, for general versatility, higher resolution needs, and better noise control in challenging lighting, the NEX-5N remains the safer all-rounder.

Control Layout and User Interface: Classic Simplicity versus Feature-Rich Usability

How a camera responds to your touch under time pressure can be as critical as image quality - especially for event, wildlife, or street photographers.

The DP1x is straightforward but minimalistic: it offers essential controls and manual exposure modes, but no autofocus areas, no face detection, and no customizable buttons. Its shutter priority, aperture priority, and manual modes cover basic exposure scenarios, but the lack of continuous shooting or eye autofocus limits responsiveness for fast action.

The NEX-5N, in contrast, dazzles with a feature set typical of early mirrorless tech: 25 autofocus points, face detection (no eye detection, however), continuous shooting up to 10 FPS, and multiple metering modes - multisegment, spot, and center-weighted. Its touchscreen adds an intuitive interface layer for quick AF point selection and menu navigation.

Ergonomically, the DP1x’s controls feel tactile but somewhat dated, more suited to deliberate composition than burst photography. The NEX-5N’s control layout is better suited for dynamic shooting scenarios, blending fast manual adjustments with autofocus flexibility.

Viewing and Composing: Electronic Viewfinder Options and Display Advantages

Comparing viewing through an electronic viewfinder (EVF) with an LCD-only approach is always enlightening, particularly when considering shooting comfort and accuracy.

Sigma’s DP1x lacks both an EVF and touchscreen, relying solely on its basic fixed LCD. The 2.5-inch 230k-dot screen is one area where the camera notably lags, offering limited brightness, poor resolution, and no articulation. This can make manual focusing and framing challenging, particularly in bright daylight.

The Sony NEX-5N lacks a built-in EVF but supports an external electronic viewfinder accessory, giving photographers the option of eye-level composing - a valuable flexibility, especially under bright sunlight. Its 3-inch tilting touchscreen with 920k-dot resolution offers crisp, bright framing with touch AF and menu control, enhancing the overall shooting experience tremendously.

In real-world testing, the NEX-5N’s screen is a joy to use, allowing fast adjustments and framing from unusual angles. For the DP1x user, careful live view focusing and conservative shooting workflows are necessary, limiting spontaneity.

Autofocus and Shooting Speed: Precision or Responsiveness?

For genres like wildlife or sports photography, autofocus speed and accuracy can make or break the shot.

The DP1x employs a single-contrast detection autofocus system with no autofocus points, face detection, or tracking capabilities. Manual focus is available but tricky given the lack of a focus peaking aid or magnification. Its slow AF and absence of continuous burst shooting make it impractical for anything beyond static subjects or careful compositions.

Sony’s NEX-5N features a more advanced contrast-detection AF system with 25 points and face detection, plus continuous autofocus in video and stills - though it lacks phase detection AF, which limits speed compared with later models. Its 10 FPS burst mode is respectable for an entry-level mirrorless camera of its time, offering decent tracking in good light.

Based on my hands-on trials, the NEX-5N’s AF system is usable for casual wildlife and street shooting, especially combined with quick shutter speeds. The DP1x, by contrast, demands patience and suits studio or landscape work best.

Lens Systems and Versatility: Fixed vs. Expandable

A camera’s compatibility with lenses is pivotal for long-term investment and creative flexibility.

The DP1x features a fixed 28mm f/4 lens - a sturdy prime with a field of view that suits environmental portraits, street, and landscapes. However, its max aperture of f/4 is modest, limiting low-light capabilities and shallow depth-of-field effects.

Sony’s NEX-5N uses the Sony E-mount, compatible with over 120 lenses ranging from ultra-wide to super-telephoto, third-party offerings included. This ecosystem allows photographers to build out a specialized kit for any scenario, whether macro, sports telephotos, or fast primes for portraits.

In my experience, while the DP1x’s lens is optically impressive in sharpness and color rendering, its lack of zoom or alternative lenses restricts creative options. Sony’s system flexibility, in contrast, is great for enthusiasts who want to adapt gear based on project needs.

Durability, Weather Sealing, and Build Quality: Handling the Elements

Whether shooting landscapes in inclement weather or street photography on dusty city streets, a camera’s resilience matters.

Neither the DP1x nor the NEX-5N offers environmental sealing or significant weather resistance. Their bodies, while solid, require careful handling to avoid dust or moisture ingress.

The DP1x’s slightly chunkier build might offer a perception of toughness, but actual tests show no specialized coatings or sealing. Similarly, the NEX-5N is lightweight plastic-aluminum construction without dust or splash-proofing.

For rigorous pro use or wet conditions, both cameras would benefit from protective covers or external shielding.

Battery Life and Storage: Getting the Shot Without Running Dry

Shooters on the go need cameras that won’t flicker off mid-session.

Sony’s NEX-5N shines here with approximately 460 shots per charge using the NP-FW50 battery, which is remarkable for mirrorless cameras of its era. It supports SD/SDHC/SDXC and Sony’s Memory Stick formats - a nice touch for backward compatibility.

The Sigma DP1x’s battery lifespan is less documented, but tends to be shorter, compounded by its lack of power-saving options and slow data processing that drains energy. It stores images on a single SD/ MMC card slot, standard but unremarkable.

For longer outings, the NEX-5N is clearly the more reliable companion.

Video Capabilities: Not Just Still Photography Anymore

Video recording is increasingly important; even enthusiasts expect decent video from their cameras.

Here, the Sony NEX-5N is the clear winner. It offers Full HD 1080p video at 60fps in AVCHD format, plus additional formats at 1440 x 1080 and VGA resolutions. Although there are no external mic or headphone ports, the built-in mic quality is reasonable, and its continuous autofocus in video mode is a bonus.

Sigma’s DP1x is effectively a still camera with a rudimentary video mode maxing out at 320x240 - practically unusable for contemporary video needs.

I see the NEX-5N as a viable secondary video camera, while DP1x remains strictly specialized for stills.

Image Output and Workflow: Raw Formats and Post Processing

Both cameras support raw formats, essential for professional-grade editing and workflow integration.

Sigma’s raw files are unique due to the Foveon sensor, requiring Sigma Photo Pro software to extract full-color data with proper demosaicing. This yields high color depth but longer processing times and a steeper learning curve.

Sony’s ARW raw files are widely supported across popular editing suites, faster to handle, with more standardized color profiles.

For most photographers, especially those needing efficient turnaround, the NEX-5N offers a smoother workflow. Sigma’s files reward patient, color-critical editing but are less practical for rapid professional delivery.

Real-World Performance Across Photography Genres

To bring all this together, I evaluated both cameras through various shooting scenarios and genres.

Sigma DP1x screen back Sony NEX 5N front Sony NEX 5N screen back

• Portraits: The Sigma’s Foveon sensor delivers nuanced skin tones and subtle color shifts unmatched by Bayer sensors, though shallow depth of field is constrained by the f/4 lens and fixed focal length. Sony’s NEX-5N, with access to fast primes like the 50mm f/1.8 OSS, achieves more pronounced bokeh and precise eye detection autofocus (though lacking eye-AF) for better subject isolation.

• Landscapes: Here Sigma’s color rendition and sharpness stand out, with rich tonal gradations. However, the NEX’s higher resolution allows detailed cropping and more flexibility. Neither camera sports weather sealing, limiting rough outdoor use.

• Wildlife: Sony’s faster autofocus, burst rate, and longer lenses tip the scale heavily. Sigma’s slow AF and fixed lens make wildlife shooting impractical.

• Sports: Similar conclusion - NEX-5N’s 10 FPS and better AF system allow tracking fast-moving subjects, while DP1x cannot keep up.

• Street: DP1x’s discreet form and fixed wide 28mm make it unobtrusive; however, slow AF dampens candid captures. The NEX-5N is larger but more responsive. The tilting screen also aids low-angle shots.

• Macro: Neither camera excels in macro - the absence of focus stacking or bracketing is limiting. However, Sony’s lens options lend more versatility.

• Night/Astro: Sigma’s low native ISO and slow lens limit night use, whereas NEX-5N’s 25600 ISO max, higher sensor dynamic range, and faster lenses offer superior low-light results.

• Video: NEX-5N is the clear winner with competent HD video. Sigma is a non-starter.

• Travel: NEX-5N’s lens versatility, better battery life, and lighter body make it more travel-friendly, despite slightly larger size.

• Professional Work: Sigma appeals to specialized portrait and fine art photographers valuing unique color science. Sony is better positioned as a flexible tool in a professional’s kit.

Overall Performance Ratings: A Numbers-Supported Synopsis

We synthesized my lab measurements alongside community benchmarks to evaluate crucial metrics.

Sony NEX-5N scores highly on resolution, dynamic range, ISO performance, usability, and video capability. Sigma DP1x leads on color depth and unique image character but lags in speed, resolution, and versatility.

Genre-Specific Performance: What Shines Where?

Breaking it down per genre:

• Portraits: Sigma edges ahead due to color fidelity
• Landscapes: Close, though NEX-5N’s resolution gives flexibility
• Wildlife & Sports: Sony dominates
• Street: Mixed, but Sony’s responsiveness favours candid shots
• Macro: Sony preferred
• Night/Astro: Sony superior
• Video: Sony only viable choice
• Travel: Sony for versatility
• Professional Workflow: Depends on priorities; Sigma for color, Sony for adaptability

Final Thoughts and Recommendations

After spending extensive hours behind both viewfinders and nitpicking real-world output and operation, here is my distilled advice:

• Choose the Sigma DP1x if you:

  • Crave profoundly rich, film-like color rendition for portraits or landscapes
  • Shoot mostly static subjects in controlled environments
  • Are comfortable investing time into complex raw processing workflows
  • Appreciate simplicity and a unique fixed focal length prime experience

• Opt for the Sony NEX-5N if you:

  • Need a versatile, user-friendly mirrorless system covering a wide range of photographic genres
  • Value higher resolution, faster shooting, and better autofocus
  • Want decent in-camera video capabilities
  • Desire a growing lens ecosystem with adaptability for evolving photography interests
  • Require robust battery life and a superior LCD interface for efficient shooting

Both cameras represent important milestones in APS-C camera evolution but serve quite distinct user profiles. For a dedicated color-science enthusiast willing to slow down and savor each frame, the Sigma DP1x offers an unmatched signature look. For the flexible enthusiast or pro looking for a dependable, pocketable mirrorless with excellent image quality, the Sony NEX-5N is the recommendation without hesitation.

Whichever you choose, grasp the philosophy behind these cameras and match it to your shooting style and ambitions - because hardware is only as good as the person wielding it.

I hope this in-depth comparison clarifies the strengths and compromises inherent to each model and empowers your next camera investment.