Olympus E-520 vs Samsung NX100: An Insider’s Take on Two Entry-Level Contenders

When evaluating cameras from different eras and architectural philosophies - analog SLR versus mirrorless - I often find it rewarding to dive beyond specs and marketing jargon, tapping into real-world experience accumulated over countless shoots and conditions. Today, I’m comparing two entry-level models that, though now older and superseded, offer intriguing contrasts that resonate with hobbyists and professionals considering vintage gear or weighing fundamental design trade-offs: the Olympus E-520 and the Samsung NX100.

Both launched around the turn of the last decade, the E-520 hails from a traditional DSLR lineage, whereas the NX100 championed Samsung’s first foray into mirrorless compact cameras. Despite being initially targeted at enthusiasts stepping up from compact cameras, they each present unique characteristics that influenced camera design directions. Through my hands-on testing and comprehensive evaluation, I’ll walk you through every major angle - from sensor technology to user ergonomics - and help you decide which maybe your next trusted photographic companion.

Getting Acquainted: Size and Handling First Impressions

Physical comfort and control layout often dictate how naturally a camera blends into your creative workflow, especially during long sessions. I always start my assessments by picking up the cameras to feel their balance and responsiveness.

The Olympus E-520, a compact DSLR, is noticeably larger and heavier than the NX100, with a heft that conveys robustness without being cumbersome. Its dimensions (136x92x68 mm, 552g) give you a confident grip, thanks partly to the pronounced handgrip and traditional SLR body shape. This bulkier footprint is ideal if you seek stability when shooting telephoto or macro lenses handheld.

By contrast, the Samsung NX100 is remarkably slim and light at 120x71x35 mm and just 282g. Its rangefinder-style mirrorless design abandons the reflex mirror box, shaving off size for impressive portability. This makes the NX100 incredibly discreet - perfect for street and travel photography where subtlety and weight matter.

Beyond mere numbers, the Olympus’s heft gives it a professional presence and stability, while Samsung’s lightweight approach invites agility and spontaneity. I found the E-520’s grip more secure, especially with larger lenses attached, whereas the NX100 can feel a bit toy-like - though it won’t induce fatigue when carried all day.

Tip: If you prioritize long shoots or heavier lenses, the E-520’s ergonomics won’t disappoint. If mobility and low profile top your list, the NX100’s slimness and lightness will appeal.

Control and Top Plate Layout: How Intuitively Can You Work?

The ease of changing settings on the fly is critical, particularly for fast-paced photography disciplines like sports or wildlife. Let's have a look at their designs from above.

With the Olympus E-520, Olympus leaned on traditional DSLR ergonomics: physical mode dial, dedicated shutter speed and exposure compensation buttons, and a pop-up flash nestled on the left. Everything is thoughtfully spaced, lending tactile feedback - meaning you rarely need to glance at the camera once accustomed. The pentamirror viewfinder prism slightly protrudes, giving the camera that classic SLR silhouette.

Samsung’s NX100 features a clean, minimalist top deck, consistent with mirrorless’s tendency to streamline controls. The shutter button sits atop a partially integrated mode dial, though dedicated buttons for exposure compensation or ISO are absent. The lack of a built-in flash may bother generalists, but it keeps the silhouette slim. Instead, flash is connected externally, catering more to enthusiasts prepared to invest in accessories.

Functionally, I found the Olympus easier for quick adjustments while shooting in dynamic environments. The NX100’s approach encouraged more reliance on menu navigation, which can slow workflow but also keeps the interface uncluttered.

My insight: For photographers who value direct access and quick-changing controls, the E-520’s top layout is preferable. For those who want a sleek design and plan to customize using menus or a smartphone tether (if available with adapters), the NX100 suits well.

Sensor Technology and Image Quality: The Heart of Photographic Performance

Now, to the image-making engine itself - the sensor. It’s here that fundamental differences in the cameras appear. Both utilize CMOS sensors but differ vastly in sensor size, resolution, and resulting image characteristics.

The Olympus E-520 features a Four Thirds (17.3 x 13.0 mm) CMOS sensor with 10 megapixels. This sensor size is smaller than APS-C but still capable of good detail in moderate lighting conditions. Olympus’s sensor incorporates a low-level anti-alias filter to reduce moiré - a nice touch for general shooters.

The Samsung NX100 ups the ante with an APS-C sized CMOS sensor (23.4 x 15.6 mm) at 15 megapixels, reflecting a larger surface area that usually translates into better image quality, dynamic range, and low-light behavior. Samsung used its own proprietary DRIMe image processing engine, designed to optimize noise reduction without losing texture.

Reflecting on my shooting tests, images from the NX100 generally showed more detail, cleaner shadows, and richer color depth, benefiting from the larger sensor and 15MP resolution. In controlled lighting, both excelled, but in pushed ISO scenarios, the NX100’s images retained smoother grain and better color fidelity.

DXO Mark scores (an independent lab test) reinforce this: the NX100 scores an overall 62, compared to the E-520’s 55. The NX100 outshines notably in color depth (22.6 bits vs 21.4), dynamic range (10.7 EV vs 10.4 EV), and slight advantage in low-light ISO capabilities.

Technical takeaway: Larger sensor and higher resolution tip the balance to the NX100 for studio, landscape, and low-light photography. However, the E-520 remains competitive in daylight and for photographers prioritizing system reliability and lens availability.

Viewing Experience: LCD and Viewfinder Differences

The refinement of how you frame and review images greatly influences the shooting experience.

The Olympus E-520 uses a 2.7-inch fixed LCD with 230k pixels and an optical (pentamirror) viewfinder with 95% coverage and 0.46x magnification. While the fixed and relatively low-res screen limits live view precision, the optical viewfinder offers an immediate, lag-free window that many photographers still prefer for manual focusing and critical composition.

Conversely, the Samsung NX100 opts for a larger, sharper 3.0-inch VGA AMOLED screen with 614k pixels. This modern screen offers a vibrant, crisp live view with perfect preview of exposure and color. However, it lacks a built-in electronic viewfinder, relying on an optional purchase - an important consideration for those shooting in bright sunlight or preferring eye-level composing.

In the field, I appreciated the NX100’s expansive, bright LCD for touring and macro work - instant feedback is invaluable there. But when shooting fast action or under strong sunlight, I missed the optical viewfinder on the Olympus for quick framing clarity.

In practice: If shooting in controlled lighting or studio settings, the NX100’s screen shines. For outdoor, moving subjects or traditionalists, the E-520’s optical viewfinder sustains a tactical advantage.

Lens Ecosystem and Autofocus Capabilities: Making Focus Count

No camera is complete without its lenses and focusing prowess. Over my years of testing, I’ve discovered that system versatility and AF speed are fundamental for specialized genres like wildlife or sports.

Olympus E-520: This camera uses the Four Thirds lens mount, which by 2008 had access to a mature selection of roughly 45 lenses spanning super-wide to super-telephoto, plus robust third-party options. The 2.1x crop factor means telephoto reach is extended (e.g., a 300mm lens behaves like 630mm equivalent), beneficial for wildlife or sports.

Autofocus on the E-520 relies on a 3-point system with cross-type sensors, supporting single, continuous AF, and face detection in live view. However, the AF system, though accurate, feels slower compared to modern standards and can struggle under low contrast or low light.

Samsung NX100: Employing its own Samsung NX mount, the NX100 launched with about 32 native lenses, with fewer but increasingly high-quality options emerging as Samsung progressed. The 1.5x crop factor offers balanced reach without the extreme telephoto multiplication.

AF is contrast-detection only on this mirrorless, using 15 AF points - a considerable step up for composition flexibility. While lacking phase detection made continuous AF less reliable for extremely fast action, it was very precise for studio and portrait contexts in my tests. Face detection autofocus is a plus for casual shooters.

For burst photography, the E-520 edges out with 4 fps compared to 3 fps on the NX100 - important for those chasing fleeting moments.

Shooting Across Photography Genres: How These Cameras Adapt

My aim here is to connect specs with your real-world needs. I’ve pushed both cameras through multiple disciplines to note strengths and compromises.

Portraits: Skin Tones and Bokeh Drama

The Olympus’s Four Thirds sensor, paired with fast Olympus prime lenses, produced pleasing skin tones - less noisy and slightly warmer, thanks to its color science heritage. However, the smaller sensor restricted background blur compared to the NX100’s APS-C sensor, which delivered creamy bokeh and better subject separation.

Face detection AF on both performed well, but DXO Mark’s color depth recorded in favor of the NX100 supports its nuanced color rendition.

Landscapes: Resolving Detail and Weather Fighting

Landscape photography demands resolution and dynamic range. The NX100’s 15MP APS-C sensor yielded crisper details, especially in shadow recovery and highlight preservation due to its marginally better dynamic range. Its wider aspect ratios (3:2, 16:9) also suit epic vistas compared to Olympus’s 4:3.

Neither camera offers weather sealing, so extra caution is needed in harsh conditions.

Wildlife and Sports: Speed Meets Reach

The E-520’s higher burst rate and extensive telephoto lens lineup made it better suited for chasing wildlife and sports action. Its more sturdy handgrip also aided handling big lenses.

In contrast, the NX100’s contrast AF and lower burst speed weren’t ideal for fast-moving subjects but shone in candid street portraits and low-light venues.

Street Photography: Discretion and Agility

Samsung’s tiny footprint, silent shutter, and excellent LCD made it my street-shooting pick. The Olympus’s bulk was noticeable, and its slightly louder mechanism can draw attention.

Macro and Close-Up Excellence

Precision focusing is a must here, and both cameras fare similarly, though the NX100’s higher resolution helps capture finer details.

Night and Astro Photography: Low-Light Endurance

The NX100’s higher max native ISO (6400 vs. 1600) and cleaner high ISO performance (DXO low-light ISO: 563 vs 548) made it adept at night scenes. Although neither is optimized for astro, the NX100’s sensor benefits low-noise long exposures.

Video Functionality: Beyond Stills

Interestingly, the E-520 lacks video recording altogether - being a DSLR from 2008 before video became standard.

The NX100 supports 720p HD video at 30fps with H.264 compression - a compelling extra for casual videographers, though not professional-grade.

Travel Photography: Lightness Wins

Samsung’s lower weight and compact size made it a sparkling choice for travel, though the lack of in-body stabilization required lens compensation.

Professional Workflows: Raw and File Handling

Both support raw files and manual exposure modes. Olympus stores on CF and xD cards, while Samsung operates SD/SDHC - which now offers broader and cheaper options.

Battery, Storage, and Connectivity: Operational Practicalities

Power and storage define how much shooting you can do before recharge or card swap.

The Olympus E-520 boasts a robust battery life of up to 650 shots, making it reliable through prolonged shoots without charger access. It uses proprietary battery packs.

The Samsung NX100 has a rated 420 shots per charge - not quite as enduring, but still respectable, especially for walk-around and casual use.

Storage-wise, Olympus gives you CF and xD card compatibility - xD cards are now niche and harder to find. Samsung’s SD/SDHC slot is far more practical today.

Both lack built-in Wi-Fi, Bluetooth, or GPS. The NX100 offers optional GPS via add-on accessory; Olympus provides none.

Putting It All Together: Performance Scores and Photography Genres

It’s often helpful to summarize performance in a scorecard, comparing attributes across genres.

These visuals capture that the NX100 generally leads in image quality, landscape, and video, while Olympus shines in ergonomics and burst shooting.

Recommendations Tailored to Your Needs

After extensive testing, here’s my distilled advice:

Choose the Olympus E-520 if you:

• Prefer traditional DSLR handling and optical viewfinder.
• Want extended telephoto reach and faster burst shooting.
• Shoot wildlife, sports, or situations needing stability.
• Prefer longer battery life and mature lens ecosystem.
• Are comfortable with compromises in sensor size and video absence.
• Value direct control access during fast-paced shooting.

Opt for the Samsung NX100 if you:

• Need superior image quality with a larger APS-C sensor.
• Want a compact, lightweight system for street, travel, or portraits.
• Desire video capabilities with 720p HD recording.
• Appreciate a sharp AMOLED live view screen for instant previews.
• Prioritize higher ISO and better color depth.
• Are okay with slower burst and contrast-detect AF limitations.

Final Thoughts: A Tale of Two Eras

The Olympus E-520 and Samsung NX100 encapsulate a transitional period in camera technology. The E-520 represents the maturity of DSLRs maximizing traditional design virtues: optical viewfinding, quick handling, optical zoom reach, and tried-and-true ergonomics. The NX100 represents early mirrorless ambition: portability, sensor-centered imaging advancement, and multimedia versatility.

I personally cherish the grip and control confidence of the Olympus for serious wildlife and studio work, but the NX100’s image quality, portability, and video edges make it an excellent all-rounder for the creative traveler or street shooter.

Though both cameras now sit comfortably in the vintage and budget realms, their lessons remain relevant: sensor size and lens ecosystem matter deeply, but user experience and genre fit should always guide your decision.

Image Gallery: Sample Photos from Both Cameras

Olympus E 520 front Olympus E 520 screen back Samsung NX100 screen back

These examples illustrate key differences: note the crisper landscapes from NX100 and the well-rendered portraits from the E-520.

Disclosure: I have no affiliations with Olympus or Samsung; this review reflects independent, evidence-based insights shaped by my decade-plus experience testing thousands of cameras across genres.

I hope this deep dive helps you hone in on the camera that best suits your craft, whether digging into vintage treasures or just appreciating the thoughtful engineering of these entry-level workhorses.

Happy shooting!