Panasonic GH4 vs Pentax K-50

Panasonic GH4 vs Pentax K-50: A Hands-On Comparison for Enthusiasts and Professionals

When edging toward upgrading your camera setup, the choice isn’t always straightforward - particularly when two models occupy different segments yet both promise robust performance. In this article, I’ll dissect the Panasonic Lumix GH4 and the Pentax K-50, two cameras released within months of each other, to help you understand their strengths, limitations, and which might be right for your photography ambitions. Having spent extensive hours testing them side by side, I’ve uncovered insights you won’t get from spec sheets alone.

First Impressions: Size, Build, and Handling

From the outset, the GH4 and K-50 convey distinct design philosophies. The Panasonic GH4 is a compact SLR-style mirrorless camera with a fully articulated OLED touchscreen, weighing in at 560 grams. The Pentax K-50, on the other hand, pins itself as an entry-level DSLR, sporting an optical pentaprism viewfinder and a slightly heftier 650-gram body.

Handling the two side by side reveals some interesting contrasts. The GH4’s body - with dimensions of 133 x 93 x 84 mm - is slightly chunkier in depth compared to the K-50’s 130 x 97 x 71 mm but overall feels more wrist-friendly due to its refined grip contours and lighter weight. Pentax fans will appreciate the weather sealing and rugged textured grips on the K-50, which follows Pentax’s tradition of durable bodies tailored to outdoor shooting.

Ergonomically, the K-50’s DSLR-style layout features familiar dials and a retractable fixed LCD screen, while the GH4 surprises with an innovative fully articulating touchscreen - ideal for vlogging and challenging shooting angles.

Controls and Interface: Who Has the Edge?

Operator comfort extends beyond size into intuitive controls. The GH4 boasts a clean top panel with a dedicated mode dial, an exposure compensation dial, and custom function buttons - perfect for rapid adjustments during professional shoots. Its back is dominated by the articulated OLED touchscreen, which supports touch-to-focus, menu navigation, and even touch shutter release.

The K-50 presents a more traditional DSLR control scheme: a mode dial, well-spaced buttons, and a rear 3-inch LCD that is fixed and not touch-enabled. While it lacks touchscreen finesse, the K-50’s button placements are comfortably sized and give instant access to exposure settings and drive modes.

For photographers accustomed to the DSLR paradigm, the K-50’s controls will feel instantly familiar and reliable - no surprises. Conversely, hybrid shooters or videographers will appreciate the GH4’s touchscreen synergy that facilitates faster, more precise operation.

Sensor Technology: Where Size Meets Resolution

Now let’s dive into the heart of the cameras - the sensor. The Panasonic GH4 features a Four Thirds 16-megapixel CMOS sensor measuring 17.3 x 13 mm, while the Pentax K-50 sports a larger APS-C 16 MP CMOS sensor at 23.7 x 15.7 mm.

Despite similar megapixel counts, the K-50’s larger sensor area (372.09 mm² vs. GH4’s 224.9 mm²) generally translates to better noise handling and dynamic range. DXOMark scores support this: the K-50 edges out slightly with an overall score of 79 compared to GH4's 74.

During side-by-side testing, I noted that in good light, both cameras delivered excellent image detail with sharpness and color fidelity. Pentax’s sensor has a slight advantage in color depth (23.7 bits vs. 23.2) and dynamic range (13.0 vs. 12.8 EV), yielding richer tonal gradations in landscape and portrait work.

Low-light sensitivity also favors the K-50, scoring 1120 ISO on DXOMark’s low-light test compared to 791 for the GH4. Practically, that means cleaner shadows and less luminance noise at higher ISOs for the Pentax.

Autofocus Systems: Speed, Accuracy, and Real-World Application

When it comes to autofocus (AF), the GH4 and K-50 depart sharply. Panasonic’s mirrorless design relies on contrast-detection AF with 49 focus points, face detection, and continuous AF during live view. Its AF is fast and precise for video and stills but struggles slightly in low-contrast, fast-action conditions.

Conversely, the Pentax K-50 employs an 11-point phase-detection AF system, 9 of which are cross-type sensors, delivering solid accuracy in good light. It also offers continuous AF and face detection, but without touch screen focusing. In practice, while the K-50 AF system is dependable for static subjects and moderate action, it lags behind modern mirrorless hybrids in burst tracking.

For wildlife and sports shooters focused on tracking fast-moving subjects, neither camera is a top contender in 2024 terms - yet the GH4’s higher continuous shooting rate (12 fps vs. 6 fps) and in-body image stabilization (absent in the GH4) may tip the scales depending on your lens choices and shooting style.

Image Stabilization: The Battle of Stability

An area where the Pentax K-50 shines is in-body image stabilization (IBIS), a feature entirely absent from the GH4. The K-50’s sensor-shift stabilization effectively compensates for camera shake across various lenses, an invaluable tool in low-light and macro work.

On the flip side, the GH4 relies on optical image stabilization provided by compatible lenses. While Panasonic’s Micro Four Thirds ecosystem offers some stabilized lenses, the lack of in-body stabilization means users are at the mercy of glass quality and stabilization technology.

For handheld shooting or video work, the K-50’s stabilization assists in keeping images sharp and videos smooth under challenging conditions.

Video Capabilities: Panasonic’s GH4 Leads the Charge

One area where the GH4 emphatically outperforms the K-50 is video. The GH4 was a milestone camera at launch for its 4K video recording capabilities - offering 4K UHD at 24p, 25p, and 30p, plus full HD up to 60p.

Panasonic GH4 front Panasonic GH4 screen back Pentax K 50 front Pentax K 50 screen back

Beyond resolution, the GH4 includes professional video features - microphone and headphone ports for audio monitoring, 4K photo modes (capturing stills from 4K footage), and a fully articulated screen enhancing vloggers’ versatility.

The K-50 offers only Full HD video capped at 30p, with no HDMI output or audio input, positioning it clearly as an entry-level DSLR video option. While it performs acceptably for casual video, its feature set lags behind modern standards and the GH4’s professional-grade configurability.

Display and Viewfinder: Articulated OLED vs. DSLR Optical

Display technology reflects the different usage philosophies. The GH4’s 3-inch OLED fully articulating touchscreen delivers sharp (1036k dot resolution), vibrant playback and live-view utility. Touch responsiveness speeds up focusing and menu interactions - a boon for video and experimental angles.

The K-50’s fixed 3-inch TFT LCD (921k dots) is less bright and static but excels in daylight visibility. Its pentaprism optical viewfinder, with 100% coverage and 0.61x magnification, offers a natural shooting experience, critical for action and street photography.

For photographers who prize the tactile clarity and lag-free precision of optical viewfinders, the K-50 remains the go-to. However, the GH4’s EVF and touchscreen embrace the flexibility mirrorless shooters prize today.

Durability and Weather Sealing: Both Cameras Are Ready to Work Hard

Both cameras feature weather sealing - a critical feature for outdoor photographers who brave rain, dust, and temperature extremes.

The GH4 boasts environmental sealing including splash and dust resistance, a must in professional outdoor work. The K-50 is similarly rugged, with a highly weather-resistant chassis and impressive body construction designed to survive rough conditions.

Neither camera is waterproof or freezeproof, so add protective gear if shooting extreme environments.

Lens Ecosystem: Micro Four Thirds vs. Pentax K-mount Choices

Lens availability often shapes the long-term appeal of a system. The GH4’s Micro Four Thirds mount is supported by over 100 lenses from Panasonic, Olympus, Sigma, and others - covering wide angles, primes, macros, telephotos, and super-telephotos.

The K-50’s Pentax KAF2 mount offers an even broader array - roughly 150 lenses including many legacy glass options, primes with classic rendering, and weather-resistant zooms. Pentax’s commitment to K-mount compatibility means modern autofocus lenses mix with manual classics, granting exceptional flexibility.

If you already own lenses from either ecosystem, that likely drives your decision. For newcomers, Micro Four Thirds is highly portable and well-suited to travel and video, whereas Pentax K-mount caters to photographers favoring traditional DSLR handling and depth of glass options.

Battery Life and Storage: Practical Considerations

The GH4 uses the DMW-BLF19 battery rated for approximately 500 shots per charge, while the K-50’s D-LI109 battery claims about 410 shots. In my tests, the GH4 tends to last longer under mixed conditions - important for extended shoots.

For storage, both accept SD cards (SD/SDHC/SDXC). Both cameras have a single storage slot - something to consider if you require backup redundancy on professional assignments.

Connectivity and Wireless Features

Connectivity is where the GH4 also shines a little brighter. It includes built-in Wi-Fi for remote shooting, image transfer, and firmware updates - features missing on the K-50, which offers no built-in wireless at all. The GH4 lacks Bluetooth and NFC but compensates with HDMI output and USB 2.0 ports supporting tethered shooting.

Pentax does provide optional GPS module support via third party accessories, useful for travel and geo-tagging workflows.

Real-World Performance Across Photography Genres

To put these specs into the context that matters, I tested both cameras across key categories, rating their performance based on extended shooting sessions and image analysis.

Portrait Photography:
The GH4’s micro four-thirds sensor renders pleasing skin tones and excellent bokeh with fast prime lenses, though its smaller sensor limits ultimate background blur compared to the K-50’s APS-C sensor. The K-50’s larger sensor yields creamier bokeh and more dynamic skin tone depth. Neither camera offers animal eye autofocus but face detection works well in both.

Landscape Photography:
Here, the K-50’s superior dynamic range and higher native ISO make it more effective in HDR and low-light dusk shots. Weather sealing gives both an advantage; however, the GH4’s articulation and lighter build make it versatile in awkward compositions.

Wildlife Photography:
Burst rate and autofocus speed matter here. The GH4’s 12 fps is a clear advantage over the K-50’s 6 fps, though the K-50’s phase detection AF with cross-type points provides reliable focus. The K-50’s in-body stabilization pairs well with heavy telephotos, but the GH4’s lens stabilization combined with fast frame rates benefits most action shooters.

Sports Photography:
Similar to wildlife, GH4’s high continuous shooting and faster response time favor sports. The K-50 is competent but better suited for moderate action due to lower frame rates.

Street Photography:
At 560 grams, the GH4 is lighter and less obtrusive than the bulkier K-50. The GH4’s silent electronic shutter and articulating screen allow candid, discreet shooting. The K-50’s DSLR silhouette is more noticeable but its optical finder excels for fast framing.

Macro Photography:
The K-50’s stabilization is a distinct benefit here, as macro work is sensitive to shake. The GH4 benefits from post-focus features enabling focus stacking workflows. Both cameras pair well with excellent macro lenses in their mounts.

Night and Astrophotography:
Low-light ISO performance leans to the K-50, but GH4’s lower native minimum ISO (200 vs. 100) allows marginally longer exposures with less noise. Neither camera sports specialized astro modes, so manual control is key.

Video Work:
A standout domain for the GH4, which offers pro-level 4K, extensive codec options, headphone jack, and articulated screen; the K-50 is limited to 1080p with no advanced video controls. For creators prioritizing hybrid use or video-centric shoots, there is no contest.

Travel Photography:
The GH4’s compact mirrorless build, robust environmental sealing, and Wi-Fi put it ahead for travelers seeking a camera that can handle versatile shooting scenarios. The K-50’s bulk and lack of wireless connectivity require more careful packing but reward with larger sensor imaging and better lens shielding.

Professional Use and Workflow:
Both cameras shoot RAW, but the GH4’s extensive video codec support and touchscreen aid pro workflows integrating still and motion. Battery life favors the GH4 on longer shoots, while the K-50’s rugged design appeals to those needing a tough DSLR in adverse conditions.

Value Assessment: Price versus Performance

With the Panasonic GH4 hovering around $1500 (body only) and the Pentax K-50 approximately at $610, budget considerations loom large.

For users prioritizing video work, system versatility, and future-proof mirrorless tech, the GH4’s higher price is justified. Its 4K video, articulation, and wireless features represent excellent value for professional and enthusiast hybrid shooters.

The K-50 offers a reliable, rugged APS-C DSLR experience with weather sealing, sensor stabilization, and a massive lens lineup at nearly half the price - ideal for photographers focused primarily on stills and who prefer optical viewfinders and solid ergonomics on a budget.

The Bottom Line: Which One Fits You?

If your photography demands modern video capabilities, rapid burst rates, and flexible body design conducive to diverse shooting environments, the Panasonic GH4 is a strong contender. It’s particularly compelling for content creators, travel photographers, and those invested in the Micro Four Thirds ecosystem.

Conversely, if you lean toward traditional DSLR feel, prioritize still image quality - especially in low light and landscapes - and seek rugged reliability without breaking the bank, the Pentax K-50 holds significant appeal. Its superior dynamic range, in-body stabilization, and extensive lens choices speak to photographers valuing core imaging quality and mechanical sturdiness.

Both cameras have commendable weather sealing, robust builds, and solid image quality. The choice boils down largely to whether mirrorless video-centric versatility or DSLR optical clarity and sensor size are paramount to your craft.

For the enthusiast wanting cutting-edge video and agility in a compact frame, GH4 is the more forward-looking choice. For photographers who prize durability, solid imaging at a killer price, and the joy of optical viewing, the K-50 is a trusted companion.

Final Recommendations:

• Choose Panasonic GH4 if: You want 4K video, articulated touchscreen, faster burst shooting, and ready wireless features for dynamic shooting and video projects.

• Choose Pentax K-50 if: You prioritize stills with strong low-light performance, sensor-based stabilization, durable build, and need an affordable DSLR platform with wide lens support.

I hope this deep dive into the GH4 and K-50 clarifies which fits your photographic journey. If you have specific shooting styles or priorities you want to explore further, feel free to reach out!

This comparison involved direct hands-on usage, rigorous laboratory tests for sensor and autofocus performance, and field assessments across multiple genres to provide you the most trustworthy advice possible.

Thank you for reading, and happy shooting!