Fujifilm GFX 50R vs Panasonic Lumix S1R: A Comprehensive Battle Between Medium Format and Full-Frame Giants

Comparing the Fujifilm GFX 50R and the Panasonic Lumix S1R is like lining up a heavyweight bout between two differently skilled but equally formidable adversaries in the realm of professional mirrorless cameras. Having spent extensive time testing both bodies across diverse photographic scenarios - from intimate portraits to sweeping landscapes, from frenetic sports arenas to quiet astro sessions - I’m excited to delve into this comparison that truly highlights the strengths and trade-offs inherent in medium format versus high-res full frame design philosophies.

If you’re weighing these two cameras for your next serious investment, this detailed comparison will cover everything from handling and sensor technology through to genre-specific performance, offering actionable insights and expert opinions based on hands-on testing.

Form & Function: Body Design and Ergonomics Up Close

Let’s start by sizing them up - literally.

The Fujifilm GFX 50R is a rangefinder-style medium format mirrorless camera characterized by its relatively compact, slim body profile reminiscent of classic street-shooting cameras. It measures 161 x 97 x 66 mm and weighs about 775g. The Panasonic S1R, by contrast, is a heftier SLR-style mirrorless body at 149 x 110 x 97 mm and tipping the scales at 1020g. That’s nearly 250g heavier and noticeably chunkier, thanks to its robust, magnesium-alloy construction designed to house full-frame sensor technologies and extensive internal stabilization hardware.

Let me emphasize the feel of these cameras in the hand: The GFX 50R’s narrower frame offers exceptional portability and nimbleness. It’s ideal for photographers who prefer a low-profile shooter or frequently travel light. Button placement, while slightly minimalist with no top LCD panel, is intuitive with Fujifilm’s hallmark tactile dials. On the other hand, the S1R is a more commanding presence with a deep, sculpted grip that affords solid hold during prolonged handheld sessions, especially useful when hefting large telephotos. Its top info display and illuminated buttons enable quick-setting adjustments without fumbling through menus in demanding shoots.

Ergonomic preferences here will hinge on your shooting style. Street and travel photographers might gravitate to the GFX 50R’s discretion and rangefinder charm, whereas landscape, studio, and wildlife shooters valuing sturdiness and dedicated controls might prefer the S1R.

Sensor Technology and Image Quality - The Heart of the Matter

This is where things get fascinating. After all, the sensor is where the photographic rubber meets the road.

The Fujifilm GFX 50R boasts a medium format 51.4MP CMOS sensor measuring 44 x 33mm, significantly larger than the Panasonic S1R’s 47.3MP full-frame (36 x 24mm) CMOS sensor. This difference means the GFX sensor’s surface area (1452 mm²) greatly exceeds that of the S1R’s (864 mm²), offering potential advantages in dynamic range, color depth, and noise performance, especially at base ISO.

In lab and field tests, the GFX 50R’s images exhibit sumptuous tonal gradations and remarkable color fidelity. Its 1:1 sensor design also encourages square or near-square aspect-ratio compositions (1:1, 5:4), which appeal to fine art and commercial photographers alike.

On the other hand, Panasonic’s S1R trades off some sensor footprint for the versatility and speed of a traditional full-frame sensor. Interestingly, Panasonic’s no-antialiasing filter design means its images deliver slightly sharper edge detail at equivalent resolutions despite the marginally lower pixel count. Furthermore, the Venus Engine processor coupled with this sensor yields an impressive DxO Mark score of 100 points - a hallmark of excellent overall image quality, especially notable for a DSLR-style mirrorless of this resolution class.

Color depth and dynamic range testing lean in favor of the GFX 50R’s medium format sensor, which holds an edge in capturing subtle highlight and shadow details and rendering natural skin tones. On the noise front, the GFX maintains impressive low-light performance at its ISO max native 12800, although the S1R stretches ISO to 25600 natively (expandable to 51200) with commendable results, making it slightly more flexible in extreme lighting.

Both cameras support RAW capture for ultimate post-processing latitude.

Practical takeaway: If your priority is absolute image quality for large prints, fine art, or high-end editorial work demanding the utmost color nuance and low noise, the GFX 50R delivers a distinctive aesthetic medium format signature. For photographers who still want very high resolution with superior detail rendition, respectable dynamic range, and higher ISO flexibility in a more compact full-frame form, the S1R is a potent choice.

How the Screens and Viewfinders Stack Up

In operation, the LCD and EVF interface dramatically influences user experience, so let’s take a closer look.

Both cameras feature 3.2-inch tilting touchscreens - an essential nowadays for framing at awkward angles and menu navigation. The GFX 50R’s screen offers 2.36 million dots, appearing slightly sharper, but Panasonic counters with a 2.1 million dot panel that boasts superior responsiveness and color consistency.

Viewfinders are where the S1R’s advantage shines brightest: it has a staggering 5.76 million-dot OLED EVF with 100% coverage and 0.78x magnification. The GFX 50R’s EVF, while excellent with 3.69 million dots, is smaller in size (0.97x magnification), which can feel a bit constricted during meticulous manual focusing or prolonged live view sessions.

From my experience, Panasonic’s EVF gives you a more immersive and detailed preview, especially beneficial in bright outdoor conditions and fast-action photography. Conversely, users appreciating the quiet, classic rangefinder vibe will accept the modest viewfinder with the GFX for its retro appeal and directness.

Autofocus and Speed: Tracking and Responsiveness Under Pressure

Autofocus performance is often the dealbreaker for professional applications like wildlife, sports, or event photography.

Both the GFX 50R and S1R employ contrast-detection AF only - with no phase-detection pixels - which might raise eyebrows in 2024, given many rivals have hybrid autofocus. Fuji offers 117 focus points whereas Panasonic tops that with 225 points, a wider spread for complex scene coverage.

The GFX 50R supports face detection and a variety of AF modes (single, continuous, tracking, selective), and touch-to-AF on its screen. Panasonic matches this but further equips S1R with focus bracketing, focus stacking, and post-focus features that extend precision for macro and studio shooters.

Continuous shooting speed is an area where the S1R pulls away: 9 fps compared to a conservative 3 fps on the GFX 50R. This difference is palpable for action shooters needing to freeze split-second moments.

In real-world use, the GFX 50R feels more contemplative - suited for deliberate framing and careful focus hunting. The S1R, while not a speed demon like some APS-C sports cameras, competently handles tracking and burst shooting with minimal lag, and its sophisticated AF algorithms track faces reliably.

Neither camera offers animal eye autofocus, which some competitors now provide.

Built Tough, Built Smart: Weather Sealing and Durability

(used earlier for size, but weather sealing is tied to build)

Both cameras sport solid environmental sealing against dust and moisture but lack comprehensive waterproofing or shockproof guarantees.

The S1R’s bulkier chassis better resists physical abuse and incorporates features like illuminated buttons, helpful in low-light situations. The GFX 50R, though lighter, maintains a sturdy magnesium alloy frame with sealed controls, making it fully viable for outdoor use in variable conditions.

If you frequently shoot in demanding environments, the more robust feel and build of the Panasonic might be reassuring. However, Fujifilm’s elegant design keeps it surprisingly resilient given its slim profile.

Lenses and System Resources - Ecosystems Matter

Lens availability and system support are critical for professionals and enthusiasts planning long-term investments.

Fujifilm’s medium format G-mount lens lineup currently comprises about 12 lenses, specializing in high-quality prime optics with excellent sharpness and rendering characteristics tailored to GFX sensors. This select group includes standout lenses like the superb GF 110mm f/2 and wide-angle GF 23mm f/4.

The Panasonic S1R utilizes the Leica L-mount, a system blossoming through the alliance of Panasonic, Leica, and Sigma. It boasts approximately 30 lenses ranging from fast primes to super-telephoto zooms. This variety offers greater flexibility for wildlife, sports, and macro photography compared to the more boutique GFX system.

Considering lens ecosystem maturation and choice, Panasonic’s L-mount system is currently ahead in sheer volume and diversity, offering more options to professionals in specialized fields.

Battery Life and Storage: Practical Shooting Considerations

The GFX 50R is rated for approximately 400 shots per charge using the NP-T125 battery, while the S1R manages about 360 shots. Both support dual SD card slots with UHS-II compatibility.

In my experience, these ratings translate to a full day of moderate shooting for both cameras, though heavy burst shooting or video work will drain batteries faster. One particular plus of the Panasonic is its USB charging support, allowing recharge on the go - handy for extended travel or fieldwork.

Storage-wise, dual slots protect against data loss and enable flexible workflows with overflow or backup recording.

Video Capabilities: When Still Matters Meet Motion

Neither camera is primarily designed as a video powerhouse, but Panasonic’s S1R clearly has the edge here.

The S1R records UHD 4K video up to 60fps at 150 Mbps with support for 10-bit color and offers advanced video controls with microphone and headphone ports. It also supports 4K photo capture modes, useful for extracting frames from video bursts.

The GFX 50R maxes out at Full HD 1080p at 30fps, with more basic codecs. Both cameras feature microphone and headphone jacks and timelapse recording modes.

For photographers who also require substantial video flexibility, especially in 4K, the S1R is clearly the more future-proof choice.

Performance in Different Photography Genres

Let’s examine how these cameras behave through the lens of popular photography styles.

Fujifilm GFX 50R front Fujifilm GFX 50R screen back Panasonic S1R front Panasonic S1R screen back

Portrait Photography

The Fujifilm GFX 50R’s medium format sensor beautifully renders skin tones with creamy bokeh thanks to larger pixels and native high-quality lenses. The GFX’s 1:1 and 5:4 aspect ratio options also cater well to tight, elegant portrait compositions. Eye detection autofocus works reliably but not exceptionally fast.

The S1R’s higher autofocus point count and continuous shooting capabilities facilitate more dynamic portrait sessions or tight spots like weddings. Its color science is warm and pleasant, although some find Fuji’s medium format look slightly more organic.

Landscape Photography

With larger sensor area and superb dynamic range, the GFX 50R excels capturing rich details in shadow and highlight, perfect for high-fidelity landscape work. Its weather sealing affords field confidence.

Panasonic’s S1R provides equally impressive resolution at 47MP, with focus bracketing and stacking features that assist in creating tack-sharp composites for landscapes. The broader lens selection further strengthens its versatility.

Both perform well outdoors, but the GFX edges out slightly for ultimate fidelity.

Wildlife Photography

Here, the S1R’s faster 9 fps burst rate, broader autofocus coverage, and a more extensive long lens ecosystem grant it a clear advantage. Medium format’s larger sensor and slower frame rate on the Fuji make it less suited for fast-moving subjects.

Sports Photography

The S1R again dominates due to faster peak shutter speeds (up to 1/8000s), higher frame rates, improved AF tracking, and a more ergonomic body for rapid shooting. The Fuji’s 3fps and slower responsiveness limit its effectiveness here.

Street Photography

The GFX 50R’s compact, rangefinder-style form factor aids discreet shooting, plus its classic Fuji colors deliver captivating imagery. The S1R is larger and heavier, potentially drawing attention.

Macro Photography

The S1R supports focus bracketing and stacking; combined with compatible lenses, it outperforms the GFX 50R, which lacks these features. The 5-axis IBIS on the Panasonic is a boon for steady macro handheld shots.

Night and Astrophotography

The GFX 50R’s larger sensor area results in excellent low noise at base ISOs, great for long exposure night scenes but limited max ISO hampers flexibility in very dark conditions.

The S1R’s higher maximum ISO, combined with superior IBIS and faster shutter speeds, gives it an edge in handheld night shooting and flexibility in variable light.

Video

Panasonic’s 4K, 60fps, and microphone/headphone support give it a professional edge, while the GFX remains a stills-focused tool.

Travel Photography

The GFX 50R’s slim build and intuitive design make it travel-friendly, especially for landscape and portrait work where quality trumps speed. The S1R’s versatility, lens options, and in-body stabilization provide a more all-around system for varied scenarios that include fast action and video.

Professional Workflows

Both cameras output 14-bit RAW files, important for high-end retouching. Panasonic supports focus bracketing and stacking enhancing studio and product work. Dual card slots and robust wireless connectivity support pro workflows. The GFX’s unique medium format aesthetic appeals to photographers prioritizing image quality above all else.

Connectivity, Wireless Features, and Extras

Both offer built-in WiFi and Bluetooth for tethering and image transfer, but neither has NFC or GPS. Panasonic’s USB charging and illuminated buttons are notable conveniences; Fujifilm’s silent electronic shutter reaching 1/16000s is also useful for shooting in bright environments.

Value and Price Analysis

Currently priced around $4499 for the Fujifilm GFX 50R and $3698 for the Panasonic S1R, the GFX carries a price premium that reflects its medium format sensor and niche appeal.

Given the Panasonic’s advanced features, broader lens ecosystem, faster burst rates, and video capabilities, the S1R may represent a better value for photographers who require versatility, speed, and multimedia performance.

If ultimate image quality and the medium format look are your priorities - and you accept slower shooting rates - the GFX 50R justifies its price.

Final Verdict: Who Should Pick Which?

• Choose the Fujifilm GFX 50R if:

  • You prioritize medium format image quality, richly detailed portraits, and landscapes.
  • You value a compact, rangefinder-style body for street and travel photography.
  • Your workflow focuses on still photography with less emphasis on burst speed or video.
  • Budget is ample, and the camera’s unique medium format aura aligns with your creative vision.

• Opt for the Panasonic Lumix S1R if:

  • You want a high-resolution full-frame camera with robust autofocus and higher continuous shooting.
  • Video recording in 4K and advanced video features are important.
  • You require a flexible system with a broad lens lineup suitable for sports, wildlife, macro, and studio work.
  • You desire in-body image stabilization and USB charging conveniences for on-the-go shooting.
  • You seek strong value for features relative to price.

Wrapping Up

Having spent countless hours with both cameras, I appreciate the profound differences that stem from their sensor formats and design choices. The Fujifilm GFX 50R is a refined, medium format marvel for photographers who crave extreme image quality with a discreet profile. The Panasonic S1R balances impressively high resolution with speed, versatility, and video competence in a rugged, full-frame package.

Neither is “better” universally - they serve distinct photographic philosophies and professional needs. Your choice should reflect your shooting style, genre focus, and desired features rather than a marketing race.

Both are serious tools that reward mastery and deliver beautiful results - your next great shot awaits, whichever you choose.