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Fujifilm X100VI vs Sony a6400

A premium fixed-lens compact against a versatile interchangeable-lens body. One perfect 35mm prime you take everywhere, or a system you build around a viewfinder?

By Stephen V.Last updated How we pick

Both are APS-C cameras with a viewfinder, but they represent two different philosophies. The Fujifilm X100VI is a premium fixed-lens camera built around a single 35mm-equivalent prime, a 40-megapixel sensor, a gorgeous hybrid viewfinder and in-body stabilization — it’s about carrying one beautiful tool everywhere. The Sony a6400 is an interchangeable-lens body: a lower-resolution sensor, no stabilization, but the freedom to swap lenses and grow a kit, for a lot less money.

They also sit far apart on price and availability, so the real question is whether you want a deliberate one-lens camera with class-leading image quality, or a flexible, affordable system you shape to your needs. Here’s how they compare.

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Fujifilm X100VISony a6400
SensorAPS-C X-Trans, 40 MPAPS-C CMOS, 24.2 MP
LensFixed 23mm f/2 (35mm equivalent prime)Interchangeable (Sony E-mount)
ViewfinderHybrid optical/electronic2.36M-dot electronic (EVF)
Stabilization5-axis in-body (IBIS)None (lens-based only)
Video6.2K30, 4K604K30 (oversampled)
Weather sealingWeather-resistant (with adapter/filter)Yes (dust/moisture resistant)
Weight521 g with battery403 g with battery

Both cameras in full

#1Best for one-lens image quality

Fujifilm X100VI

The camera everyone wants and few can find in stock. A fixed 35mm-equivalent lens, a gorgeous hybrid viewfinder, in-body stabilization and 40 megapixels make it a superb everyday and street camera — just know it is a deliberate, one-focal-length tool, not a do-everything body, and it sells above list.

Strengths

  • 40 MP sensor with in-body stabilization
  • Unique optical/electronic hybrid viewfinder
  • Pocketable, beautifully built, film-simulation color

Trade-offs

  • Fixed 35mm-equivalent lens only — no zoom, no swapping
  • Chronically out of stock and sold above list price
SensorAPS-C X-Trans CMOS 5 HR, 40 MP
LensFixed 23mm f/2 (35mm equivalent)
Video6.2K30, 4K60
Stabilization5-axis in-body (IBIS)
Weight521 g with battery

Specifications read from the manufacturer listing, on July 18, 2026.

#2Best for versatility and value

Sony a6400

A durable all-rounder that has aged well thanks to genuinely sticky autofocus and a proper viewfinder. It is the pick if you want stills as much as video and don't need in-body stabilization — the eye AF still tracks a moving subject better than a lot of newer, cheaper bodies.

Strengths

  • Real-time Eye AF that still holds up years later
  • Built-in electronic viewfinder for shooting in bright sun
  • Weather-sealed against dust and moisture

Trade-offs

  • No in-body stabilization
  • Menus are the older, denser Sony layout
SensorAPS-C CMOS, 24.2 MP
MountSony E
Video4K30 (oversampled)
Viewfinder2.36M-dot EVF
Weight403 g with battery

Specifications read from the manufacturer listing, on July 18, 2026.

Which should you buy?

Buy the Fujifilm X100VI ifyou want the best image quality in a camera you’ll actually carry every day, and you love the discipline of one focal length. The 40-megapixel sensor, in-body stabilization, film-simulation color and that hybrid viewfinder make it a special object as much as a tool, and the fixed 35mm lens is perfect for street, travel and everyday life. The catches are real: it doesn’t zoom or change lenses, it costs far more, and it’s chronically hard to find at list price. It leads our best compact cameras and best Fujifilm cameras roundups.

Buy the Sony a6400 ifyou want flexibility and value. It costs a fraction of the X100VI, and being able to change lenses means the camera can become whatever you need — a fast prime for portraits, a telephoto for wildlife, a wide for landscapes. Its Real-time Eye AF is a benchmark, it’s weather-sealed, and the E-mount has the deepest, cheapest lens catalog in APS-C. You give up the bigger sensor, stabilization and the X100VI’s sheer image quality, but you gain a whole system. It anchors our best APS-C cameras roundup.

The honest bottom line: the X100VI is the better camera for image quality and joy, and the a6400 is the smarter, more flexiblebuy for most people — especially first-time interchangeable-lens shoppers. If you love the fixed-lens idea, compare the X100VI with a smaller-sensor compact in our X100VI vs ZV-1 II piece; if you go the a6400 route, your first upgrade should be a prime lens.

Frequently asked questions

Is the X100VI's image quality worth the price over the a6400?

For outright quality, the X100VI is clearly ahead - a 40-megapixel sensor versus 24, in-body stabilization, and a superb fixed prime lens. But the a6400 costs a fraction as much and, paired with a good lens, produces images most people would be thrilled with. You're paying the X100VI premium for the sensor, the fixed-lens experience, the hybrid viewfinder and high demand, not just raw image quality.

Can the X100VI change lenses?

No. The X100VI has a fixed 35mm-equivalent prime that can't be removed (screw-on converters shift it slightly, but you can't swap to a different lens). The a6400 uses interchangeable Sony E-mount lenses, so you can add a portrait prime, a telephoto or a wide lens. If you want one do-everything setup that grows over time, the a6400 is the flexible choice.

Which is better for travel and street photography?

Both are excellent, in different ways. The X100VI is the classic street and travel camera - discreet, pocketable, one perfect focal length, superb files - if you're happy committing to 35mm. The a6400 is more versatile for travel because you can carry a small zoom or swap primes for different scenes, at the cost of a little more bulk and no stabilization.

Does the a6400 have in-body stabilization?

No. The a6400 relies on stabilized lenses, while the X100VI has 5-axis in-body stabilization that helps for handheld low-light stills and video. If in-body stabilization matters to you on the Sony side, you'd need to step up to a body like the a6700; on the a6400, choose a lens with optical stabilization or use a tripod or gimbal.

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