What’s Changed? The Fuji GFX 100S offers a few substantial updates to its predecessor. It has a more powerful image stabilization system; reduced shutter lag; a slimmer, more compact build; an eight-direction control nub that replaces previous GFX cameras’ four-direction joysticks; the all-new Nostalgia Neg. film-simulation mode; and a smaller battery to fit its smaller body. It’s not all great news, though. The smaller battery is rated for just over half the number of shots per charge as the standard GFX 100’s battery.

102MP Medium-Format Mirrorless. The GFX 100S uses a 43.8 × 32.9mm CMOS sensor for superior sharpness, accuracy, and image quality in a variety of lighting conditions. You get a broad ISO 100-12800 sensitivity range that can be extended to ISO 50-102400, while each pixel’s large size makes for efficient light gathering.

X-Processor 4 Imaging Processor. With large amounts of data captured, the GFX 100S needs a versatile and powerful processor to handle the load. The X-Processor 4 fits the bill, giving you continuous shooting at up to 5 fps, and DCI and UHD 4K30 video capture. It also gives you a range of Film Simulation modes, including the new, subtly retro-styled Nostalgia Neg. mode.

Multiple Aspect Ratios. You can adapt this camera to various aspect ratios, including 4:3 (default), 3:2, 16:9, 1:1, 65:24, 5:4, and 7:6.

Fuji G-Mount. The larger medium-format sensor requires lenses with a larger image circle, thus was born the G-mount. As it’s designed for mirrorless, the G-mount features a short flange back distance of just 26.7mm. Fuji X-mount lenses aren’t compatible with the medium-format GFX 100S.

UHD and DCI 4K Video Capture. As mentioned above, the GFX 100S’s combination of large sensor and fast processor means that it can internally capture UHD and DCI 4K30p video at up to 4:2:0 10-bit, and 4K30p 4:4:4 10-bit video via HDMI output, both at up to 400 Mb/s. You can simultaneously record external and internal video, and the included F-Log gamma setting provides a flat picture that’ll make color editing easier.

Sensor-Shift Image Stabilization. The built-in five-axis sensor-shift image-stabilization system reduces the appearance of camera shake by up to 6.0 stops when used with OIS-enabled lenses, which is crucial when you’re working at slower shutter speeds or in difficult lighting conditions. That said, image stabilization works with any lens, including non-stabilized lenses.

Hybrid Autofocus System. The built-in phase-detection autofocus system uses 425 selectable points, which cover nearly the entire sensor area. It delivers fast, accurate performance with low-light sensitivity down to -5.5 EV. Face and Eye-Detection AF modes are available when you’re working in AF-C mode and when you’re recording video.

EVF and Tilting Touchscreen LCD. The fixed 3.69m-dot OLED electronic viewfinder features 0.77x magnification while offering 100% coverage. You also get a tilting 3.2-inch, 2.36M-dot rear touchscreen LCD for navigating menus, controlling image playback, shooting in live view, and selecting focus area. Finally, there’s a 1.8-inch sub LCD on the top plate that lets you quickly verify shooting settings and exposure data.

Durable, Compact Build. The GFX 100S features a weather- and dust-resistant build, operating in temperatures as low as 14º Fahrenheit. The camera has dual SDHC / XC memory card slots that support UHS-II memory, and the included rechargeable NP-W235 battery is rated for an estimated 460 shots per charge. The camera body is markedly smaller than previous cameras in this series, like the GFX 100 and GFX 50S.

Additional Features. Integrated Bluetooth 4.2 low-energy and Wi-Fi connectivity allow you to share images to a mobile device or use a mobile device to control the camera. Pixel-Shift Multi-Shot mode uses Fuji’s Pixel Shift Combiner software to combine 16 RAW images into one massive 400MP image. Multiple Exposure mode lets you shoot two consecutive overlaid frames, the first of which will be displayed on the rear LCD to help with alignment for the second one. You can use Interval shooting for up to 999 consecutive frames, with a 1-second to 24-hour delay between exposures.