FUJIFILM GFX100RF vs Sony RX1R III (DSC-RX1RM3)

The short answer

Sony RX1R III (DSC-RX1RM3) is lighter, at 498 g against 735.
Sony RX1R III (DSC-RX1RM3) is the cheaper of the two at the price its maker announced: INR 469,990 against INR 549,999.

Compared only on figures both makers publish. Everything else is in the table below.

2 phones side by side. Show only differences

Specification	FUJIFILM GFX100RF ₹5,49,999launch price	Sony RX1R III (DSC-RX1RM3) ₹4,69,990launch price
Placement
At its price	Not assessed	Not assessed
Spec index	—	—
Key Specs
Display	3.15 in 2.10 million-dot tilting touchscreen	7.5 cm (3.0-type) TFT touch panel, 2,359,296 dots
Effective Pixels	102 million	Approx. 61.0 megapixels (still images)
ISO Range	ISO 80 to 12800 (extended ISO 40 to 102400)	ISO 100-32000, expandable to ISO 50-102400
Sensor	43.8 mm x 32.9 mm GFX 102MP CMOS II	35mm full frame (35.7 x 23.8 mm) Exmor R CMOS
Lens Mount	Fixed FUJINON lens, not interchangeable	Fixed lens, non-interchangeable
Video Resolution	DCI 4K 4096 x 2160	4K 3840 x 2160 up to 30p; HD 1920 x 1080
General
Launch Date	April 2025	Announced and available July 2025
Body Type	Rangefinder-style compact	Fixed-lens full-frame premium compact
Camera Type	Medium-format fixed-lens mirrorless	Digital still camera
Colours	Black, Silver	—
Sensor
Effective Pixels	102 million	Stills approx. 61.0 MP; movies approx. 50.8 MP; total approx. 62.5 MP
Sensor Size	43.8 mm x 32.9 mm	35.7 x 23.8 mm (35mm full frame)
Sensor Type	GFX 102MP CMOS II with primary colour filter	Back-illuminated Exmor R CMOS, no optical low-pass filter
Aspect Ratio	4:3, 3:2, 16:9, 65:24, 17:6, 5:4, 7:6, 1:1, 3:4	3:2 (L: 9504 x 6336)
Image Processor	X-Processor 5	BIONZ XR
Image Stabilisation	Digital image stabilisation, movie mode only; IS MODE BOOST	Electronic (movie: Active / Off)
Lens
Focal Length	f = 35 mm (28 mm equivalent in 35 mm format); 10 elements in 8 groups with 2 aspherical elements	f = 35 mm
Digital Zoom	Digital Tele-Converter 45 mm, 63 mm and 80 mm (36 mm, 50 mm and 63 mm equivalent)	Step Crop Shooting 35 mm (60 MP), 50 mm (29 MP), 70 mm (15 MP); Clear Image Zoom approx. 1.5x 4K and 2x HD (movies)
Aperture Range	F4 to F22 in 1/3 EV steps	F2 maximum aperture
Filter Size	—	49 mm
Focus
Autofocus System	Intelligent Hybrid AF (contrast and phase detection)	Fast Hybrid AF (phase-detection AF / contrast-detection AF)
Subject Detection	Animal, bird, automobile, motorcycle and bike, aeroplane, train	Auto, Human, Animal, Bird, Insect, Car, Train, Airplane
Focus Points	Single point 13 x 9 or 25 x 17; Zone 3 x 3, 5 x 5, 7 x 7 and Custom	Max. 693 phase-detection points (stills and movies)
Low-light Focus	Phase detection -3.0 EV; contrast 0.0 EV	EV-4 to EV20 (ISO 100 equivalent, AF-S)
Exposure
ISO Range	Standard ISO 80 to 12800 in 1/3 steps; extended ISO 40, 25600, 51200, 102400; movie ISO 100 to 12800, extended 25600	Stills ISO 100-32000 (expandable 50-102400); movies ISO 100-32000 equivalent
Shutter Speed	Mechanical 30 s to 1/4000 s; electronic 30 s to 1/16000 s; bulb up to 60 minutes	Mechanical 1/4000-30 s and Bulb; electronic 1/8000-30 s; movies 1/12800-1 s
Continuous Shooting	Approx. 6.0 fps mechanical shutter; approx. 3.0 fps electronic shutter	Hi: 5.0 fps; 52-frame RAW, 120-frame JPEG Extra fine buffer
Exposure Compensation	-5.0 to +5.0 EV stills; -2.0 to +2.0 EV movie	+/- 5.0 EV (1/3 EV steps)
Flash	Dedicated TTL flash compatible via hot shoe; TTL Auto, Standard, Slow Sync, Manual and Multi modes	No built-in flash; Multi Interface Shoe, sync 1/4000 s
Metering Modes	TTL 256-zone metering: Multi, Spot, Average, Centre Weighted	1200-zone evaluative metering, EV-3 to EV20
Video
Frame Rates	DCI 4K and 4K at 29.97p/25p/24p/23.98p; Full HD also 59.94p and 50p	4K up to 29.97p; HD up to 119.88p
Video Formats	MOV (ProRes 422 HQ/LT, H.265, H.264) and MP4 (H.264, AAC); 50 to 720 Mbps; All Intra and Long GOP	XAVC S and XAVC S-I (MPEG-4 AVC/H.264)
Video Resolution	DCI 4K 4096 x 2160; 4K 3840 x 2160; Full HD 2048 x 1080 and 1920 x 1080	4K 3840 x 2160; HD 1920 x 1080
Microphone Input	3.5 mm stereo mini connector	Yes, 3.5 mm stereo minijack; Multi Interface Shoe with digital audio interface
Headphone Jack	3.5 mm stereo mini connector	No
Display
Screen Size	3.15 in	7.5 cm (3.0-type)
Screen Type	Tilt-type touch screen colour LCD monitor	TFT touch panel, fixed (non-articulating)
Screen Resolution	Approx. 2.10 million dots	2,359,296 dots
Viewfinder	0.5 in OLED colour viewfinder, approx. 100% coverage	1.0 cm (0.39-type) XGA OLED electronic viewfinder
Viewfinder Magnification	0.84x (50 mm lens at infinity, -1.0 m-1 dioptre)	Approx. 0.70x (with 50 mm lens equivalent at infinity, -1 m-1)
Viewfinder Resolution	Approx. 5.76 million dots	—
Design
Height	90.4 mm	Approx. 67.9 mm
Width	133.5 mm	Approx. 113.3 mm
Weight	Approx. 735 g with battery and memory card; approx. 654 g body only	Approx. 498 g with battery and memory card; 454 g body only
Depth	76.5 mm	Approx. 87.5 mm (74.5 mm from front of lens to monitor)
Build Material	—	Magnesium alloy outer shell
Storage
File Formats	JPEG, HEIF 4:2:2 10-bit, RAW 14/16-bit RAF, TIFF 8/16-bit; MOV, MP4	JPEG, HEIF, RAW (Sony ARW 5.0)
Supported Cards	SD, SDHC, SDXC up to 2 TB; UHS-I, UHS-II, Video Speed Class V90; external SSD up to 2 TB for ProRes	SD UHS-I/UHS-II
Memory Card Slots	—	One
Battery
Battery Model	NP-W235 Li-ion battery	NP-FW50 rechargeable battery pack
USB Charging	Yes, via USB Type-C	Yes, via USB Type-C with USB Power Delivery
Shots per Charge	Approx. 820 frames; approx. 100 to 140 minutes 4K video	Approx. 270 (viewfinder) / 300 (LCD monitor), CIPA standard
Charging	—	In-camera charging via USB Type-C, USB Power Delivery compatible
Connectivity
Bluetooth	Version 4.2 (Bluetooth low energy), 2402 to 2480 MHz	Bluetooth Standard Ver. 4.2 (2.4 GHz band)
Wi-Fi	IEEE 802.11a/b/g/n/ac with WPA, WPA2 and WPA3	IEEE 802.11a/b/g/n/ac (2.4 GHz and 5 GHz bands)
USB	USB Type-C, 10 Gbps	USB Type-C, SuperSpeed USB 5 Gbps (USB 3.2)
HDMI	HDMI Micro connector (Type D)	HDMI micro connector (Type-D); 3840 x 2160 up to 29.97p, YCbCr 4:2:2 10-bit