Fujifilm GFX 100S vs Sony a99

This is a full comparison between the cameras Fujifilm GFX 100S and Sony a99. We compare them by looking at the categories you see below.


Fujifilm GFX 100S is manufacturered by Fujifilm but Sony a99 is from Sony. Both Fujifilm and Sony are well known brands though.

Fujifilm GFX 100S were released 2021 and Sony a99 was released 2012. That is a 9 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Fujifilm GFX 100S 2021
Sony a99 2012

Type of camera

Sensors / crop factor

These cameras have different sensors. Fujifilm GFX 100S has a "Fujifilm Medium Format"-sensor while Sony a99 has a "Sony Full Frame"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Fujifilm GFX 100S 39.5 mm
Fujifilm Medium Format sensor
Crop factor/focal length multiplier by * 0.79
Sony a99 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:


Fujifilm GFX 100S has a 102 MP (Megapixels) resolution while Sony a99 has 24 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Fujifilm GFX 100S 102 MP
101756928 pixels
11648 x 8736
Sony a99 24 MP
24000000 pixels
6000 x 4000

Fujifilm GFX 100S has a 324 % larger resolution than Sony a99. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Sony a99 has a larger ISO-range than Fujifilm GFX 100S. Sony a99 has an ISO range that stretches from 100 to 25600 while Fujifilm GFX 100S has 100 to 12800.

Camera ISO Range
Fujifilm GFX 100S 100-12800
Sony a99 100-25600

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Fujifilm GFX 100S
Lens compatibility chart for Sony a99

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Fujifilm GFX 100S can shoot up to 5 pictures per seconds and Sony a99 can shoot up to 6 pictures per seconds.

Camera FPS (Frames per second)
Fujifilm GFX 100S 5
Sony a99 6

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Fujifilm GFX 100S and Sony a99 can shoot movies.


The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Fujifilm GFX 100S weighs 900 gr (equal to 1.98 lb) which is 11% heavier than Sony a99 and its 812 gr (or 1.79 lb).

Camera Weight
Fujifilm GFX 100S 900 gr
1.98 lb
Sony a99 812 gr
1.79 lb

Fujifilm GFX 100S vs Sony a99 Specs

Below you will find the complete and detailed technical specs for both Fujifilm GFX 100S and Sony a99, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Fujifilm GFX 100S
Sony a99
Name Fujifilm GFX 100S Sony a99
Manufacturer Fujifilm Sony
Release Date and Price
Fujifilm GFX 100S
Sony a99
Release Year 2021 2012
Release Date 2021-01-27 2012-09-12
MSRP 5999 USD 2799 USD
Buy it today
Camera Type
Fujifilm GFX 100S
Sony a99
Camera Type Mirrorless SLT
Fujifilm GFX 100S
Sony a99
Sensor Size Medium Format (approx 44 x 33 mm) Full Frame (approx 36 x 24 mm)
Resolution 11648 x 8736 pixels 6000 x 4000 pixels
Megapixels 102 MP 24 MP
Image Processor X-Processor 4 Bionz
Fujifilm GFX 100S
Sony a99
ISO Range 100 - 12800 100 - 25600
White Balance Presets 7 8
Custom White Balance Yes Yes
Image Stabilization Yes
Image Stabilization CIPA Rating 6 stops 0 stops
Uncompressed format RAW + TIFF RAW
Optics & Focus
Fujifilm GFX 100S
Sony a99
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Face Detection
Phase Detect
Multi Area
Selective Single Point
Face Detection
Focus Points 425 19
Lens Mount Fujifilm G

See Compatible Lenses
Sony A

See Compatible Lenses
Focal Length Multiplier Medium Format
0.79x multiplier
24 mm becomes 19 mm
50 mm becomes 40 mm
100 mm becomes 79 mm
200 mm becomes 158 mm
Full frame
No multiplier
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Fujifilm GFX 100S
Sony a99
Articulated LCD Tilting Fully articulated
Screen size 3.2 3
Screen dots 2360000 1229000
Touch screen Yes No
Screen type TFT LCD TFT Xtra Fine color LCD
Live view Yes Yes
Viewfinder Type Electronic Electronic
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.61 (0.77 35mm equiv.) 0.71
Viewfinder Resolution 3690000 N/A
Photography features
Fujifilm GFX 100S
Sony a99
Frames per second 5 fps 6 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/8000 seconds
Built-in Flash No No
Built-in Flash Range N/A N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes No
Metering modes Multi
Center Weighted
Center Weighted
Exposure Compensation +/- 5 (at 1/3 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Fujifilm GFX 100S
Sony a99
Video recording Yes Yes
Video format MPEG4
Video resolution 1920 x 1080
3840 x 2160
4096 x 2160
1440 x 1080
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Fujifilm GFX 100S
Sony a99
Memory Card SD/SDHC
Memory Stick Pro Duo
Fujifilm GFX 100S
Sony a99
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (802.11 b/g/n + Bluetooth)
Remote Control Supported (no further information) Yes (Wired or Wireless (Optional))
GPS No Yes
Body & Dimensions
Fujifilm GFX 100S
Sony a99
Enviromentally sealed Yes Yes
Battery Battery Pack Battery Pack
Battery Details NP-W235 lithium-ion battery & charger
Lithium-Ion NP-FM500H rechargeable battery & charger
Battery Life (CIPA) 460 shots 500 shots
Width 150 mm 147 mm
Height 104 mm 111 mm
Depth 87 mm 78 mm
Weight 900 gram 812 gram