Drop a RAF RAW file from your Fujifilm GFX100S and get the exact shutter actuation count in seconds — processed entirely in your browser, never uploaded anywhere.
Check Shutter Count →The Fujifilm GFX100S (2021) brought 102-megapixel medium format photography into a surprisingly compact body — the smallest and lightest 100 MP camera at the time of launch. It uses the same 43.8 × 32.9 mm Fujinon-GF format sensor as the GFX100, but in a body closer in size to the GFX50S. The mechanical shutter is rated at 150,000 actuations.
| Model | Release | Sensor | Rated Shutter Life | RAW Format |
|---|---|---|---|---|
| Fujifilm GFX100S | 2021 | 102 MP medium format | 150,000 | RAF |
| Fujifilm GFX100S II (successor) | 2024 | 102 MP medium format BSI | 200,000 | RAF |
| Fujifilm GFX50S II (sibling) | 2021 | 51.4 MP medium format | 150,000 | RAF |
The Fujifilm GFX100S stores the image counter in MakerNote tag 0x1438 of every RAF RAW file. ShutterCount reads it automatically.
With a 150,000-actuation rated lifespan, medium format usage patterns, and a higher replacement cost than APS-C bodies, shutter count is especially important to assess for the GFX100S.
| Actuation Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 10,000 | 0 – 7 % | Very low use — near new |
| 10,000 – 40,000 | 7 – 27 % | Low use — typical for occasional studio use |
| 40,000 – 90,000 | 27 – 60 % | Moderate use — normal for active landscape/studio work |
| 90,000 – 130,000 | 60 – 87 % | High use — negotiate price, shutter replacement likely needed |
| 130,000 + | 87 %+ | Near or past rated life — budget for shutter service |
Fujifilm's RAF format wraps a standard TIFF/EXIF block. ShutterCount parses the RAF header to locate the embedded EXIF segment, then reads the Fujifilm MakerNote IFD. The shutter counter is stored as a 32-bit value in tag 0x1438, confirmed across the GFX100S and other current GFX-series bodies.
No. The GFX100S features an electronic shutter mode that bypasses the mechanical curtain. Those exposures do not increment the mechanical shutter counter. For studio work with controlled lighting and no motion, the electronic shutter extends effective shutter life significantly.
Shoot a RAF RAW file, then drop it into shuttercount.app. The count is read from MakerNote tag 0x1438 entirely in your browser — no upload needed.
Fujifilm rates the GFX100S shutter at 150,000 actuations. The successor GFX100S II (2024) increased this to 200,000 actuations with its redesigned BSI sensor and mechanism.
The GFX100S II offers significant improvements: a backside-illuminated sensor for better dynamic range and high-ISO performance, phase-detection AF (replacing contrast-only in the GFX100S), improved video, and a higher 200,000-actuation shutter rating. The original GFX100S commands lower prices and remains fully capable for landscape, studio, and architectural work where its limitations are less relevant.
Medium format shutter replacements typically cost significantly more than full-frame or APS-C. Budget for approximately $400–800 USD for a GFX shutter service at a Fujifilm service centre, depending on your region. This cost should factor into the purchase price if the actuation count is above 100,000.