The DJI Inspire 3's Zenmuse X9-8K Air camera has dual native ISO, and the two native values depend on frame rate. At 30fps or lower, the native ISOs are EI 800 and 4000, with 14+ stops of dynamic range. Above 30fps, they drop to EI 320 and 1600, with 12+ stops. DJI's manual lists the video EI range as 200 to 6400, and photo ISO as 100 to 25600.
The numbers at a glance
| Recording | Native ISOs | Dynamic range |
|---|---|---|
| 30fps or lower (24, 25, 30) | EI 800 / 4000 | 14+ stops |
| Above 30fps (slow motion) | EI 320 / 1600 | 12+ stops |
All values are from DJI's Inspire 3 user manual. Video exposure is set as EI; photos use ISO.
What dual native ISO means
A dual native ISO sensor has two optimized gain circuits. Each native value is a base where the sensor gives its cleanest image and widest dynamic range. Settings between or far beyond them push the image up or down from the nearest base, which costs some highlight or shadow range.
In practice:
- Daylight and bright scenes: use the low native value, EI 800 at 24 or 25fps.
- Dusk, night and interiors: switch to the high native value, EI 4000, rather than pushing EI 800 up.
- High frame rates: at 48, 60 or 120fps the bases become 320 and 1600, so plan on about 1.3 stops more light or a wider aperture for the same exposure.
Choosing your base on set
- Pick the frame rate first. It decides which pair of native values you get.
- Set the EI to one of the two native values for that frame rate.
- Control exposure with aperture and shutter. The DL lenses run from f/2.8 (and f/1.8 on the DL 75mm), and the shutter can be set by speed or angle.
- Use ND filters in bright light so you can stay at native EI and keep a 180° shutter.
- Check exposure with the camera's tools on the RC Plus rather than by eye on a bright screen.
On the RC Plus, DJI's default is that pressing L1 activates the scroll wheel to adjust EI or ISO, so the camera operator can change it without going through menus.
Why frame rate changes the native ISO
DJI doesn't explain the internal reason in its manual. What matters for shooting is the result: at 30fps or lower the X9-8K Air delivers its full 14+ stops, and above 30fps you trade about two stops of dynamic range for speed. For the widest latitude on hero shots, film at 24 or 25fps. Save 4K/120 S&Q or 8K/75 for moments that need slow motion.
Matching other cameras
The X9-8K Air shares its full-frame design lineage with the Zenmuse X9 on DJI's Ronin 4D, and crews often use both together. Note the Ronin 4D's X9-8K uses a different scheme: 320/1600 by default and 800/4000 with Dynamic Range Expansion on, at 30fps or lower in full frame. Set both cameras to the same EI and color settings for easier matching in the grade.
For RAW codecs, read the Inspire 3 RAW license guide. For lens apertures, see Inspire 3 lenses. Full specs are in the Inspire 3 guide, and you can request a quote on the DJI Inspire 3.
Related guides
- What is the DJI Mavic 3 native ISO? Is it dual native ISO?
- DJI Ronin 4D native ISO explained (6K and 8K)
- Discontinued DJI drones: Phantom, Spark, Inspire and their support status
- DJI Inspire 3 lens not detected: how to fix it
- DJI Inspire 3 lenses: every DL mount option
- DJI Inspire 3 RAW license: ProRes RAW and CinemaDNG
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