Does shooting video kill your shutter faster? Short answer: it depends.

This is a question I get from photographers who shoot both stills and video. And the answer is more nuanced than you might think — it depends heavily on the camera type and how you use it.

DSLRs: video and the mirror mechanism

On a classic DSLR like a D750 or D800, when you enter Live View mode (which is how you shoot video), the mirror locks up. This is one single shutter actuation — when you enter Live View — and then the shutter stays open for the entire duration of recording.

So a 30-minute video recording on a DSLR adds exactly 2 actuations to the shutter counter: one to open, one to close. The shutter blades themselves don't cycle during video recording. What does wear is the mirror mechanism — because raising and locking the mirror is a mechanical operation that happens every time you engage Live View.

Mirrorless cameras: electronic vs mechanical shutter in video

On the Nikon Z-series, video recording uses the electronic shutter by default. The mechanical shutter blades don't move at all during video — zero mechanical wear. This is one reason why the Z6 and Z7 are particularly good video-hybrid cameras from a longevity standpoint.

Keep this in mind when evaluating a used Z-series camera: a high TotalShutterCount from a heavy video shooter might still mean a nearly-new mechanical shutter. Always check MechanicalShutterCount specifically.

What actually wears in video-heavy cameras

• DSLRs: Mirror mechanism buffer — engages once per Live View session. Can wear out independently of the shutter count.
• DSLRs: Heat — sustained 4K recording generates significant sensor heat, which can affect capacitors and lubricants over thousands of hours.
• Mirrorless: Thermal cycling — repeated heating/cooling cycles from sustained video can affect sensor glass bonding and electronics over many years.