Popular misconception: “The camera only shot video, the shutter is like new”

When choosing a used camera (especially hybrid cameras like Nikon Z6 II, Panasonic GH5, Sony A7S III), advertisements often there is a phrase: *“The camera was used only for shooting video, the shutter is not worn out!”*.

Is this true from the point of view of the physics of the mechanical shutter and the life of the matrix?

1. Mechanical shutter for video shooting

During video shooting, the mechanical shutter opens **exactly 1 time at the very beginning of the video clip** and closes 1 time after pressing the "Stop" button.

• If the operator recorded 100 long videos of 30 minutes each, the mechanical shutter was triggered only **100 times**!
• In terms of shutter curtain wear, video shooting is almost completely safe.

2. Hidden risks for video cameras: Heating of the matrix and lasers

Although the shutter curtains will remain perfect, a camera actively shooting video is subject to other risks:

1. Thermal degradation of the matrix:When continuously recording 4K/8K video, the readout matrix heats up to +60°C. Prolonged overheating leads to an increase in the number of dead and hot pixels.
2. Dangers of club lasers:At concerts and weddings, laser shows instantly burn out pixels on permanently open matrix.
3. Record button/bayonet wear:From heavy video rigs and checkered body kit.

Comparison table of wear in photos and videos

Component	Intensive photography	Intensive video shooting
Mechanical shutter	High wear (100k–300k frames)	Minimal wear (1k–5k frames)
Matrix thermal load	Low (pulse)	High (constant heating)
Danger of laser beams	Low (shutter closed)	High (sensor open)