This is a video showing the practical use of a iris for your night vision as well as video of what it looks like while using it.
Iris and sacrificial lens - Amazon Affiliate Link
[ Ссылка ]
![](https://i.ytimg.com/vi/UTHx31Sjo-k/mqdefault.jpg)
This is a video showing the practical use of a iris for your night vision as well as video of what it looks like while using it.
Iris and sacrificial lens - Amazon Affiliate Link
[ Ссылка ]