He has multiple cameras, some of them mini ones for attaching to models and putting them underwater: https://brickexperimentchannel.wordpress.com/2022/09/12/my

He has multiple cameras, some of them mini ones for attaching to models and putting them underwater: https://brickexperimentchannel.wordpress.com/2022/09/12/my-cameras/ https://brickexperimentchannel.wordpress.com/2022/09/12/my-c... He's also in Finland, so the cost of gear might not be as cheap as in the US.