Nikolausz

If it's for your trout project, I would just leave more cameras rolling with big card and just sor out the footage at the end. They will come back and will ignore small cameras.

Maybe the cheapest option is to try GoPro labs motion detection. (I have no first hand experience with it but I will try it soon)

This is a very nice underwater housing but an overkill in my opinion. To invest such an amount of money I would spend it on a better camera. In my opinion it doesn't make sense to spend 1800 euro to support a 400 euro camera.

Hi Davide, you should use camera traps to catch those shy trouts. I know that low light is a problem with action cameras. Good luck with them

Hi Waterpixel Folks, I'm Marcell from Germany. I was active at the wetpixel as gobiodon but now I just use here my family name "Nikolausz" I'm an underwater hobby videographer mainy focusing on freshwater environments but I'm not against salt water diving to visit colourful coral reefs. My work is posted mainly on youtube under the page: Secrets of the lake https://www.youtube.com/channel/UCCghTY8CNKYo-xFHx8eZCzQ I'm also active on instagram: https://www.instagram.com/secrets_of_the_lake/ I try to contribute to the video discussions in the future. I hope we can create here a friendly and constructive community. Cheers Marcell