Nice video - we've visited the Barnes wetland centre a couple of times - it's on the Beverley Brook which issues near me
I use a Fuji E550 that my daughter discarded for my videos [posted in profusion on YouTube] and love the cam. I do closeups with a supplementary lens handheld over the cam lens - even a pair of reading glasses works at a pinch - try
YouTube - video close-ups - try a spectacle lens before camera! 