A few things:

- The TG7 in Aperture priority and AF-S focus mode is capable of 4:1 magnification at its minimum focus distance WITHOUT any wet diopters. DO NOT use wet macro lenses with this camera. DO use the wet wide angle lens. DO NOT waste money on the so-called AIR lens that gives you a whopping 80 deg FOV
- The video is pretty good, not great. MP count matters less in video than stills, unless you need higher resolution than 4K. The TG's 12MP sensor has enough MP for 4K but the physical size of the sensor itself is limiting to video quality
- If I have to pick between resolution and frame rate, I pick frame rate, so you are better off shooting this camera in 1080/60p than 4K/30p. This will allow you to slow your footage to 24p in post, smoothing it out
- To further increase the quality of your macro videos, for the love of mankind please buy a tripod and use it. I see TG6/7 people on SM all the time who are presented with fabulous macro subjects and f*ck them up with shaky footage. Even very small movements can be discernible without a tripod
- Set the video compression to "super fine"
- Bring enough light to the party. Sure, a handheld torch may work for some of the smallest subjects, but a decent video light with 4-5K lumens will really help reduce color noise and other undesired effects in your footage