I've never loved this lens--it's convenient, but it's not great in low-light, and isn't spectacularly sharp in general. Would it be worth considering renting a micro 4/3 camera for my still photos since I'm not loving this Tamron lens? Would there be something smaller/lighter/better quality that I could try out? Or should I just stick with what I have and consider a different walkabout lens.
For a water/sports camera, I currently have an Olympus TG-4. This is a great little camera for the beach/under water. We will be doing some active tours: parasailing, cave exploration/swimming, and cliff jumping (some small cliffs). I wonder if the Olympus Tough would be a good choice for these tours, or if a GoPro would be a worthwhile investment. The video quality on the TG-4 is poor (would do a lousy job for parasailing), though it does take decent stills.
TIA for any suggestions.