I stopped in at Johnston Canyon yesterday afternoon on my way back home through Canada's Banff National Park. It was beautiful and uncrowded if a little slippery and dangerous! Here's one of the shots that I got of the lower falls, which I'm pretty pleased with. Taken with K5, DA15 Limited at f11, 1/4s, iso100 with circular polarizer (mainly as neutral density filter).
But I couldn't escape without the river god commanding an offering, which he/she got when I dropped my 49mm circular polarizer down onto the snow below the overhanging walkway when switching over to the DA21. Shewt. I could see it right there six feet beneath my reach, but there was no possible way to get at it. So I sulked away. Better than a lens, I guess. Primes are nice. But can be fumbly.