I hiked into the Lassen National Forest late in the afternoon to a small lake to try out this newly purchased lens on a D7100. I was pleased with its optical performance in good daylight conditions. Don't ask me to repeat it in inclement weather though, because although sturdily built, it's not weather sealed. I'm looking forward to testing it out on evening urban architecture. My D7100 has limited ISO capability, but longer exposure time on a tripod should make up some ground.