Sony Nex-7/Sigma 19mm 2.8 30" exposure/3200ISO/Badwater Basin Natl. Park A cool 107 degree ground temp at 10:45 PM with oven like breeze blowin on my face. As soon as I'm done setting up and focused properly, small dark clouds rolled right in front of my shot. Overall,IHMO the nex-7 with the EVF is horrible under very low light conditions. My way of focusing with the Sigma (which does not have an infinity stop) is focus on my girlfriends flashlight when she was about 35ft away with focus peaking. Locked in the focus and tried my best to compose the shot with the horizon.