I guess I'm venting with this thread after disappointing results from my native lenses on my a6000. I was in Yosemite, and along the Pacific Coast last week. Endured the brisk cold night to take some long exposures in near dark with only the Moon as light source. The conditions don't allow the AF to lock onto anything with the Sony and Sigma lenses I was using. The EVF and monitor are useless. DMF/MF mode provided the slidebar to manually set to Infinity. Days later, I review the shots at home to discover nearly all of them aren't sharp. Focus had missed the infinity mark. I elected to shoot with the modern native lenses for their sharpness and for the hope of more keepers. Manual-focus lenses wouldn't have been any easier here. But now I see the limitation of these 'electronic' manual focus lenses. If I had only prepared before hand with my manual-focus lenses with taped marks for Infinity on them....maybe I wouldn't have lost so many shots. Painful to have lost the Yosemite photos! ATM, I can't think of another way around this 'shots in the dark' situation. How do you folks get around this under similar conditions with your mirrorless rigs?