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I tried to photograph the Northern Lights last night with 60D, kit lens. I had never tried this before. I did figure out the M mode and took some pictures with nice green lights on a 10, 15, 20 and 30 second exposure. I tried the max apertures and a few other settings in the same range-low end. My question with this lens is: what would be a good approach? I noticed I needed to shut off the autofocus or the picture would not be taken, my manual focus was out of focus as I really couldn't see through the camera viewfinder in the dark. Can I use autofocus? And how do I get the camera to take the picture using autofocus? What should I change in my approach?