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by bongodongobob 375 days ago
It's really just trial and error. Set ISO to ~800, open the lens all the way, and fiddle with shutter speed to dial it in. Shutter speed is dependent on your zoom. If you're using a wide angle lens to catch the whole sky, you'll get ~10 sec of exposure before you start to see trails, it you're zoomed in, it may be as low as a half second. If you've dialed in the shutter speed to not get trails and the moon is too bright, lower the ISO. Just take a few test shots, dial it in, and then take 3-5 shots in succession and stack them in software.