I went out to test out the 30x a little more on a cloudy evening today. I've included both uncropped and cropped views. After some help from Neil it looks like the 35mm equivalent of this system actually comes out closer to 2550mm with the camera on full 3.5x zoom. iso 400, f/4.9, 1/46, exp comp plus 0.7 Nikon CP8400/Swarovski 80HD/30x SW eyepiece Cheangs adaptor with Nikon UR-E15 remote shutter release