This photo of a Green Heron is not a great one but I am including it to show the remarkable capability of modern telephoto lenses. Non-photographers, please forgive the technical jargon this one time. I have a 200-400 mm lens with a feature called Image Stabilization. When you press the shutter button this feature attempts to cancel out any movement of the lens. It’s almost like it has a tiny gyroscope helping to stabilize the camera. This is a great help in getting sharp images when you are in a low light situation. This bird was at the back end of a mangrove pool at Ding Darling. It was early in the morning and the bird was in the shadows. My camera, with this lens on it, weighs 10.5 pounds and I was hand-holding it (no tripod). I set the shutter speed at 1/15th of a second and still got a pretty sharp image.