Canon 350D (Rebel XT) with Canon 70-300 IS lens @ 70mm (~105mm) ISO 200 1/100 @ F6.3 .Hand held. The shutter speed is fast enough to ensure the trees are sharp. It wasn't windy. The ISO of 200 was set to minimise noise and still be able to take the picture at 1/100 (I was using an image stabilised lens). I used manual exposure to allow the sky to be seen the way it was. If the camera would have set the exposure the dark trees at the bottom would have reulted in a lot lighter sky. Another tutorial comming up for exposures in difficult lighting conditions?