I didn't try to crop this shot yesterday and it is sharp enough to get a nice crop in. The trick is a short exposure, use a tripod and since I didn't have a cable release for the shutter, I used my hand to block the light for a moment to let the camera settle down before letting light hit the sensor. Fun stuff. ISO 2000, f4.5 at somewhat less than 2.5 seconds. 70-200mm at 200mm on tripod.
