Adjust camera for lower light. Shoot against a white background to see them just before 2d Contact and just after 3d Contact. Higher resolution cameras can capture coronal filaments and polar brushes. Lower resolution instruments can show the shape of the corona. I recommend disabling Auto-focus if shooting A Phenomena.
Some cameras fail to stay focused on objects in the sky.
Manual focus setting should be used. Auto-exposure features can allow some fun. 3d contact when you have to put it back on. Excessive blooming can damage the camera if not done timely. Watch for 3d contact to capture shadow leaving.