This wonderful woman has Parkinson's disease and Alzheimer's disease. This is probably the last photograph of her that the family will have taken as her health is declining rapidly. She would not look at me. Whenever I would move to get a front view, she'd turn her head away. When she smiled, the Parkinson's disease made her face contort into a Joker-like smile. This picture was caught halfway to that smile. Have any of you had to photograph the elderly? Are there any tips you can give?