I know this is a lot over my head but I love to see how the steps to a better understanding of the science and practical photography pushes me to the net level. I do know that it really doesn’t matter to me if I use a mac or pc. I have most of the equipment I want for making images. Having been in business for over forty years, you never buy equipment unless you can make it pay for itself. For most of us editing programs seem to be brand envy. I don’t use Photo Shop that often since Corel Draw is my main graphic program and like those that learn on one system you just never try anything else. Being a Canon user for many years I love all the products that I have owned. In most of my work I shoot in manual mode but have learned how to lie to the camera and make it do things it shouldn’t do. You hit on many of the points for camera care. I have had my old Rebel in the deserts and canyons of the south west and the camera was fine but one lens sure got nailed. hahaha I am hooked on your Geek Week now. Keep up the great work