Hi! I have heard that you should ALWAYS use a hood - it will save your lens if you bump things. What do you do in dim light situations though? It would seem that walking around inside a dim church for instance would be a good time to have that protection (I could just see myself walking into something with the lens right out in front...) but since there is no glare, why use it? Not to mention, won't the hood slightly reduce the amount of light coming in? Or is it too negligible to notice?