Being that this is supposed to be a blog about motorcycles as well as genealogy I'd thought I'd give a quick tip, especially for this time of year.
This time of year, at least for me in these middle latitudes, the sun can be at some really bad angles, even with sunglasses the glare can get to you and make seeing the road a real pain. A very quick, and cheap, way of combating this is to place a strip of black electric tape along the very bottom of your face shield. Then, when the sun starts hitting that wrong spot simply lift the shield to put the tape in front of the sun.
Granted, this is an old school way of taking care of the problem, but it does work. My Nolan helmet has a sun visor, but even that doesn't cut the glare down enough. Don't forget to have some sort of eye protection as well if the face shield is up.