The hood for the RF 28/2.8? I almost always buy the hood for non-L lenses, the exceptions are lenses like the EF 40/2.8 and M22/2. I skip the clear filter for those lenses as well. The flat, screw-on hoods do not seem like they'd be very effective at reducing flare and they don't offer significant protection, either. What the clear filter and/or hood do accomplish is to increase the thickness of what is supposed to be a thin lens. I will be ordering the RF 28/2.8 at some point, but I don't plan on getting the hood. I didn't preorder because I'll be away when it starts shipping, and for this lens I don't think there will be a backorder situation after it launches.