Should you? I just got my 50 F1.4 MC ROKKOR-X PG today and I believe it never came with a hood. There's no attachment point on the lens for a standard hood either however the lens is threaded to except a filter. I know you can get threaded hoods, I have one on my Nikkor 50mm. I was just wondering, are lenses in their design meant to have or not have a hood? If they are not designed to use one, what's the harm in using one? Any benefit?