I've done a search and can't find this, and my camera is at my office so I can't measure it. Does anybody happen to know the outer diameter of the lens on the XH A1?

Hi Bill, I guess it depends on how you measure it... I'm getting 76mm for the bayonet diameter and 88mm for the barrel diameter (excluding the IAF housing). Filter thread diameter is of course 72mm but I bet you knew that already. Hope this helps,

Thanks. I should have said I'm interested in one of those Lee clamp-on bellows slotted lens hoods. Trying to figure out if it will fit and with what adapter.

I think the IAF housing is going to ruin any chance of using a clamp-on directly on the lens barrel. If there's a way to add one via bayonet, that might be the better way to go...