A while back, probably on photo.net, I read a thread/post that referred to an attachable lens collar/tripod mount for 'Blad lenses. I know it exists/existed, as I found it listed on either Hasselblad's global or German-language website late last year. However, to find it one needed to know the actual product name/catalog number -- does anyone know what that would be (it is not listed in the 2005 H system catalog)? As to what this attachment is: it is a collar/tripod foot assembly that attaches to (cl&s onto?) the lens barrel. 'Blad likely designed it to facilitate center-of-gravity tripod mounting of its telephoto lenses that lacked tripod collars of their own. I need it for a similar purpose when using a 180 w/2XE converter combo (quite front heavy) on a tripod.