Manfrotto Leveling Centre Column for new 055 Contemporary it blocks out extraneous light it blocks out extraneous light and reduces flare and ghosting Size of panel: 200cm x 122cm Locking and unlocking of the half ball is via a turning grip on the bottom of the centre column which can be removed during fi tting of the column to your existing tripod One of the most common problems in still photography and above all video has been resolved by Manfrotto thanks to the use of a 50mm diameter levelling half ball mounted at the top of a tripod centre column so as to make the angle of the top plate independent of the rest of the tripod