Is there a lens that does more than 3 times enlargement with the Prism stand?
No, but the range of enlargement can be increased by simply swiveling the upper assembly of the stand over the floor or lower surface. The Prism Stand is capable of 7 times enlargement onto the floor (from a 36″ table). When doing floor projection, please make sure the table is sturdy enough to hold the projector in this position.