Our B150-B Package is the perfect solution for macro work with a collared macro lens. The B150-B Package includes:
one B150-B macro focusing rail
one B2-LMT "lens mount"
The clamp channel on our B150-B has a fixed orientation suitable for mounting conventional body plates only - plates with dovetails running left/right, not fore/aft. If you're shooting with a macro lens with a tripod collar, or need greater lateral shifting capability, choose this B150B-LMT Package instead. Package includes dedicated mounting platform with integrated clamp (B2-LMT).
The B2-LMT gives sufficient height clearance to allow even the tallest camera bodies to rotate freely without hitting the focus rail, even with an L-plate mounted to the camera. The B2-LMT is completely hollow to provide the needed height without adding much weight. It has two laser-engraved scales; one on either side. The scales can be aligned with the five index marks engraved on both sides of the clamp of the B150-B to give precise lateral positioning. This is a great aid for macro-panorama work as well as general macro work.
Please note that current versions of the B150-B may have different production version designations engraved, such as "B150 D" instead of "B150-B". As of 2005 any rail carrying the designator "B150", with or without additional ID numbers or letters, is a B150-B Macro Focusing Rail.