The 100mm Macro covers an extremely wide focusing range from infinity to a magnification factor of 0.5X without requiring an attachrnent. When combined with the FD 50-U extension tube, close-up shooting over a magnification range of 0.5X to 1X is possible. Of course, the 100mm Macro can also be used to shoot general photographs due to its focusing range from the extreme of macro setting which is also extends to infinity.