Fujinon ES 75mm f4.5 Enlarging Lens
These test shots are all taken using a T2i w/ a focusing helicoid between the lens and camera. Extension on most of these shots is somewhere around 50mm. Subject distances were approximately 1.5 feet from the lens. Macro ratio is approximately 1:4.
All shots were handheld and lighted by strobes in umbrellas.
In direct comparison to a Micro Nikkor 55mm the Fujinon did well. The Nikkor was slightly sharper w/ more contrast and that is no surprise. If you have a solid macro lens like a Micro Nikkor 55 f3.5 you should use it. If you choose to shoot macro with this lens you will not be disappointed, though.
ISO 800 - f4