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Message: <blockquote data-quote="gqtuazon" data-source="post: 152117" data-attributes="member: 6573">I am at the stage with my photography that sharpness is not everything about a lens.  Dxo emphasizes their results with lens sharpness but does not factor in bokeh, AF speed, bokeh, vignette, CA, etc.  I do my research very well and if possible try the lens out before purchasing one.  Since you already have the Nikon 105mm f2.8VR, why bother looking for comparisson with other lenses?  The Sigma 150mm f2.8 has been reported a very good macro lens.  Great distance to keep you further away from bugs but it is also bigger and heavier.   Some prefers it and some don't.</blockquote>