Tamron 90mm f2.5 52B

     This review is mandatory, I suppose.   If you are not aware of this lens' legendary status you must be new to this world.   Having said that, it's a legend for good reason.    

     Macro performance is top notch at maximum magnification of 1:2.  If you need 1:1 you must use a matched extension tube.  

     Performance at distance is top notch as well.   This lens is a great general purpose lens.   It's soft bokeh makes it a first choice for portraiture.  

     Tack sharp.   Yes it is.   From 2.5 up it is tack sharp.  If you are picky you may see a slight softening in contrast at f2.5.

     Fringing and CA is barely noticeable at close inspection.  Tamron's BBAR coating is as good as it gets.