Originally posted by DW58 . . . Now start saving for the D FA 100mm Macro WR.
that is a very good lens as is the earlier versions - D FA 100mm F2.8 Macro, FA 100mm F2.8 and F 100mm F2.8 macro - which might be available for less $
" Specifications
The lens covers the full 24x36mm format, not just APS-C. The aperture blades are rounded, delivering a smoother bokeh which is important for a macro lens. However, unlike its predecessor, it has no aperture ring.
The optical design is the tried-and-proven formula of the previous generation D FA 100mm F2.8 Macro lens, which in turn had inherited the optical design from the well-respected FA 100mm F2.8 and F 100mm F2.8 macro lenses introduced in 1991 and 1987, respectively. None of these earlier lenses had rounded aperture blades. . . .
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Pentax-D FA 100mm F2.8 WR Macro Review - Specifications | PentaxForums.com Reviews