Pentax-D FA 100mm F2.8 WR Macro Review
Macro Capabilities
This is a true macro lens with a flat field of focus and which focuses all the way down to life-size (1:1) magnification. Next to the distance scale it has a scale showing the magnification. Close-up lenses which screw into the filter ring are the best option for achieving magnification beyond 1:1, since bellows and extension tubes cannot be used: there is no way to set the aperture with bellows and extension tubes since the lens has no aperture ring.
