Physically, the lens is lighter and smaller than the Tamron SP 28-80mm 1:3.5~4.2 CF Macro, almost the size of the Sigma Zoom-Gamma 21-35mm 1:3.5~4, both of which I posted earlier.
The zoom range, however, is only equivalent to the S Zuiko Auto-Zoom 35-70mm 1:4 (another post here), but with the ability to shoot in macro mode and the ability to let in more light up front. The widest aperture of 1:2.5 can be used on all focal lengths except when in full zoom at 70mm, where the aperture jumps to 1:3.5.
Using the Macro function is more manual as it requires you to first disengage a locking pin before you can turn the ring to get the macro mode going. Shooting aperture priority means that I do away with the need for another set of fingers on the aperture ring.
I was actually quite pleased with how these test images turned out. Colors are vivid, contrast is good, while bokeh shows a lot of potential. Sharpness, however, is just not here, while precise focusing is made more difficult with an extremely short focus throw of less than a quarter turn from the closest focusing distance of 0.7m to infinity.


































