I have the Oly 60mm Macro....Great lens but working distance is not enough. Oly/Panny don't do anything longer i.e. 200-300, If they did it would cost an arm and a leg. So I'm thinking of legacy lenses or other, such as the Sigma (Nikon AF) 105mm F2.8 EX DG Macro. http://www.photozone.de/Reviews/302...-macro-dg-nikon-mount-lab-test-report--review Assumptions..... Although AF it would work in MF mode via an adaptor with my E-M1. The lens incorporates a Dual-Focus (DF) mechanism which allows to decouple the focus ring from the focusing gear by pulling/pushing it back and forth. In "manual focus" mode the camera's AF screw drive remains coupled so unless you disable AF on the camera you will end with a rotating focus ring. On the D200 the AF speed is fine for a macro lens but you should take advantage of the focus limiter when using the lens for non-macro applications in order to avoid focus hunting throughout the focus range. The equivalent focal length in M4/3 would be..105 x 1.5 (Nikon CF) = 157.5 x 2 (M4/3 CF) = 315mm. Which adaptor would I require please...Nikon G to M4/3. Comments please and a check on my maths would be welcome.