Suitable for full frame and cropped sensor cameras the new extremely compact sigma 105mm f28 ex dg os hsm macro offers advanced close up performance with true macro 11 magnification the hsm hyper sonic motor ensures quiet fast autofocus as well as full time manual focussing capabilities sigmas os optical stabilizer allows close up hand held focussing whilst the 9 bladed aperture renders out of focus backgrounds beautifully sld special low dispersion technology provides correction f