Currently the lightest and most compact 180mm macro lens on the market this lens will provide 11 magnification and the two ld elements included in the design of the lens make sure you get the sharpest quality possible an excellent lens for close up work in the field 11 magnification allows for life size image on the negative or slide at a distance of 185 47 cm internal focus the lens neither extends nor contracts physically when focusing all moving elements are contained within the