This lens is in full working order. Walch Optics have a repair workshop on site so we can carefully check each second hand item we sell. We test lenses for focus accuracy and smoothness in autofocus and manual focus mode. We check zoom function. We carefully test the aperture for correct exposure over the entire aperture range. We reject any lenses with the slightest sign of fungus. We allow a bit of dust on the internal elements for older models, but there can not be any marks or scratches on the front or rear elements. We accept a few scuff marks on the external barrel. We make sure that the filter thread is undamaged. Walch Optics offer a full 3 month warranty on our second hand lenses. Please contact us if you have any questions about this particular lens. For the older lenses, please make sure you are aware of which functions are compatible with your camera, and contact us if you are not sure. We want to help you get the most out of your lens.