This is used in excellent condition, Canon EF 17-40mm f4 L USM Lens. Filter ring is 77”. Aperture, auto and manual focus is in good working condition. Autofocus is fast and accurate. Zoom is smooth and travel nice. Glass is clean, no haze or fungus. Some minimal dust may be present inside. Contrast is excellent. Lens includes, original Canon front and rear lens cap, and come from nonsmoking house. Use this on Canon 60D and 6D with good results. Shipping only for USA.