Canon EF 17-40mm f4 L USM Lens #560. It's listed as used but it's really barely used - I've had it in my kit as a backup lens but have maybe only used it on 2-3 shoots. Goes for $799 on B&H new so offering around 40% off here. It's a great lens I just tend to only use my 50mm :) Selling because I'd rather reinvest in other gear.