Staples offers the Canon EF 70-300mm f/4-5.6 IS USM Telephoto Zoom Lens, model no. 0345B002, for $589.99. Coupon code "69705" cuts it to $349.99. Plus, Staples Rewards members receive $17.50 in Staples Rewards. (Not a member? Click here to sign up for free.) With free shipping, and assuming you'll spend the credit, that's the lowest total price we could find by $44. It features improved Image Stabilizer Technology compared to the original Canon EF 75-300mm IS zoom lens, as well as a lighter weight and smaller diameter. Deal ends May 4.