Abe's of Maine offers the Canon EF 40mm f/2.8 STM Pancake Camera Lens, model no. 6310B002, for $199.95. Coupon code "DEALNEWS12" drops it to $187.95. With free shipping, it's the lowest total price we could find by $11. This 0.29-lb. lens is for use with most Canon SLR cameras. Blow your own mind by taking pictures of flapjacks with this pancake lens — just remember which is which when pouring your syrup.