The Canon 40mm is the perfect budget Canon lens or backup lens. You can’t beat the price of this thing, and if you shoot with auto focus, that STM makes a big difference. Right now you can save $50 and get your 40mm at B&H Photo Video or Amazon for $150.
So if you’re looking to get an affordable Canon lens, or just need an extra lens for a second or third camera angle, this is a great buy.
Canon 40mm F2.8 STM ($150) at Amazon and B&H