The used market is always full of lenses, and given how well many photographers take care of their gear, you can often save a fair bit of money and still get a quality lens by purchasing preowned. There are a few things you should check before you agree to buy that lens you are eyeing, though, and this quick and helpful video tutorial will take you through them all to make sure you are not wasting your money.
[ Read More ](Originally posted by Alex Cooke)