I'm giving this three stars, for the money, it is worth it. Afterall, if you purchase a name brand lens, they are far more expensive. I don't care for the paper that calls itself a manual. It takes some time to figure out how to properly use the lens and I could not find much support on the internet. I would recommend it to someone that knows a bit about photography, but with practice this lens takes great pictures. You will need a heavy duty tripod to support the lens, all low light photography will require one.