Yongnuo was once known for making extremely affordable speedlights, and while they still do that, they have also moved into making lenses in recent years. One such example is the YN 50mm f/1.8 DA DSM PRO for Fujifilm X Series cameras, which offers very impressive performance at a reasonable price, making it a great option for portrait and wedding photographers. This excellent video review takes a look at the lens and the sort of performance and image quality you can expect from the lens in practice.