Standard zoom lenses with f/2.8 apertures are some of the most popular workhorses out there, as they cover many commonly used focal lengths and offer enough light-gathering power to handle a wide range of scenarios and needs. However, such lenses can be quite expensive, which is why the Tamron 17-70mm f/2.8 Di III-A VC RXD, which comes in at $799, is such an intriguing option. This excellent video review takes a look at the lens and if its performance and image quality can outpace its bargain price tag.