Fujifilm revitalized the popularity of medium format with their GFX line of mirrorless cameras, which offer impressive sets of features traditionally not seen in cameras with larger sensors in tandem with highly competitive prices. For GFX users looking for a wide angle zoom, there is the new GF 20-35mm f/4 R WR, and this great video review takes a look at the lens and the sort of image quality and performance you can expect from it in practice.