Conclusion

The Fujifilm GF 32-64mm f4 R LM WR is a great zoom lens for the fledgling medium-format system, offering enough versatility and quality to deserve a place in every GFX shooter's camera bag. 

The GF 32-64mm is a sharp lens throughout the zoom and aperture range, exhibits almost no chromatic aberrations, has negligible distortion and is capable of producing some very nice bokeh despite only having an f/4 maximum aperture. Vignetting at wide-open apertures is the only real optical issue of note, although stopping down to f/8 solves the problem altogether. 

The high-speed linear AF motor makes it suitable for everything from wide-angle landscapes to portraiture, and as with Fujifilm's X-series lenses, build quality is excellent, with the traditional aperture ring being very welcome. Manual focusing is a veritable pleasure thanks to the massive, well-damped focusing ring and the on-camera focusing aids, which should please anyone predominantly considering this lens for its wide-angle capabilities.

So although 25-51mm in 35mm terms sounds at first like rather a strange focal range, the Fujifilm GF 32-64mm f4 R LM WR proves itself to be a very versatile, go-to lens that delivers excellent images. If we had to choose just one lens for the GFX 50S camera, it would probably be this one... 

Ratings (out of 5)
Design	4
Features	4.5
Ease-of-use	4.5
Image quality	4.5
Value for money	4