Fujifilm XF10-24 mm F4 R Optical Image Stabiliser Lens

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I see no spherochromatism (called color bokeh by hobbyists). This means that out-of-focus highlights remain neutral and don't take on any slight color fringes. Manual focus is fly-by-wire – rather than being mechanically coupled, however there’s barely any lag between moving the ring and the lens responding. Fujinon XF 10-24mm F4 R OIS WR: Image Quality

Distortion is invisible, at least as shot as JPGs on my Fuji X-T1, which for all I know is correcting it automatically.Above left: Fuji XF 16mm f1.4 at f4, above right: Fuji XF 10-24mm at 16mm f4. 100% crops from centre of JPEGs I do find it strange that a lens that’s great for shooting in the outdoors is not fully weather-sealed – perhaps in late 2013, Fuji hadn’t perfected that tech yet. Above left: Fuji XF 10-24mm at 10mm (15mm equiv), above right: Fuji XF 10-24mm at 24mm (36mm equiv) I used the Fujifilm 10-24mm f4 R OIS WR with the Fujifilm X-T4. Fujifilm 10-24mm F4 R OIS WR Tech Specs

Offers an extra stop of light-gathering ability, but corners are much softer at ƒ/2.8; at ƒ/4, the lenses are optically very similar.

While the latter way of seeing the aperture is still valid, for the new XF 10-24mm F4 R OIS WR version, Fuji have made the much more sensible decision to also add the actual aperture markings to the lens barrel, bringing it in line with most of the other X-series lenses that have a physical aperture ring. It also has a ridged, rubberised grip band that's slightly more rubberised than the hard plastic focusing ring.