Fujifilm XF10-24 mm F4 R Optical Image Stabiliser Lens

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If this 1,200×900 pixel crop is about 6" (15cm) wide on your screen, then the complete image printed at this same very high magnification would be about 21 × 31" (1.7 × 2.6 feet or 50 × 80 cm). The 10-24mm isn't a dedicated macro lens, offering only 0.16x magnification with a minimum close-focusing range of 24cm (around 10 inches). There is spherochromatism, which can cause color fringes on things that aren't in perfect focus. Spherochromatism is a completely different aberration in a different dimension than lateral color fringes. I use a clear (UV) protective filter instead of a cap so I'm always ready to shoot instantly. I only use a cap when I throw this in a bag with other gear without padding — which is never. The UV filter never gets in the way, and never gets lost, either.

At the 24mm focal length the Fujifilm XF 10-24mm F4 R OIS WR lens has an angle of view of 61.2 degrees. Chromatic AberrationsAbove left: Fuji XF 16mm f1.4 at f16, above right: Fuji XF 10-24mm at 16mm f16. 100% crops from corner of JPEGs Sharpness is great in the center at most focal lengths (sharpness all over suffers some at 24mm), but towards the edges it gets blurry. If you shoot jpeg with Fuji's LMO turned on, you definitely will not notice it as much, but it's still there. Uncorrected it is significant. But stopping down to 5.6 improves things, and by f8, things are pretty solid across the frame (though the edges still lag the middle).

But there are other improvements too. The Optical Image Stabilisation has been improved by 1 stop to -3.5 EV and when combined with XT4 this improves to -6.5 stops – pretty impressive. 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. We found no problems with the way this lens performs physically, and the autofocus is fast, quiet and smooth. The image quality proved more of a mixed bag, however. The lab tests show poor corner sharpness at longer focal lengths, and this became very evident in our real-world tests. The XF 10-24mm F4 R OIS WR is by no means bad in this respect as most ultra-wide zooms start to soften at the edges, but it's clear to see at 24mm, the longest end of the zoom range, that the edges are not as sharp as the center.Fujifilm has improved an already popular lens and now it has a fixed aperture ring with markings and they have weatherproofed the lens as well. These are just snapshots; my real work is in my Gallery. These are all shot hand-held as NORMAL JPGs; no tripods, FINE JPGs or RAW files were used or needed. There are no better lenses to use on the Fuji system at any price. Forget slumming with LEICA or other off-brand lenses; you can't get anything sharper and any other lens won't autofocus or autoexpose or log data or be optimized by the camera's DSP, and no other lens will have a diaphragm that opens and closes automatically as needed for focus and shooting. The Fujifilm XF 10-24mm f/4 is no exception to that expectation as it delivers great images that are gorgeously rendered and sharp.