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Lens review

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS

14 July 2014
Arkadiusz Olech

3. Build quality and image stabilization

The following chart presents a comparison between the Fujinon 16–50 mm, its faster brother and other mirrorless rivals designed for APS-C sensors. Still it is difficult to compare those directly because the devices produced by Samsung and Sony, although with identical basic parameters, are Power Zoom (PZ) lenses. They are noticeably smaller and physically lighter than the Fujinon but also less optically complex. The minimum focusing distance, stated in the Fujinon’s specifications and amounting to as much as 0.6 of a meter, also shouldn’t confuse you. The company provide it for the Normal mode adding that in the Macro mode and at a wide angle the lens can focus already from 0.3 of a meter and in the tele photo position – from 0.4 of a meter.

In the photo below the tested lens is positioned between the Fujinon XF 1.4/35 and the XF 18–55 mm f/2.8–4.0 OIS.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


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The Fujinon XC 16–50 mm f/3.5–5.6 OIS starts with a mount made of plastics which surrounds an immobile rear element . The element is positioned on the same level as the mount and encased in such a way that its cross-section, 27x20 mm in size, is almost rectangular. It is a very interesting solution, ensuring that the whole construction is sealed from the side of the mount.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


An immobile ring is the first part of the proper body of the lens, 19 mm wide, with a red square making the alignment with a camera easier, an inscription ’16-50’ and a sticker with the serial number, the name of the lens and info that it was made in China. It is worth mentioning here that the top-of-the-range Fujinon XF series lenses are still produced in Japan.

The biggest part of the lens’s tube is a zoom ring, 24 mm wide, most of its surface covered by fine ribbing. Below the ring you can find focal lengths markings at 16, 23, 35 and 50 mm. The ring works properly well – it is smooth and well-damped in the whole range .

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


Further on you see a ribbed manual focus ring. It is 9 mm wide, without any markings, and its work, based on servo mechanisms, is beyond reproach.

The front element is 38 mm in diameter, surrounded by an inscription with the name and the parameters of the lens; there is also a non-rotating filter thread, 58 mm in diameter. Passing from 16 to 50 mm focal length makes the front element system extend on an uniform tube which seems to be very solid; the size of the lens can increase from 64 to 98 mm.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


When it comes to the optical construction you deal here with 12 elements positioned in 10 groups. The producers boast of using as many as three aspherical elements and one element made of extremely low dispersion glass. Inside you also find an aperture with seven blades which can be closed down to f/22.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


The buyers get just two caps in the box.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization



Optical stabilization

Our optical stabilization test was conducted at 50 mm. We took several dozen photos for every exposure time ranging from 1/60 to 1/2 of a second with the stabilization switched on and off. Then we determined the percentage of blurred photos at every exposure time – the results are presented as a time exposure function graph, expressed in EV, with 0 EV point being the equivalent of the 1/50 of a second.

Fujifilm Fujinon XC 16-50 mm f/3.5-5.6 OIS - Build quality and image stabilization


The maximum distance between the two curves is the measure of the stabilization system efficiency. In this case it amounts to less than 3 EV. It is a good result but I have to say that the best constructions, available on the market, nowadays can exceed 4 EV; even at this price point we happened to find devices which results were placed near 3.5-4.0 EV.