Fujinon XF 400mm f/4.5 Field Test Evaluates Handheld Raptor Tracking and Focus Preset Controls
On September 4, 2026, Tom's Guide published an independent hands-on wildlife field test of the Fujinon XF 400mm f/4.5 R LM OIS WR paired with the Fujifilm X-H2S in heavy rain.
On September 4, 2026, Tom's Guide published an independent hands-on wildlife field test of the Fujinon XF 400mm f/4.5 R LM OIS WR paired with the Fujifilm X-H2S in heavy rain. The review verified that the 1,242 g (2.74 lbs) optic provides balanced weight distribution (total 4.19 lbs kit weight) suitable for prolonged handheld tracking without fatigue. The dual-button Focus Preset system allowed instantaneous return to calibrated subject zones, while the linear motor autofocus maintained continuous lock on birds of prey at 30 fps burst shooting up to 1/8,000s shutter speeds. Full weather sealing was confirmed in heavy downpours. Compared to the older XF 100-400mm f/4.5-5.6 zoom (3.1 lbs), the 400mm prime exhibited superior edge rendering, sharper feather texture, and a 2/3-stop light gathering advantage.
Product: Fujinon XF 400mm f/4.5 Field Test Evaluates Handheld Raptor Tracking and Focus Preset Controls