The firmware update Ver.4.00 from Ver.3.30 incorporates the following issues: The update will improve the autofocusing performance of the X-T3 to the same l evel as the “FUJIFILM X-T4”(X-T4). 1) The fastest AF speed has been improved from 0.06 seconds to 0.02 seconds, e quivalent to the performance of the X-T4. 2) The algorithm for predicting subject movements has been updated. 3) AF tracking performance has been doubled*. Press the shutter button halfway down when a subject is in the focus area to maintain focus on the subject wit h a higher level of accuracy. 4) The Face Tracking / Eye AF performance has been upgraded. The algorithm has been re-written to double* the tracking performance of the Eye AF in continuo us shooting modes. 5) The update allows the camera AF to work in low light levels down to -7EV**, facilitating fast and highly-accurate phase detection AF even in near darknes s. 6) The new firmware adds the “Focus Limiter” function which gives a pre-defi ne specific focus range. * When compared with the Firmware Ver.3.30. ** When using the FUJINON Lens XF50mmF1.0 R WR. Other improvements. 1) The size of the Single AF point can be adjusted during video recording. 2) Photo ratings can be read by third-party software, allowing users to find t heir favorite pictures quickly. 3) The focus point can be changed by the focus lever during AE lock. 4) The default setting of the AF-S PRIORITY SELECTION in the RELEASE/FOCUS PRI ORITY of the SHOOTING menu is changed to FOCUS from RELEASE. Fix of minor bugs. --

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