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Fujifilm X-T3, 4K p60 internal video
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  • Vitaliy_KiselevVitaliy_Kiselev

    The upcoming firmware v 4.0 will be released on October 28th, and it will significantly improve AF performance across the board: boosting overall AF speed, improving AF tracking performance, increasing the hit rate when using Face/Eye AF, and improving low-light autofocus as well.

    Peak AF speed has been cut from 0.06 to just 0.02 seconds, matching the X-T4, and the algorithm for predicting subject motion has been updated, bringing the “expected ‘hit rate'” to “90% or more.” AF tracking performance has been doubled—including Face and Eye Detection tracking—and that low-light autofocus has been improved to work in “near darkness.”

  • Vitaliy_KiselevVitaliy_Kiselev

    New firmware makes autofocusing performance of the X-T3 same as X-T4

    • The fastest AF speed has been improved from 0.06 seconds to 0.02 seconds, equivalent to the performance of the X-T4.
    • The algorithm for predicting subject movements has been updated.
    • 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 with a higher level of accuracy.
    • 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 continuous shooting modes.
    • 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 darkness.

    • The new firmware adds the "Focus Limiter" function, which gives a pre-define specific focus range.

    • When compared with the Firmware Ver.3.30.

    ** When using the FUJINON Lens XF50mmF1.0 R WR.

    Other improvements.

    • The size of the Single AF point can be adjusted during video recording.
    • Photo ratings can be read by third-party software, allowing users to find their favorite pictures quickly.
    • The focus point can be changed by the focus lever during the AE lock.
    • The default setting of the AF-S PRIORITY SELECTION in the RELEASE/FOCUS PRIORITY of the SHOOTING menu is changed to FOCUS from RELEASE.

    https://fujifilm-x.com/en-gb/support/download/firmware/cameras/x-t3/

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