26.1MP 4th generation APS-C X-Trans CMOS 4 Sensor and X-Processor 4 Engine 5-Axis In-Body Image Stabilization (IBIS) The new AF algorithm on the X-T4 gives an AF speed of up to 0.02 second; which is the fastest AF speed among mirrorless cameras with an APS-C size sensor. The Face / Eye AF performance has been updated and is now around twice as good at tracking people’s face and eye while shooting in burst mode. The AF system in the X-T4 works down to -6.0EV, which is almost complete darkness. The phase detection AF system is fast and accurate even in these low light conditions. 4K/60P & Full HD/240P Videos The X-T4 features a new Film Simulation mode, “ETERNA Bleach Bypass,” to give both film and stills a more artistic look, with images having reduced saturation and increased contrast. The X-T4 has 63 weather sealed points which gives it the advanced level of dust- and moisture resistance.