The Fujifilm X-T20

2.4 FOCUSING WITH THE X-T20

The X-T20 features a hybrid autofocus system that combines CDAF and PDAF. CDAF, PDAF, hybrid AF? It can be quite confusing.

• CDAF means Contrast Detection AutoFocus and is the current standard in mirrorless cameras. CDAF is available throughout the entire sensor area (91 or 325 AF frames in Single Point mode or 91 AF frames in Zone and Wide/Tracking mode). It works quite precisely, but is not particularly fast.
• PDAF means Phase Detection AutoFocus and is the current standard in DSLRs. Since the X-T20 is mirrorless, its PDAF works directly on the sensor, but is only available throughout the 49 (respectively 169) central AF frames. PDAF is fast and particularly good at tracking moving subjects. It can predict where a ...