Hybrid Autofocus
In a hybrid autofocus system, focus is achieved by combining two or more methods, such as:
- Active and passive methods.
- Phase detection and contrast measurement.
The double effort is typically used to speed up and improve AF function. In July, 2010, Fujifilm announced a compact camera, the F300EXR, which included a hybrid autofocus system consisting of both phase-detection and contrast-based elements. The sensors implementing the phase-detection AF in this camera are integrated into the camera's Super CCD EXR. Currently it is used by Fujifilm FinePix Series, Ricoh, Nikon 1 series and Canon EOS 650D/Rebel T4i.
Read more about this topic: Autofocus