Hy­brid AF

Digital Camera World - - CAMERA COLLEGE -

To com­bat the slug­gish speed of con­trast­de­tec­tion AF, cam­era man­u­fac­tur­ers have de­vel­oped hy­brid aut­o­fo­cus sys­tems for Live View. These work in dif­fer­ent ways, but the prin­ci­ple is that a num­ber of phase-de­tec­tion sen­sors are em­bed­ded on the imag­ing sen­sor. The cam­era uses these to get the im­age into the ball­park of be­ing in fo­cus 1, then uses con­trast de­tec­tion to fine-tune its po­si­tion 2.

Imag­ing sen­sor

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.