Jar­gon buster

NPhoto - - Gear Zone -

Ring-type ul­tra­sonic

This type of aut­o­fo­cus sys­tem re­lies on two large elec­tro­mag­netic rings built into the bar­rel of the lens.

Ul­tra­sonic mo­tor

Quiet, but not as near-silent as ring-type ul­tra­sonic sys­tems, these small mo­tors re­quire drive shafts and gear­wheels to drive aut­o­fo­cus.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.