Cam cylinder Focal length adjustment lris servo drive Ball bearing shaft V Fig. 2.4 .9 length ... 2.4.3 Schneider Variogon f/2 8, 10-40 mm zoom lens with moving parts mounted in a barrel. Manual operation of a radial control moves a pin which is engaged in a cam and provides the focal length adjustment. Cam cylinder Pin foranbsp;...
|Title||:||Lens mechanism technology|
|Author||:||Douglas Favel Horne|