Lens decisions

Thorpe, Larry
September 2008
Broadcast Engineering (World Edition);Sep2008, Vol. 50 Issue 9, p22
The article discusses the key factors to consider to select the correct auto-focus system for high-definition television (HDTV) field and studio lenses. It examines the phase detection approach to auto-focus, secondary image registration phase detection, implementation of the auto-focus sensing system, and array sensors for real-time detection of optical focus.


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