field of view vs looker

field of view

noun
  • The angular extent of what can be seen, either with the eye or with an optical instrument or camera. 

looker

noun
  • One that looks or is actively looking; a watcher; an observer. 

  • A person who pretends to be interested in purchasing something but has no intention of doing so. 

  • Someone or something who is remarkably good-looking. 

  • One having a specific look or appearance. 

How often have the words field of view and looker occurred in a corpus of books? (source: Google Ngram Viewer )