Sometimes Wikipedia has an entry on point:

"Visualization is a central topic in Ansel Adams' writings about photography, where he defines it as "the ability to anticipate a finished image before making the exposure".[2] The term previsualization has been attributed to Minor White who divided visualization into previsualization, referring to visualization while studying the subject; and postvisualization, referring to remembering the visualized image at printing time. However, White himself said that he learned the idea, which he called a "psychological concept" from Ansel Adams and Edward Weston.[3] Though the term previsualization was and continues to be used by many noteworthy photographers, and had become part of the vernacular, it is often regarded as redundant."