So I remember reading about an auto focus system that can be used with any lens system even on extremely long lenses, but I can't seem to find the thread anywhere on here. If I remember correctly it worked with conjunction with cine-tape or something like it and would hold the focus as long as the subject was within a specified area. I may be remembering this wrong but I know that I read about it somewhere and wanted to see if I could ply the vast knowledge of this forum to refresh my memory. Thanks in advance.
1st AC / Junior Camera Operator