DSC's design group worked with Steve Lucas of Plus 8 Video on the design of this unique backfocus pattern.
The decreasing radii of the spiral helps to identify what has been described as a visual "pop" at the precise point of optimum focus.
The FHR pattern incorporates all the benefits of the FH pattern plus corner resolution wedges up to 1600 TV LPPH.
In addition to 16:9 (1.78) and 4:3 framing bowties, both FiddleHead patterns include motion picture framing lines for 2.35, 1,85 and 90% of 1.85.