The WCL achieves an accurate unattended zoom from a “flat” image format of 1.85:1 to a “scope” image format of 2.39:1. At the same time, it maintains the full resolution of the source data. Other possible solutions are either impractical, cost-prohibitive or simply do not exist.
The WCL simply mounts in front of a standard prime lens and expands the image just like a zoom of 1.26X, expanding the image to effectively decrease the throw ratio. For example, it converts the zoom range of our 2.2-3.0 lens to 1.75-2.38. In essence, the WCL is a focal length adapter.