The present disclosure provides a multi-lens device and method having improved autofocus. A replication status reporter which identifies an ordered list of events corresponding to content items for replication in a content delivery network, and determines a point of progression along a sequence represented by the ordered list of files, allows a management server to avoid computationally expensive endeavors which itemize and transmit lists of every replicated file in the CDN. The pixels of the intermediate layers that are stacked on top of each other are printed with different nozzles to reduce image quality artifacts. The first module comprises a distributed family of collectors in charge of collecting real-time network information. toward the wafer W having undergone the ashing process, are executed.