Significant progress has been made in perovskite light-emitting diodes (PeLEDs) over the past decade, with external quantum efficiencies (EQEs) exceeding 30% for green and red emissions, and 20% for ...
Designed for macro and close-up photography, the SmallRig RM 03 combines a flexible gooseneck arm with a compact LED light and a host of creative accessories. Angela Nicholson finds out how useful it ...