... important job of deformation process principle:Due to the longitudinal compression lens in vertical direction "extrusion" image, it ... display.RPG H - 1 lensRPG H - 1 lens acceptable to spot diameter cannot exceed 1.5 "high x2. ... not suitable for use RPG H - 1 lens, if want to use, must be in high projection than ... adversaries.We suggest that, if want to use RPG H - 1 lens get width, original 16x9 images of ...