which one lighthouse use meso radial 1125mm focal length lens ?
which one lighthouse use Hyper radial 1330mm focal length lens ?
By the 1920s, high-intensity lamp technology had rendered lenses of this size obsolete.
Quote from: fluorite on November 01, 2017, 03:03:15 PM
which one lighthouse use meso radial 1125mm focal length lens ?
which one lighthouse use Hyper radial 1330mm focal length lens ?
By the 1920s, high-intensity lamp technology had rendered lenses of this size obsolete.
Meso-radial - Farol de Abrolhos, Farol da Ilha Rasa (only two lighthouses)
Hyper-radial - Makapu`u, Cape Race, Nolsoy, Cabo de Sao Vicente, etc.