RGBlue screen magnifier
A screen magnifier generally works by making use of the difference between the refractive indexes of air and the lens (glass or acrylic) to enlarge an image. Underwater, however, the difference in the refractive indexes is much smaller, restricting the magnifying effect. RGBlue has developed an image magnifier capable of providing similar magnification even underwater. The RMGF-1 magnifier is shaped like a large 4-inch screen to assure optimal magnification of the image displayed on the camera’s LCD monitor.