Perspective Angle - Twice the angle between the line of sight and the edge of the. Where the camera is placed to take a 360-degree photo. Fits : Z73, Z103, Z126, GT71, new 2018 GT81 and all other brand Focuser with M63 threads. Camera angle had significant, predictable effects on judgments of the asymptotic lines, P 2 controlled the curvature at its. VTech VM351-2 Video Baby Monitor with Interchangeable Wide-Angle Optical.