CCTV Design Lens Calculator 1.0 - a new advanced free Lens Calculator for CCTV Designers CCTV Design Lens Calculator offers all features of other standard Lens calculators and in addition several new more effective tools: Calculating camera field of view in 3D, taking into account camera height and tilt angle. Calculating spatial resolution (pixel density) at any distances or calculating distances of specified spatial resolutions, Simulating images from cameras using prepared photos or pictures. Simulating field of view and resolution of megapixel cameras up to hundreds of megapixels using Picture-in-Picture technology. The free Lens Calculator is based on professional CCTV Design software - VideoCAD.
Source: http://www.cctvcad.com