vsCalc The Video Surveillance Calculator Creativity is allowing yourself to make mistakes. Art is knowing which ones to keep. -- Scott Adams       vsCalc Includes all single manufacturer versions rolled into one. Supporting 417 cameras from the following manufacturers: Arecont Vision Axis Panasonic Pelco Sony Easily select the correct camera and lens combination for your video surveillance project. Instantly calculate: Field of View Angle of View Focal Length Based on the: Object of Interest Visual Acuity Index Camera Target Distance   Visual Acuity Is the acuteness or clearness of vision. The Gish Index is a measure of visual acuity in video surveillance whose value varies from 0, an unusable image, to 1 a perfect image.   vsCalc Is intuitive and easy to use. Just identify the picture quality you want and work backwards to the camera.   vsCalc Is accurate. Our calculations are based on the sensor unit cell size in µm. A µm is one-millionth of a meter. To put this into perspective, the diameter of human hair varies from 17 to 180 µm.   vsCalc Updates are always free. This includes new camera models and new camera manufacturers.   vsCalc Is a universal app. This means you can install it on all of you Apple devices for the price of one. iPad, iPhone and iPod touch