Abstract
The focal length of film conversion is strongly appealed also with the video camera or the digital still camera. However, knowing the actual focal length becomes the aid which knows the feature of the camera well. Investigate how fundamental optical technology is guided this time and the characteristic of the lens changes by the difference in the CCD element, and since it employed in the design of the 3X Super Wide-Angle Zoom Lens which developed itnewly, efficiently, report.