HDP-5072EX High Definition Semi-Fisheye conversion Lens 0.5x The model HDP-5072EX is a 0.5x semi-fish eye conversion lens particularly designed for use with the High Definition large aperture camera lens, and it has a resolution power of 630 lines/mm at center (MTF30%). With the HDP-5072EX lens mounted on a High Definition camera"s lens, it broadens 100% more the field of view than the original widest angle of view. In shooting a subject of short distance with HDP-5072EX lens on, it creates an interesting image of semi-fisheye effect, taking an advantage of the -31% distortion nature, but it takes a panoramic picture of 0.5x wide angle coverage without bothering the distortion image, when taken a distant subject.In using the appropriate adapter rings (sold separately), the *HDP-5072EX lens will be compatible with 52mm, 55mm, 58mm, 62mm, 67mm, 77mm and 82mm filter sizes. The lens goes direct in the camera"s filter size of 72mm.