Toy lens fisheye lens series pentax q unique lens mount pentax q lens speed 71 focal length 63 mm suitable for sensor type aps c construction prime lens area of use action photography landscape photography focus manual focus focal length equivalent to 35mm camera 35 mm lens type aspherical lens construction groupselements 34 minimum aperture 22 max aperture 71 coating multicoating mc length 25 mm lens diameter 406 weight 21 g incl