As an eager photographer, you may occasionally wish to frame a shot on an especially intimate scale. That's why Canon developed the 250D conversion lens with PowerShot in mind. Canon close-up lenses are for quick and easy close-up photography. This lens is screwed on to the front of a lens like a filter. 250D lens is designed for extreme close-ups, allowing shots as near as 4 inches (10 cm)! This lens uses two achromatic elements to correct chromatic aberrations. It is recommended for lenses with a focal length from 38mm to 135mm.