The phrase describes top-performing lenses manufactured by Canon that present a broad area of view. These lenses are sometimes characterised by quick focal lengths, permitting seize of expansive scenes. An instance can be a Canon lens with a focal size of 24mm or much less, identified for its distinctive picture high quality and minimal distortion when used on a appropriate Canon digicam physique.
The supply of a high-quality optic of this sort is significant for photographers specializing in landscapes, structure, astrophotography, and actual property images. The expanded perspective provided permits capturing extra of the scene inside a single body, conveying a way of scale and immersion. Traditionally, such optics have been more difficult to design and manufacture, resulting in increased prices and potential compromises in picture high quality. Nevertheless, developments in optical engineering have resulted in considerably improved efficiency and wider availability.