The phrase describes top-performing lenses manufactured by Canon that present a broad area of view. These lenses are sometimes characterised by brief focal lengths, permitting seize of expansive scenes. An instance could 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 digital camera physique.
The supply of a high-quality optic of this sort is important for photographers specializing in landscapes, structure, astrophotography, and actual property images. The expanded perspective supplied permits capturing extra of the scene inside a single body, conveying a way of scale and immersion. Traditionally, such optics had been more difficult to design and manufacture, resulting in larger prices and potential compromises in picture high quality. Nevertheless, developments in optical engineering have resulted in considerably improved efficiency and wider availability.