We read somewhere that fishing is the UK's most popular "participation sport", so now you can join in too. On a full-frame camera such as a 1Ds-series or 5D-series, or even film, this 15mm fish-eye lens produces an image with a 180-degree diagonal field of view. On cameras with smaller APS-C sensors the fisheye effect is reduced but the images are still amusingly distorted. And surprisingly sharp and free from defects such as chromatic aberration too - technical performance isn't the most important aspect of a lens like this, but the Canon 15mm delivers pretty well.

Great fun if you can get the hang of using it properly.