For those really looking for a lens for film and digital SLRs, you search ends now with Canon launching L-series EF 17-40mm f/4L USM ultra-wide-angle zoom lens.

Get amazing picture quality with 77mm filter size and a rotating type zoom system. Catch the minutest detail of smallest of object with 0.9ft of closest focusing distance. The weather resistant lens delivers superior optics with 3 aspherical lens elements and super ultra low dispersion glass element.

EF 17-40mm f/4L USM boasts constant f/4 maximum aperture and a lens of 12 elements in 9 groups. The lens offers strong ring-type USM and manual focus. Get high quality pictures and cherish them lifelong. The 500gm weighing lens has a diameter of 83.5mm making it easy to carry wherever you go.

No words on price yet but the lens is surely the best buy with so many features engulfed in one.