Canon EF 17-40mm f4L Wideangle 4G AF Nikkor is a

4G AF Nikkor is a modern

33x anamorphic squeeze with most lenses (see the second image for SLR Magic's recommended lenses and apertures)

Focusing action is smooth though slightly stiffer than usual- a boon for macro work

and it really feels like a classic Leica camera

) f4 constant aperture throughout its range

Canon EF 17-40mm f4L Wideangle 4G AF Nikkor is aThe Canon EF 17 40mm f4L is a high quality full frame wide angle lens for the Canon EF mount. Relatively small and lightweight (relatively) for an ultrawide zoom, this lens also has a pretty respectable f4 constant aperture throughout its zoom range. In excellent condition, with original hood.