Canon 17-40mm f4 L USM

Canon 17-40mm Second Hand

Features CANON 17-40mm Second Hand

Optical performance superior throughout the zoom range.

Fastest AF speed in its class (similar to EF 16-35mm f/2.8L USM lens)*

Highly resistant to dust and moisture

Minimum focusing distance of 28 cm at all focal lengths *from January 2003

The ultra-wide lens for EOS DSLRs

EF 17-40mm f/4 L USM is an ultra-wide-angle CANON EF zoom lens designed for professional and non-professional EOS SLR camera users with advanced knowledge.

Standard zoom lens for digital EOS SLR cameras

While it is an excellent lens when used with an analogue SLR camera, the EF 17-40mm f/4 L USM lens is especially recommended for digital SLR cameras that have an image sensor smaller than the 35mm format. In fact, in these digital SLR cameras these focal lengths can offer an angle of view roughly equivalent to what a 28 to 70mm lens uses on a 35mm camera, making it the ideal standard zoom lens.

Optical performance superior

The CANON 17-40mm Second Hand model has 12 lens elements organized into 9 groups. The Super Spectra coating of the elements ensures an excellent color balance, as well as minimizing flare and shadows. To provide superior image quality in a zoom range of 17 to 40mm, the lens uses three aspherical elements of two different types, while using Super UD (Ultra-low Dispersion=Ultra-low Dispersion) glass to avoid chromatic aberrations that often decrease the clarity of the edges of the subject.

Comprehensive set of world-class features

The minimum focusing distance is only 28mm throughout the zoom range.

The autofocus has quiet and fast operation thanks to the central processing unit that uses an improved AF algorithm. If you wish, you can override AF mode and use manual focus.

The circular aperture of the EF 17-400mm f/4 L USM lens, controlled by an electromagnetic aperture, can bring a more attractive look to out-of-focus background areas of an image.

The front of the lens does not rotate while focusing. For example, this means that the polarizing filters continue to work perfectly while zooming in and out. On the back of the lens there is a drop-in gelatin filter holder.

Due to its high resistance to moisture and dust, the EF 17-40mm f/4 L USM lens is particularly recommended for use in harsh environmental conditions. Lead-free glass is used to protect the environment throughout the construction.