Canon EF 17-40mm f/4L USM

EF 17-40mm f/4L USM

The EF 17-40mm f/4L USM is an ultra wide-angle zoom lens that offers excellent image quality and a constant maximum aperture. Its compact, lightweight body makes it an ideal travelling companion.

Edut

  • Superb optical performance throughout the zoom range
  • Fast autofocus speed
  • Highly resistant to dust and moisture
  • 28cm minimum focusing distance at all focal lengths

Yksityiskohtaiset ominaisuudet

Tutustu tarkemmin tuotteeseen Canon EF 17-40mm f/4L USM

Ultra-wide or standard zoom


The EF 17-40mm f/4L USM acts as an ultra-wide angle zoom on film or full-frame digital EOS cameras. On DSLRs equipped with APS-C sized sensors it acts as a standard zoom, giving an angle of view equivalent to a 28-70mm lens on a full-frame camera.

Close focusing


Minimum focusing distance is just 28cm throughout the entire zoom range.

Superior optical performance


The EF17-40mm f/4L USM has 12 lens elements arranged in nine groups. Super Spectra coating ensures excellent colour balance and minimises ghosting and flare. To provide superb image quality over the complete 17-40mm zoom range the lens uses three aspheric elements. Super UD (Ultra-low Dispersion) glass prevents chromatic aberrations.

Ultrasonic focusing


A ring-type ultrasonic motor drives autofocus extremely quickly, and in near silence. Excellent holding torque ensures the point of focus is reached accurately, without overshooting. Furthermore, full-time manual override is available, making it possible to adjust focus without leaving AF mode.

Non-rotating front element


The front of the lens does not rotate, which makes using specialised filters, such as polarisers and graduates, easier. A drop-in gelatine-filter holder can be found at the back of the lens.

Smooth background blur


A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background.

Palkinnot

Tuotteen tekniset tiedot

Lue lisää tuotteen Canon EF 17-40mm f/4L USM ominaisuuksista ja toiminnoista.

EF 17-40mm f/4L USM Arvostelut

Katso myös

Autamme sinua objektiivin valinnassa

Objektiivivalitsimemme avulla voit tutustua koko valikoimaamme ja löytää juuri oikean objektiivin EOS-kameraasi.

Lens Guru Mobile App

Opi valokuvauksen perusteet ja katso, kuinka objektiivien vaihto vaikuttaa kuviin.

canon lens guru
irista

irista

Tallenna kuvasi turvallisesti ja laadukkaina. Tilaa nyt, niin saat 15 Gt tallennustilaa.

kampanja