Home Lenses Standard Canon 17-70/2.8-4.5 DC Macro

17-70/2.8-4.5 DC Macro

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  • Large aperture standard zoom lens designed specially for digital SLR cameras.

    The lens is ideally suited for a wide variety of subjects and is designed specifically for digital SLR cameras featuring APS-C size image sensors. The Nikon fit version also includes an HSM auto focus motor.  This revolutionary lens has a minimum focusing distance of 20cm (7.9”) throughout the entire zoom range. A maximum magnification of 1:2.3 enables extreme close-up photography. An impressive achievement for a standard zoom lens. The new lens design and multi-layer lens coating reduce flare and ghosting, a common problem with digital cameras.  A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range. This lens offers a large F2.8 aperture at 17mm wide angle and yet it is compact, with an overall length of just 82.5mm (3.2”) and diameter of 79mm (3.1”). Performance is superb, even in relatively low light conditions indoors or at dusk.

    The lens is equipped with an inner focusing system, which prevents the front element from rotating making it particularly suitable for petal shaped hoods and circular polarizing filters. The lens is also equipped with a zoom lock that eliminates 'zoom creep' during transit.

  • Lens elements 15
    Lens groups 12
    Optic angle in degrees (35mm)
    Optic angle in degrees (SD format mm) 72.4-20.2
    Number of diaphragm blades 7
    Smallest diaphragm 22
    Largest diaphragm 2.8
    Shortest focus distance (cm) 20
    Maximum enlargement 1:2.3
    Filter size 72
    Diameter (mm) 79
    Length (mm) 82.5
    Weight (g) 455
    Zonnekap Yes
    Statiefgondel No
    Case No
    Converter No
    Mount Canon, Fuji, Konica/Minolta, Nikon, Pentax, Sigma, Sony
    Barcode(s)
    • Canon (0085126669270)
    • Nikon (0085126689599)
    • Pentax (0085126669607)
    • Sigma (0085126669560)
    • Sony (0085126669348)
  • MTF (Modulation Transfer Function; modulatieoverdrachtsfunctie) is een van de metingen die worden verricht om de optische prestaties van een objectief te bepalen. Men meet hiertoe het beeldcontrast bij verschillende ruimtelijke frequenties (lijnparen per millimeter).De horizontale as is verdeeld in millimeters en toont de afstand van het midden tot de rand van het beeld. De bijbehorende contrastwaarde (maximaal 1) is uitgezet op de verticale as. 

    669 grafiek1.gif 669 grafiek2.gif

    De waarde bij 10 lijnparen per millimeter geeft het objectiefcontrast aan (rode lijntjes). De zich herhalende fijne parallelle lijnen bij 30 lijnparen per millimeter geven het scheidend vermogen (scherpte) van het objectief bij de volle opening aan.

    De zich herhalende fijne parallelle lijnen die in de diagonale richting van de ene naar de andere hoek van het beeld lopen worden Sagittale lijnparen (S) genoemd. De lijnen die daar loodrecht op staan worden Tangentiale lijnparen (T) genoemd. 

  • Dgm_17_70_28_45[1] Diagram669.gif
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Available accessories

  • Lens Hood LH780-01

  • UV Multicoated filter 72mm

  • Microfibercloth 31x31cm

  • Polarisatie Multicoated circular slimline filter 72mm

  • Front lens cap 72mm

  • Back lens cap all types (Nikkon)

  • Back lens cap all types (Canon)

  • Back lens cap all types (Sony)

  • Back lens cap all types (Sigma )

  • Back lens cap all types (Pentax)