12-24mm F4 DG HSM

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12-24mm F4 DG HSM

Available mounts

  • F4 brightness throughout the zoom range
  • Outstanding image quality from center to edges
  • Angle of view even wider than that of human vision
  • Minimum focusing distance of only 24cm / 9.4 in.
  • Minimal distortion and chromatic aberration
  • Exclusive low-dispersion glass
  • Super Multi-Layer Coating reduces flare and ghosting
  • Water and oil repellent front coating
  • HSM (Hyper Sonic Motor) delivers high AF speed
  • 9-blade rounded diaphragm
  • Made in Japan

SPECIFICATIONS

LENS CONSTRUCTION / MTF

TECHNOLOGY

Camera Type DSLR
Corresponding Mount Canon EF-mount, Nikon F, Sigma SA
Sensor Size Full Frame [DG]
Lens Construction 16 Elements in 11 Groups
Angle of view 122.0° - 84.1°
Number of diaphragm blades 9 (rounded diaphragm)
Minimum aperture F22
Minimum focusing distance 24 cm* *At 24 mm end of the zoom range
Maximum magnification ratio 1:4.9
Dimensions (diameter x length) Canon EF: ⌀ 102.0 mm × 131.5 mm
Nikon F: ⌀ 102.0 mm × 131.5 mm
SIGMA SA-mount: ⌀ 102.0 mm × 131.5 mm
Weight (g) Canon EF: 1,150 g
Nikon F: 1,150 g
SIGMA SA-mount: 1,150 g
Edition number A016

The three-digit code on the surface of the lens is to indicate the year the lens was first released. (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)
Supplied Accessories Cover Lens Cap LC1020-01, Rear Cap LCR II, Case LS-205L, Mount Converter MC-11, Mount Converter MC-21, USB-dock UD-01
EAN Canon EF: 085126205546
Nikon F: 085126205553
Sigma SA: 085126205560
Specification info * All figures calculated by Sigma SA mount.
* The Nikon mount version of this lens includes an electromagnetic diaphragm mechanism. Functionality may be limited on some camera bodies. *For Nikon F mount cameras, please see Nikon camera compatibility
  • Lens construction

    Lens construction diagram
            FLD glass SLD glass Aspherical lens
  • MTF Chart

    The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
    The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.

    *The MTF chart depicts the result at the wide-open aperture.
    *For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
    *The spatial frequency indicates the variation on the image plane before distortion correction is performed.

  • Spatial frequency

    S: Sagittal Line

    M: Meridional Line

  • 10lp/mm


  • 30lp/mm


  • Diffraction MTF

    Diffraction MTF chart
  • Diffraction MTF

    Diffraction MTF chart
  • Geometrical MTF

    Diffraction MTF chart
  • Geometrical MTF

    Diffraction MTF chart
  • Distortion

    effective distortion
    When you take a picture of a lattice pattern, it will appear as the blue dotted line shows. The red line illustrates how the lattice pattern will appear in the actual picture when any lens distortion is taken into account.

    relative distortion
    In this chart, the horizontal axis shows the ideal image height (the distance from the center to the edge of the image [mm]). The vertical axis shows the extent of distortion. The extent of distortion is represented by how much Y, which is the actual image height, grows (or shrinks) against Y0 which is the ideal image height.

    When you take the picture of a square object, if the distortion amount shows a minus value, the image will be seen as expanded (Barrel distortion). If the distortion amount is a plus value, it will be seen as a recessed (Pincushion distortion). When the distortion value is close to 0, the appearance of distortion is very minimal.

Geometrical MTF chart


Geometrical MTF chart 2


Geometrical MTF chart 2


Geometrical MTF chart 2

  • Vignetting

    The horizontal axis shows the image height (the distance from the center to the edge of the image [mm]).The vertical axis shows the amount of light in the image (based on the amount of light in the image center being 100%). If the peripheral amount of light is lower than the center, the four corners of image will be darker (vignetting).

  • F4


  • F8

  • F16


  • Vignetting chart

Vignetting chart

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