- 70-200mm focal length, Minimum focus Distance - 1.40m/55.1 inch.
- 105-300mm equivalent focal length on APS-C cameras, 112-320mm equivalent focal length on Canon APS-C cameras.
- F2.8 constant maximum aperture; F22 minimum, Ring-type ultrasonic-type AF motor with full-time manual focusing.
- Image stabilization, 4 stops cled. Dual mode, normal and panning.
- 77mm filters, Available in Canon EF, Nikon F (FX), Pentax KAF3, Sony Alpha, Sigma SA s.
Product Description
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SIGMA 70-200MM LENS CANON F/2.8 LARGE TELEPHOTO LENS
From the Manufacturer
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Large aperture telephoto zoom lens incorporating Sigma's original
Optical Stabilizer function
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This large aperture telephoto zoom lens, incorporating Sigma's
original Optical Stabilizer function, covers focal lengths from
70mm to 200mm and offers a constant aperture of F2.8 over the
entire zoom range. The OS function offers the use of shutter
speeds approximately 4 stops slower than would otherwise be
possible. It makes shooting easy for many types of photography
such as portraits and sports. Two FLD ("F" Low Dispersion) glass
elements, which have performance equal to fluorite glass, and
three SLD (Special Low Dispersion) glass elements provide
excellent correction of color aberration. Super Multi-Layer
Coating reduces flare and ghosting. The lens incorporates HSM
(Hyper Sonic Motor), ensuring a quiet and high speed AF as well
as full-time manual focus capability. It is also possible to
attach Sigma's optional APO Tele Converters.
No Optical Stabilizer (top). With Optical Stabilizer (bottom).
Super Multi-Layer Coating
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The lens is equipped with Sigma's own unique OS (Optical
Stabilizer) function. This system offers the use of shutter
speeds approximately 4 stops slower than would otherwise be
possible, making telephoto shooting easy. Mode 1 is ideal for
general photography and Mode 2 is designed for panning subjects
such as racing cars. For Sony and Pentax , the built-in OS
function of this lens can be used even if the camera body is
equipped with an anti-shake function. As compensation for camera
shake is visible in the view finder, the photographer can easily
check for accurate focus and ensure there is no subject movement.
* For Pentax and Sony s, it is not possible to use the AF
and the built-in OS function of this lens when attaching it to
film SLR cameras as well as Pentax ist series and K100D.
* When using the OS function of a lens with a camera which
incorporates a stabilizer unit, please turn the camera's
stabilizer unit off.
* This lens cannot be used with film SLR cameras with the
exception of the Nikon F6 and Canon EOS-1v.
Compact construction
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This lens has a compact construction with a diameter of 3.4in,
overall length of 7.8in. and weight of 50.4oz. This compact and
lightweight construction makes it ideal for many types of
photography such as portraits, landscapes and sports.
No Super Multi-Layer Coating (left). With Super Multi-Layer
Coating (right).
Excellent Optical Performance
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This lens features two FLD ("F" Low Dispersion) glass elements,
which have the performance equal to fluorite glass, and three SLD
(Special Low Dispersion) glass elements providing excellent
correction of color aberration. The Super Multi-Layer Coating
reduces flare and ghosting and ensures high contrast images. High
image quality is assured throughout the entire zoom range.
* FLD glass is the highest level low dispersion glass available
with extremely high light transmission. This optical glass has a
performance equal to fluorite glass which has a low refractive
index and low dispersion compared to current optical glass. It
also benefits from high anomalous dispersion.
These characteristics give excellent correction for residual
chromatic aberration (secondary spectrum) which cannot be
corrected by ordinary optical glass and ensures high definition
and high contrast images.
Hyper Sonic Motor
High speed and quiet AF
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HSM indicates lenses equipped with a Hyper Sonic Motor, driven by
ultrasonic waves. Incorporation of HSM (Hyper Sonic Motor)
ensures quiet and high speed autofocus, while allowing full-time
manual focus override.
* For Sony and Pentax , AF will not function with DSLR
cameras that do not support HSM.
Rounded diaphragm
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This lens has a rounded 9 blade diaphragm which creates an
attractive bokeh to the out of focus area.
Lens Construction
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In a conventional lens, focusing requires an extension of the
entire lens or the front lens group. However, to better
accommodate autofocusing mechanisms and closeup photography, a
need has arisen for lenses that do not change their length during
focusing or suffer from focus-dependent variation in aberration.
Therefore, Sigma has developed focusing systems that only move
elements within the lens barrel. These incorporate smaller and
lighter moving lens elements which help improve auto-focus speed.
With their unchanging barrel length and small variation in the
center of gravity, these lenses also enhance balance and
stability for the photographer. Furthermore, since the front of
the lens does not rotate, polarizing filters can be used with
extra convenience.
Specifications
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Lens Construction 22 Elements in 17 Groups Angle of View 34.3 -
12.3 degrees Number of Diaphragm Blades 9 Blades (Rounded
diaphragm) Minimum Aperture F22 Minimum Focusing Distance 140cm /
55.1in. Maximum Magnification 1:8 Dimensions Diameter 86.4mm x
Length 197.6mm /3.4in. x 7.8in. Weight 1430g / 50.4oz.
MTF Chart
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( https://images-na.ssl-images-.com/images/G/01/electronics/lenses/Sigma/70-200mm/SIGMA_70-200mm_img6_lg._V401503790_.gif )
MTF (Modular Transfer Function) is one of the measurements that
evaluates a lens' performance, and it contrasts sensitivity at
different spacial frequencies. The horizontal axis is in
millimeters and shows the distance from the center of the image
toward the edges, and contrast value (highest value is 1) is
shown in the vertical axis.
The readings at 10 lines per millimeter measure the lens'
contrast ability (red lines), repeating fine parallel lines
spaced at 30 lines per millimeter measure the lens' sharpness
ability (green lines), when the aperture is wide open. Fine
repeating line sets are created parallel to a diagonal line
running from corner to corner of the frame, are called Sagittal
lines (S) and sets of repeating lines vertical to these lines are
drawn, called Meridional (M) line sets.
Distortion
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View Larger Image
( https://images-na.ssl-images-.com/images/G/01/electronics/lenses/Sigma/70-200mm/SIGMA_70-200mm_img7_lg._V401503784_.gif )
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 the distortion is represented by how
much Y, which is the actual image height, grows (or shrinks)
against Y0 which is the ideal image height.
Extent of distortion: D[%]=(Y-Y0/Y0)x100
When you take the picture of a square object, if the distortion
a show a minus value, the image will be seen as expanded
(Barrel distortion). If the distortion a is a plus value, it
will be seen as a recessed (pincushi on distortion). When the
distortion value is close to 0, the appearance of distortion is
very minimal.
Vignetting
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View Larger Image
( https://images-na.ssl-images-.com/images/G/01/electronics/lenses/Sigma/70-200mm/SIGMA_70-200mm_img8_lg._V401503790_.gif )
The horizontal axis shows the image height (the distance from
the center to the edge of the image [mm]). The vertical axis
shows the a of light in the image (based on the a of
light in the image center being 100%). If the peripheral a
of light is lower than the center, the four corners of the image
will be darker (vignetting).