100-400mm F5-6.3
DG OS HSM
- Compact body and top performance
- Optical stabilizer (OS) system
- Minimum focus distance of 160cm / 63 in.
- Maximum magnification ratio of 1:3.8
- HSM (Hyper Sonic Motor) delivers high AF speed
- TSC (Thermally Stable Composite) construction
- Mount with dust and splash resistant structure
- Designed to minimize flare and ghosting
- Exclusive low-dispersion glass
- 9-blade rounded diaphragm
- Made in Japan
AWARDS
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OUTDOOR PHOTOGRAPHER |
2017 |
| Angle of view | Telephoto | |
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| Unique selling proposition | Quick delivery | |
| Camera Type | DSLR | |
| Lens Mount | Canon EF-mount, Nikon F, Sigma SA | |
| Sensor Size | Full Frame | |
| Construction | 21 Elements in 15 Groups | |
| Angle of view | 24.4º - 6.2º (35 mm) | |
| Number of diaphragm blades | 9 (ümar diafragma) | |
| Minimum aperture | F22 | |
| Minimum focusing distance | 160 cm / 63 in. | |
| Maximum magnification ratio | 1:3.8 | |
| Filter diameter | 67mm | |
| Dimensions (diameter x length) | Canon EF ⌀ 86.4 x 182.3mm |
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| Weight (g) | Canon EF 1160 g |
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| Edition number | C017 | |
| Supplied Accessories | Lens Hood LH770-05, Front Cap LCF-67mm III, Rear Cap LCR II | |
| Accessories | WR Ceramic Protector Filter 67mm, WR Protector Filter 67mm, WR C-PL Filter 67mm, Tele Converter TC-1401, Tele Converter TC-2001, USB-dock UD-01, Mount Converter MC-11, Mount Converter MC-21 | |
| EAN | Canon EF 085126729547 |
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| Specifications Info | ** The appearance, specifications, and the like of the product are subject to change for improvement without notice |
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LENS CONSTRUCTION
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SLD GLASS
MTF CHART
There are two types of MTF chart. One considers the diffraction quality of light, which is called "Diffraction MTF", and the other, "Geometrical MTF" does not.
The quality of light appears in the diffracted light, and becomes more distinct as the F value gets bigger, resulting in lower image quality. Also, diffracted light exists at every aperture, which is why Sigma has been releasing Diffraction MTF data from the beginning since it is very close to the actual image data.
The advantage of using "Geometric MTF" data is that it is easy to measure and calculate since it does not consider the diffraction quality of light, yet it tends to show higher values in the graph than actual images.
The readings at 10 lines per millimeter measure the lens's contrast ability ( red lines), repeating fine parallel lines spaced at 30 lines per millimeter measure the lens's 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 Moridional (M) line sets.
*The MTF chart gives the result at the wide-open aperture.
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Spatial frequency |
S:Sagittal Line |
M: Meridional Line |
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10lp/mm |
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30lp/mm |
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DIFFRACTION MTF 100MM
DIFFRACTION MTF 400MM
GEOMETRICAL MTF 100MM
GEOMETRICAL MTF 400MM
DISTORTION
How to read the distortion chart
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.
BARREL EFFECTIVE DISTORTION
PINCUSHION EFFECTIVE DISTORTION
BARREL RELATIVE DISTORTION
PINCUSHION RELATIVE DISTORTION
Nikon electromagnetic diaphragm mechanism
The Nikon mount version of this lens includes an electromagnetic diaphragm mechanism that allows it to receive the appropriate signals from the camera body. This feature ensures precision diaphragm control and stable Auto Exposure (AE) performance during continuous shooting.
High-precision, rugged brass bayonet mount
The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
Mount with Dust and Splash Resistant Structure
The lens mount incorporates rubber sealing to protect the mount from dust and water drops.
Zoom lock switch (Wide end)
The zoom lock switch fixes the zoom ring at the widest end, preventing it from rotating and causing the lens barrel to extendunder its own weight during transportation.
HSM (Hyper Sonic Motor)
The Hyper Sonic Motor (HSM) is an original Sigma development that uses ultrasonic waves to drive the autofocus mechanism. Its extremely quiet operation helps avoid disturbing photographic subjects. High torque and speed assure rapid autofocus response. Sigma uses two types of HSM: ring HSM and micro HSM. The Ring HSM configuration permits manual fine tuning of focus (manual override) by turning the focusing ring after autofocus is complete.
Rounded diaphragm
The polygonal shape of a conventional iris dia phragm causes out-of-focus light points to appear polygonal. A rounded diaphragm is designed to pro duce rounded out-of-focus light points when opened to near maximum aperture. This creates attractive bokeh effects in many situations, such as when pho tographing a subject against an out-of-focus surface of water from which light is being reflected.
OS (Optical Stabilizer) function
Sigma's original OS (Optical Stabilizer) function uses sensors inside the lens to detect any motion, then moves specific lens elements in order to effectively minimize blur caused by such movement. Owing to the stabilized image in the viewfinder, it is possible to fine-tune composition and ensure accurate focusing.
Exclusive low-dispersion glass
The degree to which light is refracted by glass depends on the light's wavelength. This fact causes different colors of light to focus at slightly different points. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. Yet residual chromatic aberration known as "secondary spectrum" may still remain. To minimize this secondary spectrum, which can be a serious issue with conventional lenses, Sigma lenses feature up to three types of exclusive low-dispersion glass offering superior performance: ELD (Extraordinary Low Dispersion), SLD (Special Low Dispersion) and FLD ("F" Low Dispersion). In particular, FLD glass offers ultra-low dispersion in combination with high transmittance and the anomalous dispersion characteristics of fluorite. Meticulous deployment of these types of exclusive low-dispersion glass and optimization of power distribution gives Sigma lenses superlative image rendition undiminished by residual chromatic aberration.
