Specifications
Key specifications |
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| Minimum focus distance | 24 cm |
| Autofocus | Yes |
| Image stabilization | No |
| Sensor compatibility | APS-C / DX |
General information |
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| Manufacturer | Sigma |
| Product type | Lenses |
| Item number | 238758 |
| Manufacturer no. | 203962 |
| Release date | 06.05.2010 |
| External links | Manufacturer's site (de) |
Colour |
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| Colour group |
Black
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Camera lens properties
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Camera lens properties
A camera lens (also known as photographic lens, objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically. |
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Lens type
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Lens typeWith photo lenses, a further distinction is made according to the angle of view which determines the focal length for a given image format. |
Wide angle lens
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Wide angle lensIn photography and cinematography, a wide-angle lens refers to a lens whose focal length is substantially smaller than the focal length of a normal lens for a given film plane. This type of lens allows more of the scene to be included in the photograph, which is useful in architectural, interior and landscape photography where the photographer may not be able to move farther from the scene to photograph it. |
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Lens mount
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Lens mountA lens mount is an interface — mechanical and often also electrical — between a photographic camera body and a lens. It is confined to cameras where the body allows interchangeable lenses, most usually the single lens reflex type or any movie camera of 16 mm or higher gauge. Lens mounts are also used to connect optical components in instrumentation that may not involve a camera, such as the modular components used in optical laboratory prototyping which join via C-mount or T-mount elements. |
Sony Alpha
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Focal length
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Focal lengthThe focal length of an optical system is a measure of how strongly it converges (focuses) or diverges (diffuses) light. A system with a shorter focal length has greater optical power than one with a long focal length. |
8 - 16 mm
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Focal Length APS-C / DX (35mm film equivalent)
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Focal Length APS-C / DX (35mm film equivalent)In photography, the 35 mm equivalent focal length is a measure that indicates the angle of view of a particular combination of a camera lens and film or sensor size. The term is useful because most photographers experienced with interchangeable lenses are most familiar with the 35 mm film format. |
8 - 16 mm
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| Sensor compatibility |
APS-C / DX
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Number of lenses
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Number of lensesA lens is an optical device which transmits and refracts light, converging or diverging the beam. |
15
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Number of lens groups
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Number of lens groupsSpecifies how many groups the lenses are divided into. |
11
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Zoom function
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Zoom functionThe device has a zoom function. |
Yes
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Internal focusing
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Internal focusingInternal focusing, abbreviated IF, is a type of lens design in which the distance is not adjusted by shifting the entire lens, but only one or more lenses within the lens. The remaining lenses, especially the front lens, maintain their distance from the image capture plane (filament net, film or image sensor), which does not change the overall length of the lens. |
Yes
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Focusing
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FocusingIn geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle. This non-ideal focusing may be caused by aberrations of the imaging optics. In the absence of significant aberrations, the smallest possible blur circle is the Airy disc, which is caused by diffraction from the optical system's aperture. Aberrations tend to get worse as the aperture diameter increases, while the Airy circle is smallest for large apertures. |
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Autofocus
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AutofocusAutofocus (or AF) is a feature of some optical systems that allows them to obtain (and in some systems to also continuously maintain) correct focus on a subject, instead of requiring the operator to adjust focus manually. |
Yes
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Manual focus
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Manual focusIt is possible to focus manually. The autofocus is therefore not used. |
Yes
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Minimum focus distance
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Minimum focus distanceThe shortest distance supported. |
24 cm
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Diaphgragm properties
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Diaphgragm propertiesIn optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of the diaphragm is to stop the passage of light, except for the light passing through the aperture. |
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Minimum aperture f/
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Minimum aperture f/In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are, which is of great importance for the appearance at the image plane. If an aperture is narrow, then highly collimated rays are admitted, resulting in a sharp focus at the image plane. If an aperture is wide, then uncollimated rays are admitted, resulting in a sharp focus only for rays with a certain focal length. This means that a wide aperture results in an image that is sharp around what the lens is focusing on and blurred otherwise. The aperture also determines how many of the incoming rays are actually admitted and thus how much light reaches the image plane (the narrower the aperture, the darker the image for a given exposure time). |
22 x
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Product dimensions
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Product dimensionsPhysical size of an object |
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| Diameter |
7.50 cm
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| Weight |
0.56 kg
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| Length |
10.57 cm
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Properties |
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Durability
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DurabilityThe resistance of a product against outer physical influence (like water, fire, shocks). |
Metal mount
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Delivery contents
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Delivery contentsThe scope of delivery means the included accessories. |
Lens hood
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Lens hoodIn photography, a lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare.
Protective case
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Protective caseA protective cover protects the device from various external influences and thus from unwanted wear. |
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Returns and warranty
Dead on arrival (DOA) 10 Days Bring-in
Warranty 30 Years Bring-in
Out-of-warranty repairs Available for a fee.
30-day right of return
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30-day right of return
A minimum of 10% will be deducted from opened products. Unfortunately, we cannot accept a product if it is damaged, incomplete or missing its original packaging.
Returns and warranty
Please use our simplified returns and warranty process to return a product or register a warranty case. Returns and warranty
Please use our simplified warranty process to view the warranty period as well as any warranty extensions you may have purchased. This will ensure that your return or warranty case is processed quickly and effectively.
Insurance
All Risk
All RiskInsure your device with allrisk by allianz against falls, impact, breakage, screen damage and damage caused by water or humidity. Improper use (call and data misuse) due to theft is also covered. With your purchase, you accept the general terms and conditions. |
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| 1 Year | CHF 42.– |
| 2 years | CHF 71.– |
Allgemeine Versicherungsbedingungen Allianz.PDF | 305.75 KB | GermanGeneral Insurance Conditions Allianz.PDF | 302.08 KB | EnglishConditions geneerales dassurance Allianz.PDF | 358.63 KB | FrenchCondizioni generali di assicurazione Allianz.PDF | 353.45 KB | Italian
Availability
Mail delivery/Collection
Product is not ready for sale or temporarily not available. No delivery date known.
Not in stock
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Request delivery date
Information subject to change.
Matching accessories
Hygiene + Cleaning products
CHF 15.40
Hama Lenspen, Reinigungsstift
Availability
Mail delivery
-
More than 10 piece(s)
in our warehouse
Collection
- Basel: tomorrow at 13:10
- Bern: tomorrow at 12:45
- Dietikon: tomorrow at 12:50
- Geneva: approx. 30.04.2018
- Kriens: approx. 30.04.2018
- Lausanne: Only 1 piece(s)
- St Gallen: approx. 30.04.2018
- Winterthur: tomorrow at 12:50
- Wohlen: today at 14:30
- Zurich: today at 17:30
PickMup
-
More than 10 piece(s)
What is PickMup?
If ordered immediately.
Information subject to change.
Customer questions and answers
The 1 most helpful customer questions
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Customer ratings
The 1 most useful ratings
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Bin sehr zufrieden mit dem Objektiv. Konnte es w...
Bin sehr zufrieden mit dem Objektiv. Konnte es während einer zweiwöchigen Trekkingtour ausgiebig testen. Die Bildqualität ist hervorragend und der Fokus ist schnell.
Man muss sich jedoch an die Handhabung eines Objektivs mit einer so kurzen Brennweite gewöhnen (zusammenlaufende Linien und Gelände, Wahl des Motivs etc.).
Einzige Kritikpunkte sind, dass der Autofocus nicht immer auf Anhiebe 100% scharf stellt und man zur Sicherheit jeweils mehr als ein Foto schiessen muss. Habe auch festgestellt, dass der Autofokus das Motiv besser scharf stellen kann als wenn man es manuell tut. Weiter hat das Objektiv kein Filtergewinde (Hülse für den Deckel hat jedoch einen). Dies ist aber auch keine grosse Sorge, da man bei solchen Weitwinkelobjektiven, Polfilter und dergleichen eigentlich nicht anwenden kann (Polarisation verändert sich über den Bildbereich).…more
(purchased this product)
13.10.2014
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