Product Description
-------------------
Super Performance
Ultimate photo fun and fantastic perspectives are inevitable with
this lens. This ultra wide-angle lens builds on the concept of
the excellent Tamron 11-18mm F4.5-5.6. It belongs to the Super
performance (SP) class of Tamron lenses distinguished by ultra
high optical and mechanical quality.
It has a very wide angle of view, equivalent to 16-37mm when
converted to full format. The MFD of 24cm allows you to get close
to your subject, for absolute control and creativity. Tamron’s Di
technology results in high resolution coupled with the best
possible correction of the most common aberrations. Particular
emphasis is placed on the BBAR coating, which is also put on
cemented surfaces (Internal Surface Coating) for sharp and
brilliant images. Other materials such as LD (Low Dispersion)
glass and aspherical elements also help to correct aberrations.
Capture better images with this masterpiece of optical
engineering.
Wide Angle Zoom
---------------
The new Tamron ultra wide-angle zoom lens covers the 35mm
full-size format equivalent of 16-37mm, for the first time in
this class of zoom lenses. This focal length range – 10mm ultra
wide-angle to 24mm semi wide-angle – enables the user to enjoy
hassle-free wide-angle photography. The new zoom lens covers a
wider focal length range, has a greater zoom ratio, and offers a
faster maximum aperture than the older SP AF11-18mm F/4.5-5.6 Di
II zoom lens (Model A13) and enhanced optical quality. Despite
the higher specifications, the new zoom lens is lightweight and
compact and accepts the same 77mm filter as its predecessor.
Close Focus Distance
Close Focus Distance
--------------------
Because a close-focusing capability is essential in wide-angle
photography, Tamron engineered a 0.24m (9.4") minimum focus
distance across the zoom range. This capability gives the user
freedom to create images with an exaggerated perspective at the
10mm ultra wide-angle end and shoot with a maximum magnification
ratio of 1:5 at the 24mm semi-wide-angle setting.
Flower-Shaped Hood
------------------
Included as a standard accessory, the flower-shaped hood matches
the rectangular shape of the image sensor to effectively block
the interference of superfluous light rays entering from outside
the borders of the image area, helping to ensure sharp, clear,
flare-free images with crisp detail in the shadow areas.
Optimal Angles and Enhanced Peripheral Illumination
---------------------------------------------------
The new ultra wide-angle zoom lens uses a new optical system
designed to confine the changing angles of incidences of light
rays reaching the imaging sensor within a certain over the
entire image field, from the centre to the periphery, addressing
the effects of variances caused by zooming. Peripheral light
fall-off that becomes an image-degrading factor in wide-angle
photography is minimised to ensure high optical quality from the
centre to the periphery.
Di II
-----
As an SP Di II class lens, it provides high optical quality in
resolution, contrast, and flatness of image field. Tamron Di-II
lenses are engineered expressly for digital SLR cameras with
image sensors commonly referred to as APS-C, measuring
approximately 24mm x 16mm. Rendering an ideal image circle for
APS-C sensors, Di-II lenses are also include properties to
optimise digital imaging performance. These lenses are not
designed for conventional cameras or digital cameras with image
sensors larger than 24mm x 16mm.
Low Dispersion Glass
Low Dispersion Glass (LD)
-------------------------
Low dispersion (LD) glass elements within the lens help reduce
chromatic aberration, i.e. the tendency of light of different
colours to come to different points of focus at the image plane.
Chromatic aberration reduces the sharpness of an image, but glass
with an extremely low dispersion index has less of a tendency to
separate (diffract) a ray of light into a rainbow of colours.
This characteristic allows the lens designer to effectively
compensate for chromatic aberration at the centre of the field
(on axis), a particular problem at long focal lengths (the
telephoto end of the zoom range), and for lateral chromatic
aberration (towards the edges of the field) that often occurs at
short focal lengths (the wide-angle end of the zoom range.)
Internal Surface Coating
------------------------
Ghosting and flare caused by aberrations can occur in digital SLR
photography, but Tamron has adopted various countermeasures
against this problem. These include the use of Internal Surface
Coatings (multiple-layer coatings on cemented surfaces of plural
elements), and new multiple-layer coating technology on ordinary
elements, used to minimise reflections that occur when light
enters through the front element and to reduce image degrading
effects caused by the imagers themselves.
Aspherical Lens Elements
Aspherical Lens Elements (ASL)
------------------------------
This Tamron lens uses several hybrid Aspherical elements and
therefore bears the Aspherical designation. The innovative optics
deliver exceptional image quality, and at the same time offer
remarkable zoom ranges in an extraordinarily compact package. By
perfecting the cutting-edge advances for series production,
Tamron has virtually eliminated spherical aberration and image
distortion from their high-power-zoom series. Through the
effective application of Hybrid Aspherical Technology, one lens
element can take the place of multiple elements without
compromising performance. This is what allows us to produce
remarkably compact long-range lenses that deliver a uniformly
high level of image quality at all focal lengths and apertures.
Internal Focusing System (IF)
-----------------------------
Internal focusing (IF) provides numerous practical benefits to
photographers including a non-rotating front filter ring that
facilitates the positioning of polarising and graduated filters,
and more predictable handling as the lens length does not change
during focusing. Even more important, Tamron’s Internal Focusing
(IF) system provides a much closer minimum focusing distance
(MFD) throughout its entire focusing range. In addition, IF
improves optical performance by minimising illumination loss at
the corners of the image field, and helps to suppress other
aberrations that become more troublesome at different focusing
positions.
Legal Discler
----------------
Gebrauchtware Bei diesem Artikel findet die Differenzbesteuerung
Anwendung (§ 25 a Abs. 2 UStG), so dass die anfallende MwSt nicht
getrennt ausgewiesen werden kann.
- Ultra wide-angle lens builds on the concept of Tamron's lengendary 11-18 mm F4.5-5.6.
- Optimal Performance designation for photographers who demand the very best in image quality.
- Hybrid aspherical elements ensure distinct image quality and compactness.
- Low Dispersion lens elements for optimum image sharpness and the correction of chromatic aberration.