Product Description
-------------------
Sigma have made the 18-250mm more compact and thus more portable
than its predecessor
Click here to view larger
( https://images-eu.ssl-images-.com/images/G/02/uk-electronics/product_content/sigma/Sigma_have_made_the_18-250mm_more_compact_and_thus_more_portable_than_its_predecessor_large.jpg )
18-250mm f/3.5-6.3 DC Macro OS HSM
----------------------------------
Produced in their legendary Aizu facility in Japan, Sigma
presents their 18-250mm f/3.5-6.3 DC Macro OS HSM zoom lens.
Building on 50 years of innovation in precision optics design and
craftsmanship, the 18-250mm is a versatile super zoom lens and
direct successor to the widely accled Sigma 18-250mm F3.5-6.3
DC OS HSM. Evolving from the success of its predecessor, the
18-250mm sets a new generation’s high zoom ratio by achieving
improved image quality, a significantly reduced size and an
advanced close focus capability. With its ability to cover such
an extreme range of focal lengths, this lens makes a great
all-round offering to any budding photographer.
By using the innovative Thermally Stable Composite material, the
18-250mm is 25% lighter than its predecessor
Click here to view larger
( https://images-eu.ssl-images-.com/images/G/02/uk-electronics/product_content/sigma/By_using_the_innovative_Thermally_Stable_Composite_material_the_18-250mm_is_25_lighter_than_its_predecessor_large.jpg )
The Lens Design
---------------
Design features make up the foundation of the Sigma 18-250mm
lens. Measuring 7.4cm x 8.7cm and weighing just 470g, the
18-250mm is both more compact and 25% lighter than its
predecessor. Sigma have achieved this incredible weight reduction
by using a new lighter material called Thermally Stable Composite
(TSC) instead of much heavier Polycarbonate. This innovative
material has a thermal shrinkage level equivalent to aluminium
and has little contractility, even when subjected to sharp
temperature changes.
The 18-250mm features Sigma’s dedicated Optical Stabiliser system
(OS). The system offers an effective blur correction of 4 stops,
helping to stabilise the image and counter shake. It is also
linked to the viewfinder, allowing for more accurate previews and
thus in focus images. Working alongside the OS is Sigma’s
in-house developed inner focussing system, which both eliminates
the need to extend the barrel, reducing light loss, and the need
to rotate the front lens. In staying fixed, the front lens can
accommodate a petal design hood (included) that helps to counter
light related issues such as glare. The inner focussing system
also allows for the use of Circular Polarising filters. The lens
also features Sigma’s exclusive Hyper Sonic Motor (HSM) which
works to auto focus images in a fast, accurate and silent manner.
All the above features combined give the lens an extraordinary
ability to produce in focus images whether at close or long
ranges.
The final design feature on the 18-250mm lens is a greatly
improved bayonet . Sigma manufacture the from
speciality treated brass, the result of which create a more solid
and rust resistant connection between camera and lens.
From Macro to Telephoto
-----------------------
By covering such a broad range of focal lengths, the 18-250mm
lens is capable of taking many different types of images and
therefore accommodating many different types of user. With a
fixed minimum focusing distance of 35cm throughout the entire
focal range and a maximum reproduction ratio of 1:2.9, the lens
performs well at taking close up images regardless of the
distance between subject and lens. At the lower focal length
settings (18-30mm) the lens acts like a Macro and reproduces
detailed wide angled images of close up subjects. Then simply
zoom in a little and the lens automatically turns into a
standard-medium range telephoto. Finally, increase the zoom to
the maximum focal lengths and it becomes a full telephoto lens
allowing you to pin point a specific area within a landscape or
scene and reproduce it in stunning close up detail. Higher F stop
numbers as well as OS technology enhance the performance of the
lens for long distance photography.
One SLD and three aspherical lens elements counter various
optical aberrations and increase light transfer to the sensor
Click here to view larger
( https://images-eu.ssl-images-.com/images/G/02/uk-electronics/product_content/sigma/One_SLD_and_three_aspherical_lens_elements_counter_various_optical_aberrations_and_increase_light_transfer_to_the_sensor_large.jpg )
The Optical Composition
-----------------------
In all forms of lens construction, Sigma puts the highest
emphasis on the quality and craftsmanship of the internal optics.
As a result, the 18-250mm incorporates a set of cutting edge and
unique optical features which work to create bright and sharp
images, at all focal lengths. One out of a total sixteen lens
elements, is manufactured from Special Low Dispersion (SLD)
glass, renowned for its high resolution and light transmission
properties. It works in conjunction with three aspherical lens
elements (one double sided) to counter various colour and optical
aberrations throughout the zoom range. The configuration also
ensures that all levels of distortion are corrected. The
resulting images speak for themselves in terms of sharpness and
resolution.
Super Multi Layer coatings work to eliminate flare and ghost
irregularities
Click here to view larger
( https://images-eu.ssl-images-.com/images/G/02/uk-electronics/product_content/sigma/Super_Multi_Layer_coatings_work_to_eliminate_flare_and_ghost_irregularities_large.jpg )
The lens incorporates a 7 blade diaphragm which produces a
desirable blur (bokeh) effect on out of focus areas. The
diaphragm also smoothes out intense back lighting, making them
appear as rounded highlights as sed to areas of over
exposure. This effect helps to over emphasise the foreground
subjects and smooth out the background, creating a well balanced
image. Finally, Sigma applies Super Multi Layer coatings to all
lens elements, which work to create an optimum colour balance by
reducing the damaging effects of ghost and flare. The coatings
also help to maximise light transmission to the DSLR’s sensor.
A Lens Most Applicable For......
--------------------------------
Packing so many focal lengths and optimising features, the Sigma
18-250mm replaces the need to carry several lenses making it the
ultimate “all in one” DSLR lens. The compact size, 25% weight
reduction and a zoom lock function, make the lens extremely
portable and ideally suited to travel as well as general day use.
With ability to instantly switch from a telephoto to macro lens
and assisted by various features, it is suited to a wide range of
specific uses from close-up wildlife photography, landscapes as
well as long distance pursuits. The OS system and HSM also ensure
that the lens performs well when composing handheld s both
near and far. If you are tired of carrying around and
continuously interchanging your lenses to get the right ,
then the Sigma 18-250mm is a perfect all round solution for you.
Legal Discler
----------------
Gebrauchtware o Bei diesem Artikel findet die
Differenzbesteuerung Anwendung (§ 25 a Abs. 2 UStG), so dass die
anfallende MwSt nicht getrennt ausgewiesen werden kann.
P.when('A').execute(function(A) {
A.on('a:expander:toggle_description:toggle:collapse',
function(data) {
window.scroll(0, data.expander.$expander[0].offsetTop-100);
});
});
Box Contains
------------
Sigma 18-250mm f/3.5-6.3 DC Macro HSM
Lens Hood
Front and Rear Caps
Instruction Manual
1 Year Warranty Card
See more ( javascript:void(0) )
- Small and lightweight superzoom lens perfect for travel photography.
- Incorporates newly developed Thermally Stable Composite for a smaller construction.
- SLD and Aspherical lens elements.
- Minimum focusing distance of 35cm and a maximum magnification of 1:2.9 makes it ideal for close-up photography.
- Defocus Control lenses have an image circle that covers APS-C size image sensors. Not for use on digital cameras having image sensors larger than APS-C size or on 35mm or APS film cameras, as vignetting will occur. The angle of view varies depending on which camera the lens is ed on. To find the 35mm camera-equivalent focal length, multiply the DC lens focal length by the crop factor (digital multiplier) of 1.5, 1.6, or 1.7, depending on the brand of DSLR camera on which the lens will be used.