Sigma releases updated 18-200mm F3.5-6.3 DC Macro OS HSM superzoom
CES 2014: Sigma has announced the 18-200mm F3.5-6.3 DC Macro OS HSM | C, a superzoom lens for APS-C / DX format SLRs. Wth a 28-300mm equivalent zoom range, it uses a revised optical formula compared to its predecessor from 2011, however it's smaller and lighter, and has a shorter minimum focus distance giving 1:3 magnification. It will be available in Canon, Nikon, Pentax, Sigma, and Sony mounts; as usual the Pentax and Sony versions won't have optical stabilisation, but rely on the camera body' built-in stabilisation.
The lens employs an ultrasonic-type focusing motor, and according to Sigma uses improved autofocus algorithms. It's also compatible with Sigma's USB dock (allowing the user to update the firmware when required), and Sigma's Mount Conversion service. Availability is still to be confirmed but Sigma USA has set a recommended price of $399.
C | Contemporary Sigma 18-200mm F3.5-6.3 DC Macro OS HSM
As entry level lenses for digital SLR cameras, standard zoom lenses are capable of many types of photography. With this lens, you can enjoy the variation of different angle-of-views covering from a wide-angle of 18mm (equivalent to 27mm on a 35mm camera) to a tele-photo of 200mm (equivalent to 300mm on a 35mm camera), as well as Macro. Moreover, thanks to the OS (Optical Stabilizer) functionality, while pursuing convenience of handheld photography for close-up, indoor and night time photography, SIGMA incorporated the latest technology freely in order to achieve its compact size as an everyday lens. SIGMA proposes a new standard zoom lens.
- Accessory: Petal-Type Hood (LH676-01) supplied
- Corresponding AF Mounts: SIGMA, Canon, Sony, Nikon, Pentax
- The Appearance and specifications are subject to change without notice
- For Sony and Pentax, the OS function is not incorporated
1. Contemporary line that covers a wide range of photography
SIGMA is organizing all its interchangeable lenses into three product lines; Contemporary, Art and Sports. Among the three, the Contemporary line is a high performance line which incorporates the very latest technology making it possible to accommodate both high optical performance and compactness for use in various photography situations. Sigma has solved the difficult problem of keeping the size and weight down without compromising optical performance and function with the latest technology. This lens covers frequently used wide-angle to tele-photo, as well as macro photography.
2. New standard zoom up to 200mm
SIGMA has always been producing a high performance standard zoom lens, dedicated for digital DSLR cameras, that covers up to 200mm by reflecting the latest technology.
In 2005, SIGMA released 18-200mm F3.5-6.3 DC as a smallest and lightest all-rounder lens in class that covers from wide-angle to tele-photo range. SIGMA, in 2007, incorporated OS (Optical Stabilization) functionality, and in 2011, has successfully made the size of the lens even more compact.
Now, this new lens has been redeveloped as the standard zoom lens from SIGMA’s new product line, which has higher performance, is even smaller and lighter-weight, and on top of that, includes “the macro feature”. As an entry level interchangeable lens, it is capable of many photographic scenes.
3. Diameter reduced by 4.6mm compared to its predecessor
We pursued the compactness as an ideal everyday lens. From an early stage of development, SIGMA was determined to make the lens size compact, for example, by incorporating double-sided aspherical lens elements and downsizing the motor. As a result, while the predecessor had a diameter of 75.3mm, this lens has reduced it to 70.7mm, which has the difference of 4.6mm. It also achieves -11% in volume ratio compared to its predecessor. It is one of the smallest in its class of lenses with more than a 7x zoom ratio, and is more comparable in size to a generic standard zoom lenses.
4. High rendering performance throughout the entire zoom range
With our Contemporary line, the lens is required to fulfill the maximum potential while achieving a compact and light-weight construction. This lens incorporates SLD (Special Low Dispersion) glass elements that have a high refractive index, and corrects chromatic aberration at the telephoto-end very well. Moreover, aspherical lens elements, including double-sided aspherical lenses, ensure a compact size and excellent correction of distortion. This also helps to produce superior rendering performance throughout the entire zoom range from wide-angle to tele-photo and macro photography.
5. Close-up photography
One of the biggest features of this lens is that it is possible to shoot subjects as close as Macro lenses. This lens features a minimum focusing distance of 39cm and a maximum magnification ratio of 1:3. It offers the versatility for shooting close-ups of fashion accessories, cuisine, flower arrangements and much more without changing the lens. Its working distance is 14.7cm, and it is suitable for shooing images with natural light as it keeps the shadows of camera and lens off of the image. On its lens barrel, it indicates the maximum shooting magnification at each focal length, and it is so convenient for a photographer that the size of the object in the image sensor becomes easily recognizable. Uncompromising in every aspect of lens design, Sigma has even chosen to engrave the product name on the front of the lens to prevent reflections of the letters during close-up photography.
6. Incorporating new composite TSC
In product development of cameras and lenses, it is crucial to lay out main components, metal parts and polycarbonate, to optimize and ensure each feature. This lens has incorporated TSC (Thermally Stable Composite) that has the same level of thermal shrinkage as aluminum and little elasticity, especially in temperature changes. Since thermal shrinkage is low, it has a high affinity to metal parts that contributes to high precision in product manufacturing. It also results in slimmer mechanical parts, such as the zoom ring and scaling.
This lens incorporates an OS system which offers superior stabilization, making it possible to compensate for camera shake even in macro range photography where a small blur can be easily identified.
*1. The closer the lens is to the object, the less effective the OS function is.
*2. For Sony and Pentax, OS function is not incorporated.
Designed to minimize flare and ghosting
Flare and ghosting were thoroughly measured and monitored from the lens development stage to establish an optical design which is resistant to strong incidental light such as backlight. The Super Multi-Layer Coating reduces flare and ghosting and provides sharp and high contrast images even in backlit conditions. Attaching the matched petal type hood, which is supplied, will provide extra protection from flare and ghosting.
Incorporating Rounded Diaphragm
The 7 blade-rounded diaphragm creates an attractive blur to the out-of-focus areas of the image. Hyper Sonic Motor HSM (Hyper Sonic Motor) delivers high AF speed and extremely quiet performance. With the latest AF algorithm, smoother AF is achieved.
Brass made bayonet mount
This lens incorporates a brass made bayonet mount which has both high accuracy and durability. A special treatment to reinforce its strength is applied to the surface giving it greater strength and making it highly resistant to long-term use.
Ease of use
The new product lines incorporate rubber for the attachment part of the provided lens hood. For better usability, the design of the lens cap and AF / MF changeover switch has been improved.
Newly developed “SIGMA USB DOCK” exclusively for new product lines
Based on these new lines, we have developed special software (SIGMA Optimization Pro) that can update the lens firmware and adjust parameters such as focus.
Evaluation with Sigma’s own MTF measuring system “A1”
We used to measure lens performance with MTF measuring system using conventional sensors. However, we’ve now developed our own proprietary MTF (modulation transfer function) measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of our quality control inspections. The SIGMA 18-200mm F3.5-6.3 DC Macro OS HSM will all be checked using this “A1” before they are shipped.
“Made in Japan”
The vast majority of Sigma's manufacturing - right down to molds and parts - is carried out under an integrated production system, entirely in Japan. We are now one of the very few manufacturers whose products are solely "made in Japan". We like to think our products are somehow imbued with the essence of our homeland, blessed as it is with clean air and water, and focused, hard-working people. We pride ourselves on the authentic quality of Sigma products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Our sophisticated products have satisfied professionals and lovers of photography all over the world, because our manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of our experts.
Applicable for the Mount Conversion Service
As an experienced lens manufacturer that has been creating a diverse range of interchangeable lenses, we have started the innovative chargeable service “Mount Conversion Service”. With this service, the mount of your current SIGMA lenses can be changed to another mount of your choice. It gives a new life to your favorite lenses when you wish to use it on a different camera body.
|Lens type||Zoom lens|
|Max Format size||APS-C / DX|
|Focal length||18–200 mm|
|Image stabilization||Yes (Sony and Pentax versions don't have OS)|
|Lens mount||Canon EF-S, Nikon F (DX), Pentax KAF3, Sigma SA Bayonet, Sony/Minolta Alpha DT|
|Number of diaphragm blades||7|
|Aperture notes||Rounded diaphragm|
|Special elements / coatings||SLD glass elements, Double-sided aspheric lenses|
|Minimum focus||0.39 m (15.35″)|
|Full time manual||Unknown|
|Weight||430 g (0.95 lb)|
|Diameter||71 mm (2.8″)|
|Length||86 mm (3.4″)|
|Zoom method||Rotary (extending)|
|Filter thread||62 mm|
|First, Let me check its expiry date. by rajeev22675|
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