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Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit Lens

Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit Lens
Sigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit LensSigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit LensSigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit LensSigma 18-300mm F3.5-6.3 DC MACRO OS HSM Contemporary Nikon Fit Lens

Model:  SIG18300CN
Brand:  Sigma
Zoom Lens (Wide-Tele):  18-300
Aperture:  F3.5-6.3
Optical Image Stabilisation System:  O.S
Lens Mount Fitting:  Nikon AF-S DX
Lens Construction:  17 Elements in 13 Groups
Aperture Blades:  7 Blades(Rounded Diaphragm)
Focus Distance:  Minimum 39cm / 15.4in.
Filter Thread Size:  72mm
Lens Diameter and Length:  79mm x 101.5mm / 3.1in. x 4.0in.
Weight:  585g/20.6oz.



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Who decides it is impossible to combine portability with image quality? It is understood that the relationship between optical performance and shape of lens is more like trade-off, and we may need to prioritize one over the other. A high ratio zoom lens often requires compactness and enhancement of additional features, to be capable enough to cover various shooting scenes with convenience and versatility. However, SIGMA still believes that image quality is what matters the most. When travelling with minimal equipment the lens needs a wide zoom range especially as a telephoto lens may be needed unexpectedly without time to switch lenses.
This lens incorporates 4 FLD (F Low Dispersion) glass elements, which have performance equal to fluorite plus 1 SLD (Special Low Dispersion) glass element. It enables this lens to minimize the chromatic aberration, especially toward the telephoto-end, and provide clear image quality with high color fidelity
* FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images.

The most appropriate optical glass elements are selected to optimize all focal lengths of the lens. From wide angle to telephoto and macro ranges, it offers superior image quality throughout the entire zoom range. It compensate for the distortion very well, especially at wide-end, and carries extraordinary expressive capability from the center to the corners.
A close-up lens is exclusively developed for this product (sold separately), which will not affect the optical performance of the original lens
It offers a maximum magnification ratio 1:2 and changeable angles of view enables zoom-macro photography
Exclusive close-up lens (optional accessory)
The minimum focusing distance of the lens is 39cm, its maximum magnification ratio is 1:3 and the working distance is 14cm, which is similar to macro lenses. In addition to this, a close-up lens, AML 72-01 (optional accessory), is developed exclusively for this product. It makes the rendering very constant across the zoom range, and it enables higher performance in macro photography at 1:2. Even when this close-up lens is attached, the image taken at maximum magnification ratio, at 300mm, infinity, shows very little difference in MTF.
* Focus is at infinity, and the recommended shooting range is 80-300mm
Zoom-macro for enhanced macro photography
Just by rotating the zoom ring, it enables photographers to take close-up pictures of subjects such as jewelry and flowers. Maximum magnification ratio at respective focal lengths is indicated on the lens barrel, thus it is easy to see what the object size will be at the sensor. Furthermore, in order to secure a clear field of view, the design of this lens is very thorough, even down to the precise position of the engraved letters on the lens

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