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Sigma launch two Macro EX DG lenses

Sigma launch two Macro EX DG lenses - Optimized image quality for Digital SLR cameras

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Category : Interchangeable Lenses
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Sigma have added two macro lenses to their EX DG range that incorporate the very latest optical technology making them idea for digital SLR cameras. The Macro 50mm F2.8 EX DG and Macro 105mm F2.8 EX DG


Sigma launch two Macro EX DG lensesThe Macro 50mm F2.8 EX DG

The new advanced lens design corrects various aberrations. This macro lens is specially coated to get the best color balance with Super Multi Layer (SML) coating that cuts down ghost caused by reflections from the digital image sensor. This lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras. The new Macro 50mm F2.8 EX DG incorporates a "Floating Internal Focusing" (FIF) system which minimizes the aberration in entire focusing range.enabling this lens to photograph objects precisely not only at life-size reproduction but also at infinity. The lens has a minimum focusing distance of 18.9cm (7.4") and is capable of true macro photography with a maximum magnification of 1 1. Experience the enjoyment of real life-size macro photography. This lens is equipped with a "Focus Limiter Switch" that limits the autofocus range, allowing the camera to focus more quickly. This lens has a minimum aperture of f/45 for Sigma, Canon and Konica Minolta mounts and f/32 for Nikon and Pentax mounts which produces a tremendous depth-of-field. A screw-in hood is included, for convenient use of circular polarizing filters. It is also possible to attach a 72mm filter in front of the lens hood.
This macro lens has an equivalent field of view of 85mm on a digital SLR camera (when used with the SD-10).

Specifications
Focal length 50mm
Minimum aperture f/45 (for Sigma, Canon and Konica Minolta mounts) f/32 for Nikon and Pentax mounts
Lens construction 10 Elements in 9 Groups
Angle of view 46.8°
Number of diaphragm blades 7pcs
Minimum focusing distance 18.9cm
Maximum magnification 1 1
Filter size 55mm
Lens hood Screw-in Type
Dimensions Max. Diameter 71.4mm x Length 64mm
Mounts (AF) Sigma, Canon, Nikon, Pentax, Minolta
Weight 315g


Sigma launch two Macro EX DG lensesMacro 105mm f/2.8 EX DG

The Macro 105mm f/2.8 EX DG lens is a medium telephoto macro lens that employs a new design concept for digital SLR cameras. Its new lens power layout produces an excellent optical performance. The new DG lens is has Super Multi Layer (SML) coating that's designed to reduce the influence of harmful light caused by reflections from the digital image sensor. Its outstanding optical performance provides the ultimate correction against lateral chromatic aberration and distortion.
This lens boasts compact dimensions of 74mm (maximum diameter) and 95mm (overall length). It has a filter size of 58mm and, at just 450gms, is also extremely lightweight. The minimum focusing distance of 31.2cm (12.2") is capable of macro photography with a maximum magnification of 1:1. It is possible to enjoy photography from life-size close-up to infinity. Sigma, Canon and Konica Minolta mounts have a minimum aperture of f/45 for incredible depth of field (or f/32 for Nikon and Pentax mounts). This lens is equipped with a "Focus Limiter Switch" that limits the AF range so improving the speed and accuracy of autofocus. It also incorporates a Dual Focus (DF) system that is designed to make the lens easy to hold during auto focusing. The large focus ring offers smooth and positive action whilst focusing manually. A screw-in hood is included, for convenient use of circular polarizing filters. This telephoto macro lens has an equivalent field of view of 178mm on a digital SLR camera (when used with the SD10).

Specifications
Focal Length 105mm
Minimum Aperture f/45 (for Sigma, Canon and Konica Minolta mounts) f/32 for Nikon and Pentax mounts
Lens Construction 11 Elements in 10 Groups
Angle of View 23.3°
Number of Diaphragm Blades 8pcs
Minimum Focusing Distance 31.2cm (12.2")
Maximum Magnification 1:1
Filter Size 58mm
Lens Hood Screw-in Type
Dimensions Max. Diameter 74mm (2.9") X Length 95mm (3.7")
Mounts (AF) Sigma, Canon, Nikon, Pentax, Minolta
Weight 450gr/ 15.8oz

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