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$449.00

Sigma 28mm f/1.8 EX DG ASPHERICAL MACRO

Sigma 28mm f/1.8 EX DG ASPHERICAL MACRO lens
 

Full frame sized image

Lenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either.

 

No Ultrasonic AF

Lenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses.

 

No stepping motor AF

Lenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses.

 

No Low Dispersion lens element is used

Low Dispersion lens elements help to reduce chromatic aberration.

 

Not stabilized

Image stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule.

 

Metal mount

Cheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important.

 

No Internal Focusing

Internally focusing lenses don't change their size while setting focus.

 

Not Sealed

Weather sealed lenses are protected from dust and water. While they are not water proof, these lenses can be used in rain and other humid environments. Some sealings only provide protection against dust or water, not both. Sealing is only available when the lens is used on a similarly weather sealed camera body.

 

No drop-in filter support

Drop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type.

This large-aperture wide-angle lens boasts a maximum magnification of 1:2.9. Its floating focus system enables close-ups up to a minimum shooting distance lens to subject of lens than 20 cm. With minimal vignetting, superior peripheral brightness is ensured. Aspherical lens elements are used to compensate for distortion and aberrations. The focus mechanism employs a linaer-motion focus system with a non roating front barell and an easy-to-use ""Petal-type hood"" is provided as a standard accessory.

Sigma 28mm f/1.8 EX DG ASPHERICAL MACRO Specification

Available mount(s) Canon EF, Nikon F, Pentax K, Sony / Minolta A, Sigma
Application(s) Closeup, Landscape, Architecture
Category(s) Wide angle prime
Multiplier
Stabilizer no
Focal length 28 mm (prime)
Lens construction 10 elements in 9 groups
Angle of view 35mm: 75.4°
digital: 47.9°
Number of blades 9
Maximum aperture f/1.8
Minimum aperture f/22
Minimum focusing distance 20 cm
Magnification 0.34×
Filter size 77 mm
Size ∅ 83.6 × 82.5 mm
Weight 500 g
Notes
AF speed N/A
AF sound
Internal focusing no
Internal zoom N/A
Fix front lens N/A
Mount type metal
Weather sealed no
Drop in filter no
Ultrasonic AF no
Stepping motor AF no
APS-C sized circle no
Low dispersion lens element no
Hard case N/A
Soft case N/A
Lens hood LH825-03
printable lens hood
Tripod adapter N/A
Discontinued yes
Sigma 28mm f/1.8 EX DG ASPHERICAL MACRO Specification

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