Sigma 18-50mm F2.8 EX DC Macro Lens
For Pentax K Mount
Lens Description
The Sigma 18-50mm F2.8 EX DC Macro is a wide to short telephoto zoom designed for cameras with a APS-C (1.5X) sensor. This bright constant-aperture zoom covers a 18mm to 50mm focal-range. It provides the same field of view as a 27-75mm lens on a Full-Frame camera.
This zoom can focus down to 28cm from the imaging plane which gives it a maximum magnification of 0.33X. The lens supports autofocus and features a switch to disengage AF for focusing manually. A built-in focus motor is used to set the focus-distance. It allowed Sigma to optimize the motor precisely for this lens in order to maximize performance.
This lens has a Pentax K mount. It directly attaches and is fully compatible with all Pentax K mount cameras with APS-C (1.5X) sensors. Sigma also makes this lens for Canon EF, Four-Thirds, Sony A and Sigma S mounts.
Sigma 18-50mm F2.8 EX DC Macro Specifications
Brand | Sigma | Model | 18-50mm F2.8 EX DC Macro |
---|---|---|---|
Mount | Max FLM | 1.5X | |
Focal Range | 18 - 50mm | View Angle | 70 - 28° |
Max Aperture | F/2.8 | Min Aperture | F/22 |
Min Focus | 28cm | Magnification | 0.33X |
Filter Size | 72mm | Aperture Blades | 7 |
Size (D x L) | 79 x 86mm | Weight | 450g |
Tilt | N / A | Shift | N / A |
Stabilization | Protection | None | |
Zoom Drive | Mechanic | Focus Drive | AF with MF Switch |
Zoom Mechanism | External | Focus Mechanism | Internal |
Hood | Bayonet | Focus Motor | Internal |
Perspective | Rectilinear | Introduced | 2006-02-24 |
Similar Lenses For Pentax K Mount
Here are the newest lenses matching or exceeding major specifications of the Sigma 18-50mm F2.8 EX DC Macro. They cover the same focal-range with a similar aperture and are available for the same lens mount and imaging circle coverage.
Pentax HD DA* 16-50mm F/2.8 PLM AW
Pentax HD DA 16-85mm F/3.5-5.6 ED DC WR
Sigma C 18-300mm F/3.5-6.3 DC Macro OS HSM
Sigma C 18-200mm F/3.5-6.3 DC Macro OS HSM
Pentax HD DA 20-40mm F/2.8-4 ED DC WR Limited
Sigma C 17-70mm F/2.8-4 DC Macro HSM
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Sigma 18-50mm F/2.8 Facts
18-50mm Focal-Range | F/2.8 Constant Aperture |
72mm Filter Thread | AF with MF Switch |
Pentax K Mount | APS-C (1.5X) Coverage |
450g Lens Weight | 79 x 86mm (D x L) |
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