Sigma 18-250mm f3.5-6.3 DC Macro HSM - Pentax fit

With the highly versatile, ultra-compact Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM zoom lens, high-quality images are assured across the zoom range, while the state of the art Hyper Sonic Motor ensures fast and quiet auto-focusing. Despite its small dimensions, the lens boasts a massive 13.8x zoom ratio as well as incorporating Sigma's unique Optical Stabiliser (OS) technology to help counter ...

Key Features:

Superior image quality
One SLD (Special Low Dispersion) glass element offers excellent correction of colour aberration and three aspherical lenses, including a double-sided aspherical lens, prevent and correct all types of aberrations such as astigmatism, achieving high image quality throughout the entire zoom range.

Reduced Ghosting and Flare
Sigma’s Super Multi-Layer Coating reduces flare and ghosting, ensuring sharp and high contrast images even in backlit conditions.

Minimum focusing distance of 35cm throughout the entire zoom range
A minimum focusing distance of 35cm throughout the entire zoom range and a maximum magnification ratio of 1:2.9 makes this lens ideal for close-up photography. When the APS-C size sensor is taken into consideration, the effective maximum reproduction ratio becomes 1:2.

Quiet and fast AF
An inner focusing system and the incorporation of HSM provide fast and quiet auto-focusing. *AF will not function if the Pentax camera bodies do not support HSM.

Petal-type hood
This lens is supplied with a Petal-type hood to block out extraneous light and reduce internal reflections.

Magnification scale
A magnification scale is displayed on the lens barrel, ensuring ease of use.

*Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

Lens jargon

HSM (Hyper-Sonic Motor)
This lens uses a motor driven by ultrasonic waves to provide a quiet, highspeed AF.

DC (DC Lens)
These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction.

Specifications

• Lens Construction - 16 Elements in 13 Groups
• Angle of View (SD Format) - 69.3 - 6.5 degrees
• Number of Diaphragm Blades - 7 Blades (Rounded Type)
• Minimum Aperture - F22
• Minimum Focusing Distance - 35cm
• Maximum Magnification - 1:2.9
• Filter Size - 62mm
• Dimensions - Diameter 73.5mm x Length 88.6mm
• Weight - 471g