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Pentax DA 18-250mm lens
Dennis Hissink : October 2nd 2007 - 00:00 CET
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PentaxPentax DA 18-250mm lens : Pentax Corporation is pleased to announce the marketing of the smc Pentax DA 18-250mmF3.5-6.3ED AL [IF] interchangeable zoom lens, designed for exclusive use with Pentax digital SLR cameras. With its approximately 14-times zoom ratio covering from wide-angle to super-telephoto ranges, this versatile lens handles a great variety of applications without the need for lens changes. When mounted on a Pentax digital SLR camera body, the Pentax DA 18-250mm zoom lens offers an approximately 14-times zoom ratio that covers the range from 27.5mm wide angle to 383mm super-telephoto in the 35mm format. Without the need for lens changes, it can be used for a wide variety of applications.
Pentax DA 18-250mm AL IF lens
The applications ranges from such standard applications as landscape photography, snapshots and portrait at frequently used focal lengths, to specialized applications like sports and wildlife photography at the super-telephoto range. Incorporating one extra-low dispersion (ED) and two aspherical (AL) optical elements in its optics, the smc Pentax DA 18-250mmF3.5-6.3ED AL [IF] lens effectively compensates for the adverse effects of various aberrations, assuring outstanding image description.

smc Pentax DA 18-250mm

Pentax DA 18-250mm lens - Design
This lens is exclusively designed for use with Pentax digital SLR cameras, with its image circle perfectly proportioned to their image sensor size (23.5mm x 15.7mm). Since the coating, curvature and position of all optical elements are optimized for the characteristics of digital images, it effectively minimizes annoying flare and ghost images in the resulting images. Furthermore the new Pentax 18-250mm lens offers An extra-short minimum focusing distance of 0.45 meters over the entire zoom range and an Inner-focus (IF) mechanism to avoid lens extension during focusing.

Pentax DA 18-250mm specifications
• Lens mount: Pentax KAF mount
• Lens construction: 16 elements in 13 groups
• Angle of view: 76° ~6.5° (when mounted on a Pentax D-SLR body)
• Number of diaphragm blades: 7
• Minimum aperture: F22 ~ F45
• Minimum focusing distance: 0.45m (1.48ft)
• Filter size: 62mm
• Maximum magnification: 0.28X
• Dimensions: 75mm (maximum diameter) x 85.5mm (length)
• Weight: 455g (16.0oz) (without lens hood)

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