• K-Mount Lens/Full Frame Format
• 225-675mm (35mm Equivalent on APS-C)
• Aperture Range: f/4.5 to f/27
• Extra-Low Dispersion Glass Elements
• HD and Super Protect Coatings
• Direct Current AF and Quick-Shift Focus
• Focus Preset Modes and Range Limiter
• Weather-Resistant with 21 Seals
• Detachable, Rotatable Tripod Collar
• Rounded 9-Blade Diaphragm
Of all PENTAX lenses, this versatile partner offers the longest zoom. The 3X zoom ratio makes it easy to capture a variety of distant objects. Along with impressive mid to super telephoto capabilities, it offers outstanding ease of operation at an affordable price. The high build quality and weather-resistant construction, plus a total of 21 seals throughout its body, protect your photography from unforeseen weather. Focusing on your subject has never been easier with the all-new Preset Button, developed to record a focus point and save it.
Outstanding image description
State-of-the-art optics feature three ED (Extra-low Dispersion) glass elements and one super-low dispersion glass element to effectively minimize spherical and chromatic aberrations, while producing crisp, high-quality images free of color bleeding. Its MTF (Modulation Transfer Function) curve is programmed to be higher than those of conventional models in the same class to deliver high-resolution, fine-detailed images.
All-weather construction & 3x zoom ratio
Dependable, dustproof weather-resistant construction with 21 special seals effectively prevent intrusion of water and dust particles into the lens interior. When used with a weather-resistant digital SLR camera body, it assures a durable, reliable digital imaging system that performs superbly in demanding shooting setting.
Need super-telephoto coverage? When mounted on a PENTAX K-mount SLR camera body, this zoom lens covers a super-telephoto range from approx. 230mm to 690mm in the 35mm format. It's designed to be compact and light enough to handhold during long-range shooting of such subjects as wildlife, aircraft and sports.
HD coating & improved quick-shift focus system
This lens is treated with the high-grade, multi-layer HD Coating.* Compared with conventional multi-layer coatings, this PENTAX-original coating assures higher light transmittance and less reflection to deliver bright, high-contrast images free of flare and ghost images, even under demanding lighting conditions such as backlight.
The PENTAX-original Quick-Shift Focus System lets you instantly switch from autofocus to manual focus operation. Operability has been improved thanks to a three-position switch installed on this lens, allowing instant switching among QFS/A, QFS/M and MF modes. With a choice of three distinctive modes, you are assured of speedier, more accurate focusing operation for a given subject or application.
HD stands for High Definition.
auto focus and preset buttons, & more
Four AF buttons provide more stable AF operation and better hold of the lens, whether you're shooting photos with the camera in a vertical and horizontal position. You can even assign preferred settings to these AF buttons, including a Focus Preset Mode and AF Cancel Mode.
For more shooting convenience, press and hold the PRESET button to record a focus point after focusing.
The zoom lock switch prevents the lens from extending under its own weight while you are carrying the camera.
Focus Range Limiter minimizes AF operation time by allowing you to fix the focus range to one of three sub-ranges: full, close range (2 to 6m),* or far range 6m to ∞).
Angle Of View
16.5°-5.5° (w/ PENTAX DSLR)
Number Of Diaphragm Blades
9 Rounded (150mm f/4.5-8 450mm f/5.6-8)
Minimum Focusing Distance
WEIGHT (W/O HOOD): 70.5 oz (2000g)
WEIGHT (w/ hood and Tripod mount) 81.7 oz (2315g)
HD Coating, SP (Super Protect) Coating, Aero-Bright coating, Quick-shift Focus, All Weather construction
18 elements in 14 groups
2.8” x 2.7” (95 x 241.5mm)
Lens Case HS120 – 270
150-450mm (equiv. 225-675mm)