Pentax 18-270mm f3.5-6.3 SMC DA SDM Lens

PentaxSKU: 27075219632

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Sale price£629.00

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Product Description

Pentax 18-270mm f3.5-6.3 SMC DA SDM Lens

  • High ratio zoom lens for flexibility of operation
  • Super multi-coated elements increase transmittance
  • Supersonic Direct-drive Motor
  • Extra-low dispersion elements increase colour rendition
  • Rounded diaphragm for beautiful bokeh

This high-magnification zoom lens offers a 15-times zoom ratio to cover focal lengths from wide-angle to super-telephoto, while its built-in supersonic AF driving mechanism achieves both smooth, quiet AF operation and a compact, lightweight body. Its extraordinary wide angle-to-long-telephoto zoom coverage makes this zoom lens extremely versatile and handy, as it allows the user to effortlessly capture a wide variety of subjects, ranging from landscapes and snapshots to sports events, without the need to change the lens.



15-times zoom covering the extra-wide range.
When mounted on a PENTAX K-mount lens-interchangeable digital camera body, this zoom lens offers a 15-times zoom ratio covering focal lengths from 27.5mm wide-angle to 414mm super-telephoto in the 35mm format. This allows the photographer to capture a wide range of scenes and subjects without changing lenses — ranging from such casual applications as scenery, snapshots and portraiture to long-range sports photography. Its newly designed optics are the key to achieving such wide zoom coverage in a compact, lightweight body, for optimal versatility and manoeuvrability.

Supersonic AF motor (SDM)
Thanks to the incorporation of the PENTAX-original SDM autofocus system driven by a built-in supersonic motor, this zoom lens offers exceptionally smooth and quiet autofocus operation. When mounted on an SDM-compatible PENTAX K-mount lens-interchangeable digital camera body, the focus mode is automatically switched to SDM-assisted autofocusing to ensure dependable, flawless AF operation.



Exceptional image detail
Incorporating two extra-low dispersion (ED) elements in its optics, this zoom lens delivers bright, high-resolution images even at the edges, while effectively minimising chromatic aberration.

Other features
Minimum focusing distance of 0.49m over the entire zoom range
Rounded diaphragm to produce a smooth, beautiful bokeh (out-of-focus rendition), while minimising the streaking effect of point light sources.

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Focal length (Equivalent to 35mm format) 18-270mm (27.5-414mm)
Maximum aperture F3.5-6.3
Minimum aperture F22-45
Angle of View 76°-6°
Lens construction 16 elements / 13 groups
No. of diaphragm blades 7
Closest focusing distance 0.49m
Maximum reproduction ratio 0.26x
Filter size 62mm
Diameter x length 75.8 x 89 mm
Weight 453g

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Understanding: Aperture

Aperture is the opening in a camera lens that controls how much light enters the camera. It's measured in f-stops like f/2.8 or f/8. Lower f-stop numbers mean wider openings, letting in more light and creating a shallow depth of field (blurry background). Higher f-stop numbers mean smaller openings, letting in less light and creating a larger depth of field (more of the scene in focus). Aperture also affects the quality of out-of-focus areas in the image (bokeh).

Understanding: Lens Types

Different lenses have different purposes to achieve different styles of images, some popular ones include:
Prime Lens: Fixed focal length, sharp images, great for portraits and dark settings.
Zoom Lens: Variable focal length, versatile for different shots and everyday use..
Wide-Angle Lens: Captures wide scenes like landscapes.
Telephoto Lens: Magnifies distant subjects, ideal for sports & wildlife.
Macro Lens: Perfect for close-up photography of small subjects.
Fisheye Lens: Ultra-wide perspective, creates unique images.

Understanding: Lens Mounts

Different camera brands use different lens mounts, which are like connectors that attach lenses to camera bodies. Each mount is specific to a particular brand and camera series. For example, Canon uses the EF and RF mounts, Nikon uses the F mount, Sony uses the E mount for its mirrorless cameras. These mounts dictate which lenses are compatible with which cameras. Some brands offer adapters to use lenses from other systems, but it's essential to ensure compatibility for proper functionality and autofocus performance.

Understanding: Manual and Autofocus

Manual focus and autofocus are two ways to adjust the sharpness of a camera lens. With manual focus, you turn a ring on the lens to bring the subject into focus yourself, giving you full control over what appears sharp in the image. Autofocus, on the other hand, relies on the camera's built-in technology to automatically adjust the focus for you, usually by detecting contrast or phase differences in the scene. Autofocus can be convenient, especially for fast-moving subjects or when you need to capture a quick shot, whereas manual focus allows for precise adjustments and creative control over the final image.

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