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Pentax SMC DA 60-250mm f4 ED (IF) SDM Lens

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Pentax SMC DA 60-250mm f4 ED (IF) SDM Lens

Name: Pentax SMC DA 60-250mm f4 ED (IF) SDM Lens
Brand: Pentax
SKU: 27075141247
Price: 1349.0 GBP
Availability: InStock

PentaxSKU: 27075141247

Price:

£1,349.00

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Pentax SMC DA 60-250mm f4 ED (IF) SDM Lens

High-performance super-telephoto zoom lens with constant f/4.0 aperture throughout the zoom range
Two elements of ED (extra-low dispersion) glass
Speedy SDM autofocus motor provides a fast, silent response with Quick-Shift full-time manual override
Conventional AF drive built into body provides body-driven AF for older Pentax digital SLRs
Pentax's unique SP water and dirt-repelling coating on both external surfaces
Dust and moisture-resistant housing
9-Bladed aperture diaphragm
Rigid, detachable tripod collar included
Exchange between horizontal and vertical composition by rotating camera within tripod collar (when employing monopod/tripod)
Equivalent to a 90-375mm f/4.0 lens upon 35mm SLR cameras
Dedicated hood with removable window to easily adjust a polarizer's position

Finally available as a serious zoom telephoto for sports, wildlife, and other applications, the Pentax DA* 60-250mm f/4 ED (IF) SDM Autofocus Lens truly adds an important element to the collection of lenses for the Pentax system. They've had some little jewels which any brand would covet, but in the telephoto department, they've not had a 'big gun' since the film days. Now they do; the DA* 60-250 will give you professional results for many of life's sporting, action, and wildlife opportunities.

The housing of the 60-250mm f/4 ED is ready for harsh conditions, with great dust and weather sealing to go along with the improvements in coating technology to repel moisture and debris from the glass. The DA* 60-250's complex 15-element optical formula features a pair of ED Extra-Low Dispersion glass elements to help reduce any effects of chromatic aberration. Shoot the action into the sun, and expect the edges of your subject to be crisp and clean.

The focusing system of this lens is both SDM and normal Pentax KAF2 (with a screw on lens barrel to drive AF from body-based motors). This allows the lens to move incredibly quickly with the SDM system, driven by an internal motor and with the Quick-Shift system providing manual focus override capacity to you at all times with no buttons to switch. You'll also retain the standard AF performance with the older Pentax digital SLR bodies not featuring SDM capacity.

Note:
Not compatible with 'full frame' cameras.


Focal Length	60 to 250mm (35mm Equivalent Focal Length 90 to 375mm)
Maximum Aperture	f/4
Minimum Aperture	f/32
Lens Mount	Pentax K
Format Compatibility	APS-C
Angle of View	26.5° to 6.5°
Minimum Focus Distance	3.6' / 1.1 m
Close-Up Magnification	0.14x
Optical Design	15 Elements in 13 Groups
Diaphragm Blades	9
Focus Type	Autofocus
Image Stabilisation	No
Tripod Collar	Yes
Filter Size	67 mm (Front)
Dimensions	(ø x L) 3.2 x 6.6" / 8.13 x 16.76 cm
Weight	1.04 kg

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.