
HD PENTAX-D FA 150-450m F4.5.6 DC AW
Dit supertelezoomobjectief is ontwikkeld om brandpuntsafstanden van 150 mm tot 450 mm te dekken — een brandpuntsafstandsbereik dat het meest wordt gevraagd door gebruikers van geavanceerde PENTAX-camera'sHet is voorzien van de originele, hoogwaardige HD-coating van PENTAX om extra scherpe, contrastrijke beelden te produceren, zelfs onder veeleisende lichtomstandigheden, zoals tegenlicht. Het bevat ook drie ED-glaselementen (Extra-low Dispersion) en een Anomalous Dispersion Glass-element om chromatische aberratie effectief te compenseren. De stofdichte, weerbestendige behuizing maakt hem ook extreem betrouwbaar en duurzaam in veeleisende buitenomstandigheden.
HD PENTAX-D FA 150-450mmF4.5-5.6ED DC AW
There are many situations where it is not possible to get close to the subject. The best example of this is wildlife photography. Whether in the zoo at home, in a wildlife park or on safari, a lens in this focal length range is an indispensable accessory.
With the 35 mm full-frame sensor of a K-1 Mark II, the focal length range of 150-450 mm is available, and the crop factor of APS-C cameras, such as the K-3 Mark III or the K-F, results in a focal length range equivalent to 230-690 mm. The teleconverter HD Pentax-DA AF REAR CONVERTER 1.4AW (limited image range) extends this range by a factor of 1.4.
Features
Outstanding image description
This lens is treated with the high-grade, multi-layer High Definition 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.
By incorporating three super-low dispersion glass elements and one Anomalous Dispersion Glass element in its optics, it effectively minimizes spherical and chromatic aberrations, while producing crisp, high-quality images with edge-to-edge sharpness, free of color bleeding.
Dustproof, weather-resistant construction
Developed as an AW (All Weather) model, this zoom lens features a dependable dustproof, weather-resistant construction with 21 special seals to prevent the intrusion of water and dust particles into the lens interior.
By pairing it with a PENTAX weather-resistant digital SLR camera body, it assures a durable, reliable digital imaging system that performs superbly in demanding shooting settings — even in rain or mist, or at locations prone to water splashes or spray.
SP (Super Protect) Coating
SP coating is a PENTAX-original special coating that provides superior performance in repelling water and oils. It is used on the front surface of the first high-performance lens for effective protection of the lens surface. This coating not only prevents adhesion of dust, water drops, oils, and other substances, but it also makes it easy to wipe off objects that adhere to the lens.
Comparison of wipe-off (oil-based ink)
A lens surface treated with SP Coating can be wiped clean more easily and completely, even after the ink has dried.
Newly installed three-position switch for Quick-Shift Focus System
In order to improve its operability, a three-position switch is newly installed on this lens, allowing instant switching among QFS/A, QFS/M and MF modes. QFS/A is an autofocus-priority mode, which allows the user to switch to manual-focusing operation only when autofocus operation is completed. QFS/M is a manual-focus-priority mode, which enables the user to switch to manual focusing at any time — even when the AF system is in operation. MF mode allows the user to instantly switch to manual focusing with a simple twist of the focus ring on the lens. With a choice of three distinctive modes, the user is assured of speedier, more accurate focusing operation for a given subject or application.
Four AF buttons installed on the lens barrel
In order to provide more stable AF operation and better hold of the lens regardless of the camera’s orientation — horizontal or vertical — this lens provides four AF buttons on its barrel — one at every 90 degrees.* The user can assign preferred settings to these AF buttons, including: a Focus Preset mode to preprogram the focus position and instantly shift the focus to that position; and an AF Cancel mode to intentionally fix the focus at a desired point during Continuous AF operation.
* Corresponding models are K-1 Mark II, K-1, KP, K-3II, K-3, K-70, K-S2, K-S1. For K-3 and K-S1, Firmware upgrade is required.
Other features
- Smooth, quiet AF operation using a lens-installed AF driving motor
- Round-shaped diaphragm to produce a natural, beautiful bokeh (defocus) effect, while minimizing the streaking effect of point light sources
- Focus range limiter to minimize AF operation time by fixing the focus range to one of three sub-ranges
- Zoom lock lever to prevent the lens barrel from free-falling
- Detachable tripod mounting with a newly designed anti-falling mechanism
【MTF Chart】
Geometric optics MTF (MTF calculated without referencing the effects of light diffraction phenomenon)
Wave optical MTF (MTF calculated referencing the effects of light diffraction phenomenon)
Sample Images
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Product specificaties
HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW
21340
Type
Supertelefoto
Brandpuntsafstand (equivalent in 35 mm-formaat)
150-450mm
Komt overeen met 230-690 mm in 35 mm-formaat (indien bevestigd op PENTAX APS-C-formaat DSLR-camera's)
Maximaal diafragma
F4.5-5.6
Minimale opening
F22-27
Kijkhoek
16,5-5,5° (indien bevestigd op PENTAX 35 mm full-frame SLR-camera's)
10,7-3,6° (indien bevestigd op PENTAX APS-C-formaat DSLR-camera's)
Lens constructie
18 elementen / 14 groepen
Aantal diafragmabladen
9
Afgerond diafragma (150 mm: F4.5-8 450 mm: F5.6-8)
Kortste scherpstelafstand
2m
Maximale reproductieverhouding
0,22x
Filtermaat
86mm
Doorsnede x lengte
Circa 95 mm x 241,5 mm (3,7 inch x 9,5 inch)
Gewicht
Ongeveer 2000 g /70,5 oz (met kap Ongeveer 2130 g /75,1 oz)
(met kap en statiefbevestiging ca. 2325 g/82,0 oz)