Pentax 50 mm F1.4 STAR DFA SDM AW ED Objective

Features:

New-Generation, High-Performance Star-Series Lens With Large F1.4 Maximum Aperture:
- This Lens Has Been Developed As A New-Generation Member Of The High-Performance Star Series — A Lineup Designed To Deliver Extra-Clear, High-Contrast Images With Edge-To-Edge Sharpness By Compensating Various Aberrations To A Minimum. After Conducting An Extensive Review Of The Star-Series Standards, Pentax Has Designed This Lens To Assure Greatly Improved Resolving Power, Looking Ahead To Its Use With More Advanced, Next-Generation Camera Bodies. It Provides Exceptionally High Imaging Performance Even At Open Aperture, In Addition To A Beautiful Bokeh (Defocus) Effect And An Outstanding Image Rendition At Close Ranges. Developed As The First Model Of The New-Generation Star-Series Lenses, This Large-Aperture: Standard Lens Boasts An Extra-Large F1.4 Maximum Aperture, Useful With Many Different Subjects In A Range Of Applications, Including Portraiture With An Effectively Defocused Background, And Handheld Shooting Of Indoor Scenes.

State-Of-The-Art Optical Technology:
- The Lens Is Treated With Pentax-Developed Aero Bright Coating Ii* — A Lens-Coating Nanotechnology Employing A Super-Low Refractive Film Fabrication Process. By Coupling This Advanced Lens Coating With The High-Grade, Multi-Layer Hd Coating** — Which Reduces Average Reflectance In The Visible Ray Spectrum To Less Than 50% Of Conventional Multi-Layer Coatings — This Lens Effectively Reduces Flare And Ghost Images To A Minimum Even In Demanding Lighting Conditions Such As Backlighting. By Incorporating Three Super-Low Dispersion Glass Elements And One Aspherical Element In Its Optics, It Effectively Compensates Chromatic And Spherical Aberrations, And Produces Brilliant, High-Contrast Images With Edge-To-Edge Sharpness. Since It Minimizes Distortion Even At A Focusing Distance Of Approximately One Meter, It Produces Crisp, Distortion-Free Images Over The Entire Focusing Range, From The Minimum Focusing Distance To Infinity.

- A State-Of-The-Art, Pentax-Original Lens Coating Technology Developed From Nanotechnology. It Applies A Silica Aerogel Layer With A Uniform Porous Structure Over A Regular Multi-Coating Layer To Reduce Surface Reflections Across A Wide Wavelength Range And Produce Crisp, High-Quality Images.

Dustproof, Weather-Resistant Construction:
- Developed As An Aw (All Weather) Model, This Lens Features A Dependable Dustproof, Weather-Resistant Structure With Eight Special Seals To Prevent The Intrusion Of Water And Dust Into The Lens Interior. When Paired With A Pentax Weather-Resistant Digital Slr Camera Body, It Forms 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.

Newly Developed Ring-Type Ultrasonic Wave Motor Sdm:
- This Lens Features A Newly Developed Ring-Type Sdm (Supersonic Direct-Drive Motor), Which Generates As Much As 7.5 Times The Torque Of The Conventional Sdm Installed In Existing Lenses. Thanks To This Enormous Driving Power, The Lens Assures A Smooth, High-Speed Shift Of The Heavy, Multi-Element Rear Lens Group During Focusing Operation.

Others:
- Nine-Blade, Round-Shaped Diaphragm To Produce A Natural, Beautiful Bokeh (Defocus) Effect Up To F2.8 Aperture: Setting, While Minimizing The Streaking Effect Of Point Light Sources
- A Minimum Focusing Distance Of 40 Centimeters, Effective In Capturing Images With A Defocus Effect
- Electromagnetic Diaphragm-Control Mechanism,* For Flawless, High-Precision Exposure Control During Movie Recording
- Sp (Super Protect) Coating To Keep The Front Surface Free Of Dust And Spots


Technical Specifications:

- Equivalent To 35mm Format: 76,5mm
- Maximum Aperture: F1.4
- Minimum Aperture: F16

Number Of Diaphragm Blades:
- Number Of Diaphragm Blades: 9
- Rounded Aperture （F1.4-2.8）
- Diaphragm Control: Fully Automatic
- Angle Of View: 47゜(When Attached To Pentax 35mm Slr Cameras)
- Construction: 15 Elements In 9 Groups
- Smallest Object Distance/Magnification: 0.4m / 1.3 Ft
- Magnification: 0.18x
- Filter Size: 72mm
- Mount: Kaf4
- Weight: Approx. 910g (With Hood Approx. 955g)
- Dimensions (Length X Diameter): Approx. 106 Mm X 80 Mm

Kit Content:
- Lens Hood: Ph-Rbb72 (Provided)
- Lens Cap: O-Lc72 (Provided)
- Lens Case: S120-140 (Provided)
- Lens Mount Cap K (Provided)

Special Features:
- Hd Coating
- Aero Bright Coating
- Sp (Super Protect) Coating
- Aw (All Weather Resistant)
- Sdm - Ultrasonic Motor
- Quick-Shift Focus System

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