Pentax HD D FA 70-200mm f2.8ED DC AW Telephoto-Zoom Lens Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective use of your Pentax HD D FA 70-200mm f2.8ED DC AW Telephoto-Zoom Lens. Please read it thoroughly before using the product and retain it for future reference. This lens is designed to deliver superb imaging quality and exceptional resolving power for Pentax KAF cameras.

2. Product Overview

The Pentax HD D FA 70-200mm f2.8ED DC AW is a high-performance telephoto zoom lens featuring a constant maximum aperture of F2.8 across its entire 70mm to 200mm focal range. It incorporates advanced optical technologies and robust construction for reliable performance in various conditions.

Figure 2.1: Front-side view of the Pentax HD D FA 70-200mm f2.8ED DC AW Telephoto-Zoom Lens, showcasing its robust design and control rings.

Key Features:

• In-Camera Shake Reduction (SR): Compatible with PENTAX digital SLR K-series cameras, which feature a built-in SR mechanism. This ensures image stabilization benefits for any compatible lens.
• PENTAX Star Series Lens: A new generation, high-performance Star series lens designed to deliver superb imaging quality and exceptional resolving power by minimizing various aberrations.
• PENTAX Original Lens Coating: Features advanced coating technologies, including the Aero Bright Coating II for exceptionally low reflectance and the HD Coating for extra sharp, high-contrast images free of flare and ghosting.
• All Weather (AW) Construction: Equipped with a dependable dustproof and weather-resistant structure, featuring eight special seals to prevent the intrusion of water and dust into the lens interior.
• Rounded Diaphragm: A nine-blade, round-shaped diaphragm produces a natural, beautiful bokeh (defocus) effect up to the F2.8 aperture setting.
• DC Motor: Provides smooth and quiet autofocus (AF) operation using a built-in AF driving motor.
• Quick Shift Focus System: Allows instant switching from autofocus to manual focus operation by holding the shutter release button halfway down and turning the focus ring after the subject is in focus with the camera’s AF system.
• Focus Range Limiter: Minimizes AF operation time by allowing the user to fix the focus range to one of three sub-ranges.
• Tripod Mount Bracket: A detachable tripod mount with a newly designed integrated lock mechanism to secure the lens from falling.

Figure 2.2: Side view of the lens with the included lens hood attached, highlighting the weather-resistant seals and control switches.

Product Overview Video:

3. Setup

3.1 Attaching the Lens to the Camera

1. Ensure both the camera and lens are clean and free of dust.
2. Align the red mounting index on the lens barrel with the red mounting index on the camera body.
3. Turn the lens clockwise until it clicks into place, indicating it is securely locked.

3.2 Attaching the Lens Hood

The included lens hood helps to block excess light and reduce flare, improving image quality.

1. Align the red dot on the lens hood with the red dot on the front of the lens.
2. Turn the lens hood clockwise until it locks securely.

3.3 Using the Tripod Mount Bracket

The detachable tripod mount bracket provides stable support for the lens, especially useful for long exposures or when using a tripod/monopod.

1. Attach the tripod mount bracket to the designated area on the lens barrel.
2. Ensure the integrated lock mechanism is engaged to prevent accidental detachment.
3. Mount your tripod or monopod to the tripod mount bracket's screw hole.

4. Operating the Lens

4.1 Autofocus (AF) and Manual Focus (MF)

The lens features a switch to select between Autofocus (AF) and Manual Focus (MF) modes. For precise control, use MF. For quick focusing, use AF.

4.2 Quick Shift Focus System

This system allows for immediate manual focus adjustments even when the camera is set to autofocus. Simply hold the shutter release button halfway down to engage AF, and then turn the focus ring to fine-tune focus manually.

4.3 Focus Range Limiter

To speed up autofocus performance, especially when subjects are at a known distance, utilize the focus range limiter switch. This allows you to restrict the lens's focusing range to one of three sub-ranges, preventing the lens from hunting across its full range.

4.4 Zooming

Rotate the zoom ring on the lens barrel to adjust the focal length between 70mm and 200mm. The lens maintains a constant F2.8 aperture throughout this range.

Figure 4.1: Front view of the lens, showing the large front element and filter thread.

5. Maintenance

5.1 Cleaning the Lens

• Use a blower brush to remove dust from the lens surface.
• For smudges or fingerprints, use a clean, soft lens cloth and a small amount of lens cleaning fluid. Wipe gently in a circular motion from the center outwards.
• Never use abrasive materials or harsh chemicals on the lens.

5.2 Storage

• Always attach the front and rear lens caps when not in use.
• Store the lens in a cool, dry place, away from direct sunlight and extreme temperatures.
• If storing for extended periods, consider using a desiccant to prevent mold and mildew.

6. Troubleshooting

• Autofocus is slow or inaccurate: Check the focus range limiter setting. Ensure there is sufficient light for the AF system. Clean the lens contacts on both the lens and camera body.
• Images are blurry: Verify that the lens is securely attached to the camera. Check your camera's shutter speed and ISO settings. Ensure the lens elements are clean.
• Lens not recognized by camera: Ensure the lens is properly mounted and locked. Clean the electrical contacts on both the lens and camera body.

7. Specifications

8. What's in the Box

• Front lens cap
• Lens mount cap
• Lens Hood
• Lens case

9. Warranty and Support

This Pentax lens is backed by a limited warranty from the manufacturer. For detailed warranty information, service, or technical support, please refer to the documentation included with your product or visit the official Pentax website. Keep your proof of purchase for warranty claims.