Nikon AF Nikkor 35-70mm f/2.8D: Cleaning Haze Effectively

Introduction

The Nikon AF Nikkor 35-70mm f/2.8D is a versatile zoom lens known for its sharp optics and fast aperture. However, over time, it may develop a haze that can degrade image quality. This guide provides comprehensive strategies, tips, and tricks to effectively clean the haze and restore the lens's pristine performance.

Understanding Lens Haze

Haze is a thin, whitish film that can form on the internal or external lens elements. It is caused by various factors, including:

• Prolonged exposure to moisture
• Dust and dirt buildup
• Chemical contamination
• Improper storage

Haze scatters incoming light, reducing contrast and image sharpness. It can also affect color accuracy and introduce a milky appearance to photographs.

Cleaning Strategies

1. External Cleaning

• Use a soft, microfiber cloth or lens cleaning tissue.
• Gently wipe the lens surfaces in circular motions, starting from the center and moving outwards.
• Avoid using harsh cloths or detergents, as they can scratch the lens coating.

2. Internal Cleaning

• Removal of the Front Element:
  • Carefully unscrew the front retaining ring using a rubber lens opener.
  • Remove the front element and clean the surface using a microfiber cloth or lens cleaning solution.

    • Cleaning the Aperture Blades:

  • Close the aperture to f/22.
  • Use a cotton swab moistened with lens cleaning fluid to gently wipe the aperture blades clean.

3. Chemical Cleaning

• Using Lens Cleaning Solution:
  • Apply a small amount of lens cleaning solution to a microfiber cloth or cotton swab.
  • Gently wipe the lens surfaces, being careful not to damage the coating.

    • Using Isopropyl Alcohol (IPA):

  • Isopropyl alcohol (91% or higher) can be used to dissolve stubborn haze.
  • Dilute IPA with an equal part of distilled water and apply it sparingly to a microfiber cloth.
  • Wipe the lens surfaces gently and allow it to evaporate completely.

Tips and Tricks

• Use a Clean Environment: Clean the lens in a dust-free and well-ventilated area.
• Handle with Care: Wear gloves to avoid transferring oils from your hands to the lens.
• Test the Cleaning Solution: Before applying any cleaning solution to the lens, test it on an inconspicuous area to ensure it does not damage the lens coating.
• Avoid Over-Cleaning: Clean the lens only when necessary. Excessive cleaning can damage the lens coating.
• Store the Lens Properly: Keep the lens in a dry, dust-free environment when not in use. A camera bag with a desiccant packet can help prevent moisture buildup.

Effective Strategies for Preventing Haze

• Protect from Moisture: Avoid exposing the lens to rain, snow, or high humidity.
• Use a Lens Hood: A lens hood helps shield the lens from dust, dirt, and moisture.
• Store Properly: Store the lens in a cool, dry place with a desiccant packet to absorb moisture.
• Regular Cleaning: Clean the lens periodically to remove dust and prevent the formation of haze.

Table 1: Recommended Lens Cleaning Products

Table 2: Lens Cleaning Frequency

Table 3: Signs of Lens Haze

FAQs

1. Can I use my breath to clean the lens?
   - No, breathing on the lens can leave behind moisture and oils that can attract dirt and dust.

2. Can I use household cleaning products to clean the lens?
   - No, household cleaners contain harsh chemicals that can damage the lens coating.

3. How often should I clean my lens?
   - The cleaning frequency depends on lens usage. Refer to Table 2 for recommended guidelines.

4. Is it safe to remove the front element of the lens?
   - Yes, but proceed with caution and only if necessary.

5. Can I use compressed air to clean the lens?
   - Yes, but be careful not to blow dust or moisture into the lens.

6. Is it necessary to disassemble the lens to clean it?
   - In most cases, no. External and internal cleaning should suffice.

Call to Action

If your Nikon AF Nikkor 35-70mm f/2.8D lens has developed haze, don't despair. By following the strategies, tips, and tricks outlined in this guide, you can effectively clean the haze and restore the lens to its former glory. Remember to handle the lens with care, use appropriate cleaning products, and store it properly to prevent future haze formation.