Do Camera Lenses Go Bad Or Degrade Over Time?

Have you ever looked at one of your favorite camera lenses, the one that’s captured countless memories and breathtaking scenes, and wondered if it’s still as sharp and pristine as the day you first cradled it in your hands? 

It’s a question that’s crossed my mind more than a few times: Do camera lenses go bad or degrade over time? 

Camera lenses can degrade over time. Factors like fungus growth, scratches, internal haze, and mechanical wear can affect their performance. Proper care and storage can prolong a lens’s lifespan, but like all equipment, they’re susceptible to wear and environmental factors.

I’m here to share some insights that I’ve learned over time. Let’s explore this together and see how use and time treat our loved glass companions.

Pentax Weather Resistant Lens

Do Camera Lenses Go Bad? Does Camera Lens Degrade Over Time?

Camera lenses, like any other piece of equipment, can degrade over time or under certain conditions. 

The rate and manner of degradation depend on various factors, including the quality of the lens, environmental conditions, and how the lens is used and stored. 

Here are some elements that contribute to the degradation of a camera lens over time and make it “go bad.”

  • Fungus Growth: One of the most common issues with lenses, especially those stored in humid environments, is the growth of fungus on the lens elements. This can degrade image quality and, if left untreated, permanently damage the lens.
  • Scratches: A lens’s front and rear elements often get scratched if not properly cared for. While minor scratches might not significantly affect image quality, more extensive or deeper scratches will.
  • Haze: Some older lenses may develop a haze on the internal elements over time. This is due to the breakdown of certain materials used in the lens construction. Haze reduces contrast and sharpness.
  • Separation of Elements: Some lenses have elements that are glued together. Over time, this adhesive breaks down, leading to separation. This causes a variety of optical issues.
  • Mechanical Wear: The moving parts of a lens, such as the focus or zoom mechanisms, wear out or break over time, especially with frequent use.
  • Oil on Aperture Blades: In some lenses, especially older ones, oil can leak onto the aperture blades, causing them to stick and not function properly.
  • Dust and Debris: While a few dust particles inside a lens typically won’t affect image quality, a significant amount of debris will. It’s also a sign that the lens is not sealed correctly, which leads to other issues.
  • Decentering: If a lens is dropped or suffers a hard impact, the elements inside can become misaligned, a condition known as decentering. Decentering leads to sharpness issues, especially on one side of the image.
  • Electronics Failure: Modern lenses often have electronic components for autofocus, image stabilization, and aperture control. These can fail over time.
  • Wear and Tear: Rubber grips, paint, and other external parts of a lens get worn out and fade over time, although this is more of a cosmetic issue.
  • UV Damage: Prolonged exposure to direct sunlight may, in some cases, lead to degradation of certain lens elements or coatings.

If a lens does show signs of any of these issues, it’s a good idea to have it checked by a repair shop. Some problems can be fixed, while others may render the lens unusable.

Camera On Fire

Camera Lens Lifespan: How Long Do Camera Lenses Last?

The lifespan of a camera lens is influenced by several factors, including its build quality, usage, and environmental conditions. 

In general, with proper care and maintenance, a high-quality lens can last for several decades. Some photographers use lenses that are 20-30 years old or even older, especially manual focus lenses, which have fewer electronic components that can fail.

Newer lenses usually offer better optics, coatings, or features that improve image quality or ease of use. As a result, even if a lens is still operational, you might want to upgrade to benefit from technological advancements.

Higher-end lenses, often labeled as “professional” lenses, are typically built with more durable materials and better construction techniques. They might have metal barrels, weather-sealing, and higher-quality glass elements. Such lenses are designed to withstand the rigors of daily professional use and can last for decades if properly maintained.

A lens used daily in challenging conditions (e.g., in photojournalism or sports photography) will wear out faster than one used occasionally for casual photography. Mechanical parts, like the focus and zoom rings, can wear out with extensive use.

Lenses exposed to harsh conditions, such as saltwater spray, sand, extreme cold or heat, and high humidity, can degrade faster. Weather-sealed lenses offer some protection against these elements but are not entirely immune.

Proper care can significantly extend the lifespan of a lens. This includes regular cleaning, storing the lens in a dry and cool place, using protective filters, and avoiding rough handling.

Drops, impacts, and accidents can damage a lens, affecting its performance or rendering it unusable. Some damages can be repaired, but still, be careful with your lens.

While the optics of a lens might remain functional for decades, the electronic components (like those used for autofocus or image stabilization) may become outdated or incompatible with newer camera bodies. 

This doesn’t mean the lens is unusable, but some features might not work with newer equipment. There are often adapters so your old lens can be used on a new camera. 

Lenses stored in humid conditions can develop fungus or haze, degrading image quality. This can be cleaned in some cases, but if left unchecked, it can permanently damage the lens.

What Can Ruin A Camera Lens?

Several factors and incidents can damage or ruin a camera lens. Here’s a list of common culprits

  1. Physical Impact: Dropping or subjecting a lens to a strong impact can cause the glass elements to crack, scratch, or shatter. It can also misalign the lens elements, leading to decentering and image quality issues.
  1. Fungus: Storing a lens in a humid environment can lead to fungus growth on the lens elements. Fungus can etch the glass and cause permanent damage, affecting image quality.
  1. Dust and Sand: Fine particles like dust and sand can get inside the lens, especially during lens changes in dusty environments. These particles can scratch the lens elements and interfere with the lens’s mechanical parts, like the focus and zoom mechanisms.
  1. Saltwater and Salt Spray: Exposure to salt water or salt spray can corrode the metal parts of a lens and damage the coatings on the lens elements. If a lens is submerged in saltwater, it can be challenging to recover its original functionality.
  1. Extreme Temperatures: Exposing a lens to extreme cold or heat can damage its internal lubricants and adhesives. This can affect the lens’s mechanical performance and potentially lead to the separation of glued lens elements.
  1. Chemicals: Accidental exposure to harsh chemicals or solvents can damage the lens coatings and the exterior finish of the lens.
  1. Oil and Grease: Over time, the lubricants used in the lens mechanism can migrate to the aperture blades or lens elements, causing them to become sticky or leaving residue on the glass.
  1. Improper Cleaning: Using abrasive materials or inappropriate cleaning solutions can scratch the lens or damage its coatings. Always use a soft microfiber cloth and a suitable lens cleaning solution.
  1. UV Damage: In rare cases, prolonged exposure to direct sunlight can lead to the degradation of certain lens elements or coatings.
  1. Improper Storage: Storing a lens in an environment with significant temperature fluctuations or high humidity can lead to issues like condensation, fungus growth, and the breakdown of internal components.
  1. Mechanical Strain: Forcing the focus or zoom ring or mounting and unmounting the lens roughly can strain or damage the mechanical components.
  1. Electronics Failure: Modern lenses have electronic components for functions like autofocus and image stabilization. These components can fail due to moisture, electrical surges, or age.
Wet Fujifilm Lens

What Can Ruin A Camera Lens At Home?

At home, there are several potential hazards that can damage or ruin a camera lens. 

  1. Improper Storage: Storing a lens in a damp or humid environment, such as a basement or bathroom, can lead to fungus growth on the lens elements.
  1. Children and Pets: Curious children or pets might knock over a camera or lens, leading to physical damage. They might also touch the lens with dirty or sticky hands, leaving residues that can be challenging to clean.
  1. Household Chemicals: Accidental exposure to household cleaning agents, solvents, or aerosol sprays can damage the lens coatings or the exterior finish of the lens.
  1. Improper Cleaning: Using household items like paper towels, tissues, or inappropriate cleaning solutions can scratch the lens or damage its coatings. Always use a soft microfiber cloth and a suitable lens cleaning solution.
  1. Cooking Fumes and Smoke: If a lens is exposed to cooking fumes, especially from oily foods or smoke, a residue can build up on the lens elements, affecting image quality.
  1. Temperature Fluctuations: Storing a lens near a heat source, like a radiator or heater, can lead to issues like condensation inside the lens or degradation of internal lubricants.
  1. Dust and Dirt: In some homes, especially those undergoing renovation or construction, there can be a significant amount of dust in the air. This dust can settle inside the lens if it’s left exposed.
  1. Spills: Accidental spills of liquids, especially sugary or sticky ones, can damage the lens. If a drink gets inside the lens, it can be challenging to clean and might leave residues.
  1. DIY Repairs: Attempting to disassemble or repair a lens without the proper tools or knowledge can lead to further damage.
  1. Direct Sunlight: Leaving a lens in direct sunlight for extended periods, especially if focused at a short distance, can concentrate the sun’s rays and potentially cause a fire or melt objects.
  1. Improper Handling: Dropping the lens or placing heavy objects on top of it can lead to physical damage.

To protect a lens at home:

  • – Store it in a padded case or bag, away from potential hazards.
  • – Keep it out of reach of children and pets.
  • – Store it in a cool, dry place away from direct heat sources.
  • – Avoid storing it in areas with high humidity or potential for water leaks.
  • – Clean it regularly using appropriate cleaning materials.
  • – Be cautious when handling the lens, ensuring it’s securely placed when not in use.

How Do I Know If My Camera Lens Is Bad?

If you suspect that your camera lens might be compromised, there are several signs and tests you can look for or perform to determine its condition.

Visual Inspection

Look at the lens elements for any visible scratches, cracks, or chips.

Check for signs of fungus, which appear as web-like patterns or cloudy spots.

Look for haze or fogging inside the lens, which can signify moisture or lubricant evaporation.

Examine the aperture blades to ensure they move smoothly and don’t have oil or residue on them.

Focus Test

Set your camera on a tripod and focus on a subject or a focus chart.

Take a photo and review the image for sharpness. If the image is consistently soft or out of focus, the lens might have an issue.

Decentering Test

Photograph a flat subject, like a brick wall or a grid pattern, from a straight-on angle.

Review the image. If one side or corner is noticeably softer than the rest, the lens might be decentered.

Chromatic Aberration

Photograph a high-contrast subject, like tree branches against a bright sky.

Look for color fringing (usually purple, blue, or green) around the edges of the subject. While some chromatic aberration is expected in many lenses, excessive or unusual fringing might indicate a lens issue.

Flare and Ghosting

Point the lens towards a bright light source, like the sun or a lamp, and take a photo.

Excessive flare or ghosting (bright spots or circles) can indicate lens coatings or internal reflection issues.


Photograph a uniformly lit surface, like a clear sky.

If the corners of the image are significantly darker than the center, the lens might have vignetting issues. Some vignetting is normal at wide apertures or with certain lens designs.


Photograph a grid pattern or a straight-lined subject.

If the lines appear curved (either bowing out or pinching in), the lens has distortion. Some distortion is typical for certain lens types, like wide-angle lenses.

Autofocus Issues

If the lens struggles to achieve focus, hunts back and forth without locking in, or consistently focuses slightly in front of or behind the intended subject, there might be an autofocus issue.

Zoom and Focus Rings

Check if the zoom and focus rings move smoothly. If they’re stiff, gritty, or uneven, there might be a mechanical problem.

Listen for Noises

Unusual grinding or clicking sounds when focusing or zooming can indicate mechanical or electronic issues.

Compatibility Issues

Sometimes, older lenses might not be fully compatible with newer camera bodies, leading to errors or performance issues.

How To Minimize The Degradation Of Lenses

Minimizing the degradation of camera lenses involves a combination of proper handling, storage, and maintenance. Here are some steps and best practices to ensure the longevity and performance of your lenses:

Proper Storage

Store lenses in a cool, dry place. Use silica gel packets in your camera bag or storage area to absorb moisture and prevent fungus growth.

Always use the front and rear lens caps when the lens is not in use to protect the lens elements from dust, dirt, and scratches.

Use padded lens pouches or compartments in your camera bag to protect the lens from physical shocks.

Avoid Extreme Conditions

Avoid exposing lenses to extreme temperatures. If you do, allow the lens to acclimate to room temperature before using it to prevent condensation.

High humidity can lead to fungus growth. If you’re in a humid environment, use airtight containers with desiccants for storage.

Regular Cleaning and Inspection

Use a soft lens brush or a blower to remove dust particles from the lens surface. Use a microfiber cloth and a dedicated lens cleaning solution for smudges or fingerprints.

Clean the lens mount occasionally with a soft cloth to ensure proper contact with the camera body.

Periodically inspect your lens for signs of fungus, haze, or any irregularities. Addressing issues early on can prevent more significant problems down the line.

Protective Filters

Consider using a UV or clear protective filter, especially in challenging environments. This can protect the front element from scratches, dust, and other contaminants.

Handle with Care

Avoid rough handling, and always hold the lens by its body, not by the focus or zoom rings.

When changing lenses, do so quickly and in a protected environment to minimize the entry of dust or debris into the lens or camera body.

Avoid Contaminants

Be cautious in environments with sand, salt spray, or other contaminants. These can damage the lens coatings or get inside the lens mechanism.

Use Lens Hoods

Lens hoods reduce lens flare and provide additional protection to the front element from accidental bumps, scratches, and environmental factors.

Avoid DIY Repairs

If you suspect an issue with your lens, consult with professionals or the manufacturer. 

Attempting to disassemble or repair a lens without proper knowledge can lead to further damage.

Update Firmware

Manufacturers occasionally release firmware updates for lenses with electronic components that can improve performance or fix issues. Ensure your lens firmware is up-to-date.

Limit Exposure to Sunlight

Prolonged direct exposure to sunlight can harm some lens elements or coatings. Store the lens away from direct sunlight when not in use.


Just as memories fade, lenses, too, can show signs of wear. But don’t let that dampen your photography spirit! 

While lenses are susceptible to various forms of wear and tear, from fungus and scratches to mechanical issues, the good news is that many of these problems are preventable. With proper care, storage, and a little TLC, your lenses can serve you well for years, if not decades.

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