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How do you avoid lens fogging and condensation in humid weather?

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How do you avoid lens fogging and condensation in humid weather? If you are a landscape photographer, you know how frustrating it can be when your lens gets foggy or wet due to high humidity, mist, or rain. Not only does it affect your image quality, but it can also damage your equipment. In this article, you will learn some practical tips to prevent and deal with lens fogging and condensation in humid weather.

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1 Understand the causes

Lens fogging and condensation occur when there is a significant difference between the temperature and humidity of your lens and the surrounding air. For example, if you bring your cold camera and lens from an air-conditioned room to a hot and humid outdoor environment, the warm and moist air will condense on the cooler surface of your lens, creating fog or droplets. The same can happen if you move from a warm and dry indoor setting to a cold and damp outdoor one, or vice versa.

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Michael Leenheer

Owner, New Light Photography & SUB Photo
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Think of when eyeglasses fog up: it’s worst when very cold glasses are brought indoors. Same with a cold drink: the outside of the cold glass is dripping where it meets the warm air. It’s rare for the reverse to happen; a warm camera is not likely to fog up when moving to a cold environment.

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2 Acclimate your gear

The best way to avoid lens fogging and condensation is to minimize the temperature and humidity difference between your gear and the environment. This means you should acclimate your camera and lens to the outdoor conditions before you start shooting. You can do this by leaving your gear in a sealed plastic bag or a waterproof case for at least 15 minutes, or until the temperature inside the bag or case matches the outside. This will prevent the air from contacting your lens and forming fog or condensation.

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Michael Leenheer

Owner, New Light Photography & SUB Photo
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Note that a temperature difference of 10-15 degrees will have little effect, but be mindful of larger differences. The main concern in my experience has been bringing a freezing cold camera in to a warm room.

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3 Protect your lens

Another tip to prevent lens fogging and condensation is to protect your lens from direct exposure to moisture. You can use a lens hood, a filter, or a rain cover to shield your lens from rain, mist, or spray. You can also use a microfiber cloth or a lens wipe to gently dab off any moisture that may accumulate on your lens. However, avoid rubbing or wiping your lens too hard, as this can scratch or smear your lens and create more problems.

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4 Dry your gear

If your lens does get foggy or wet, you should dry it as soon as possible. You can use a hairdryer, a fan, or a dehumidifier to blow warm and dry air over your lens and camera body. You can also use silica gel packets or rice to absorb the moisture from your gear. However, do not use heat sources that are too hot, as this can damage your electronics or melt your plastic parts. You should also avoid opening your camera or lens until they are completely dry, as this can introduce more moisture or dust into your system.

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5 Store your gear properly

Finally, you should store your gear properly when you are not using it or when you are traveling. You should keep your camera and lens in a dry and cool place, away from direct sunlight, heat sources, or moisture. You should also use airtight containers or bags with silica gel packets or rice to prevent moisture from entering your gear. You should also avoid leaving your gear in your car, as the temperature and humidity can fluctuate dramatically and cause fogging or condensation.

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Stephen Taglieri

Speaker | Thought-Leader | Storyteller - Creating Conservation and Climate Impact Through Successful Communication, Visualization, and Marketing
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Especially if you're working in a humid climate and living in a climate-controlled building, find a way to safely store your gear outside. If you're able to bring a Pelican case or some sort of safe way to keep your gear outside overnight or when you're not shooting, this will cut down on acclimation time when you decide you want to get out and shoot with your camera.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How do you avoid lens fogging and condensation in humid weather?

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2

3

4

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1 Understand the causes

2 Acclimate your gear

3 Protect your lens

4 Dry your gear

5 Store your gear properly

6 Here’s what else to consider

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