Lens Warmers With or Without a Window
The number one enemy for night time and cold weather photographers is condensation. Not forgetting photographing in the tropics where the outside air is humid and your accommodation is air conditioned, the same problem can exist. For those of you who are new to night time photography or shooting timelapses we have a few tips to understand how to fight condensation in your equipment.
Condensation forms when a surface, such as glass or metal, is colder than the atmospheric temperature. This can vary according to pressure and humidity, below which water droplets begin to condense and dew can form. Glass and metal get cold very quickly and that is why the front of your lens is the first thing to show condensation.
Cold and humid nights have the worse affect on the camera equipment but really it can happen at anytime.
Coping with Humidity
Lenses need to be wraped in a Lens Warmer and kept warm so that the cooler room temperature will not affect the lens glass and metal (as explained above) when you venture out into the humidity of where you are.
The Effect Condensation has on your Camera Equipment Condensation not only ruins your pictures where they become blurry, it can totally ruin your lenses beyond repair and this can be a costly lesson to learn.
Fighting Condensation The best way to avoid condensation is to begin with a preventative measure - use a Lens Warmer.
Before going out on a shoot inspect your lens to ensure that condensation has not begun to form already. If it has wipe it away and use a hair dryer to dry the condensation away.
Wrap the camera and lens in a towel and place them in a bag (not plastic). This will protect them from the night, cold air. You are now ready to go out and set up your camera for that night shoot, long exposure or time lapse session.
After mounting the camera onto the tripod set the zoom and focus on the camera. Activate the hand warmers and insert into the inside pockets. Wrap the Lens Warmer around the lens and secure with the velcro. The hand warmers should be active for 8 to 10 hours.
Two Types of Lens Warmers
- Lens Warmer - a wrap around the lens fixed with velcro
- Lens Warmer With Window - the same as above except a window has been put in to enable the photographer to adjust the lens setting without having to take the Lens Warmer off.
In both cases, in order for me to make the correct size and position the window correctly, I need the make and model of the lens.
What are Lens Warmers Made Of?
Thermal fabric with a soft fleece lining. The thermal fabric can be sprayed with a water repelent to further protect from dampness seeping through. Each Camera Lens Warmer has, (depending on the size), from 1 to 3 pockets into which a hand warmer is placed to keep the temperature of the lens warm. Hand warmers are included for each pocket on initial purchase
The final word on Lens' Condensation
You spend a lot of money to get just the right lens to use with your expensive camera. Don't think that condensation build-up can't happen to your camera lens - IT CAN!
If the lens can be fixed it will be very costly. Compare that to purchasing a Lens Warmer for your lens. There is good word that Lens Warmers are by far the most cost effective solution and prevention device you can own.
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