How to stop lens fog for astro photography

If you’ve ever gone out to shoot some astro timelapses or photos chances are you’ve had a frustrating experience with your lens fogging up.

This is caused by water molecules in the air. As the air cools down at night, these water molecules have to go somewhere. Depending on the temperature of your gear, they’ll gladly settle on your lens! No one likes a foggy lens, so let’s fix that!

In this video I show you what you can do to stop your lens from fogging up.

You can use the calculator on this website to find out the dew point for your area. http://www.dpcalc.org/

Depending on this dew point you might not need a lens warmer, but it’s a good idea to have one in your camera bag anyway.

One option to stop your lens from fogging up…


This is only a snippet of a Time Lapse Photography Article written by Matthew Vandeputte

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