Trevor Mogg

The last thing you want as a photographer is to see dust, grit, or any other contaminants on your camera lens that could ruin your images or worse, damage the glass. That's why it's important to handle your lenses carefully, inspect them regularly, and clean them when necessary. For digital cameras with removable lenses , this means taking care of not only the front glass, but the rear glass, too.

If you have more than one lens, there's a good chance you'll sometimes be changing it over, say from a telephoto to an ultra-wide lens . Every time you change the lens, the rear glass is exposed to the elements, with dust or anything else at risk of attaching itself to the rear, as well as the front, of the lens. A good way to reduce the chance of contaminants reaching the rear glass is to become familiar with the process of changing the lens so that you can do it in as quickly as possible.…