Clearly, you need to protect your investment. But should you clean lenses with tissues or cloth? When they're wet or dry? Industry insiders put things into focus for us. If you're in the market ...

Cleaning expert Ann Russell has shared a useful tip to prevent glasses from fogging up after a viewer asked her how to avoid it happening when moving between hot and cold environments ...

It's important to use gentle cloths -- instead of paper towels, tissues or other dish rags ... Wetter climates may require you to regularly clean the lenses of water stains, and desert climates ...