Originally Posted By: hikermor
You can certainly start a fire with a magnifying glass, but how often do you really need a fire when the sun is high in the sky? When you really, really need to start a fire, it will be dark, cold, and damp. A Bic weighs less and works in more situations, as do many other fire starters.


My theory is that a fresnel lens weighs nothing, might be another way I could use to start a fire, and definitely helps my tired old eyes read the fine print on any survival tips I have with me (such as are packaged in the PSP, PSP+, and other kits).