The Lumin app for the iPhone allows the use of the phone’s camera as a magnifier, with or without illumination from the built-in LED. That’s incredibly clever, and I have found it ideal for determining serial numbers on hardware for insurance purposes. Such numbers are increasingly screen printed in very small fonts on equipment and the their falling size and my aging eyesight conspire doubly against me.
You can take a snap of the area imaged and email it to yourself with ease – here’s an example of the serial number on my Panny G3:
Other uses include looking at restaurant menus in poorly lit diners, spotting that wood splinter in your finger, examining your Border Terrier’s nose to try and determine just how it manages to stay frigid, and …. well, you get the idea.
There are many flashlight apps in the iPhone AppStore, but none that can compare to this. Try and buy an illuminated magnifier for $1.99 that fits in your vest pocket and doubles as a flashlight.