Someone has found something useful to do with the iPhone 4. If you're willing to spend an extra $10, take a leaf out of this iPhone owner's book you can turn your iPhone 4 into a digital microscope.
The video on YouTube shows how the owner used an inexpensive microscope found on Amazon, which according to TUAW cost $7, an iPhone case and some superglue to create the portable digital microscope that also takes pictures.
Describing how he made it in the video below, the owner said he bought the microscope, called the SE45X. He then shows how to stick the microscope onto the camera lens by coating the rim in superglue. After it had dried he screwed the rest of the microscope onto the stuck down piece.
He showed how easy it was to zoom in and out at items and also take pictures, which could then be emailed or sent via MMS to friends. The microscope came with two options, digital zoom and visual zoom. The owner advised using the latter as this "got rid of the circular vision".
Check out the video below to see how it works: