It's been fun writing the code for this site. I've been laid up with a bad cold for a few days, and this has been the perfect opportunity to do some deep feeding on computer code. I already had a reasonable understanding of HTML, PHP and MySql. (For the already bored, these are a couple of hand in hand computer languages that allow websites to be built and made "reactive" through the questioning of a database.) The really interesting thing has been working on the interface between digital images and computer programs. Most digital images contain lots of bits that work together to make up a picture. I already knew that. I also knew that every digital image was attached to a data file called EXIF date. (EXIF means Exchangeable Image File Format by the way). Getting boring here, so get back to the interesting bit. I discovered that this EXIF data is attached to each image. It records such things as the camera equipment used and the settings of that equipment, and as ...