func ExampleCopying() {
exif.Load("test.jpg").Write("other.jpg")
}
func ExampleReading() {
data := exif.Load("test.jpg")
fmt.Println(exif.Get("UserComment"))
}
func ExampleModification() {
data := exif.Load("test.jpg")
exif.Set("UserComment", "Nice test photo")
exif.Save()
}