let imageSource = CGImageSourceCreateWithURL(url as CFURL, nil)
let imageProperties = CGImageSourceCopyPropertiesAtIndex(imageSource!, 0, nil)! as NSDictionary

let exifDict = imageProperties.value(forKey: "{Exif}") as! NSDictionary
let dateTimeOriginal = exifDict.value(forKey: "DateTimeOriginal") as! NSString
print ("DateTimeOriginal: (dateTimeOriginal)")

let PixelXDimension = exifDict.value(forKey: "PixelXDimension") as! Double
print ("PixelXDimension: (PixelXDimension)")

let exifDictTIFF = imageProperties.value(forKey: "{TIFF}") as! NSDictionary
// optional
if let Software = exifDictTIFF.value(forKey: "Software") as? NSString {
    print ("Software: (Software)")
}