caption: an angle of an inverted milling machine wheel
exif: {"Image ImageWidth": "1500", "Image ImageLength": "1125", "Image BitsPerSample": "[8, 8, 8]", "Image Compression": "Uncompressed", "Image PhotometricInterpretation": "2", "Image Make": "Canon", "Image Model": "Canon EOS 30D", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image PlanarConfiguration": "1", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS3 Windows", "Image DateTime": "2014:10:21 12:05:31", "Image Artist": "unknown", "Image ExifOffset": "316", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "818", "Thumbnail JPEGInterchangeFormatLength": "4326", "EXIF ExposureTime": "1/200", "EXIF FNumber": "22", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "100", "EXIF ExifVersion": "", "EXIF DateTimeOriginal": "2009:05:13 14:39:48", "EXIF DateTimeDigitized": "2009:05:13 14:39:48", "EXIF ShutterSpeedValue": "477741/62500", "EXIF ApertureValue": "8918863/1000000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "95/32", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "68", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "1500", "EXIF ExifImageLength": "1125", "EXIF FocalPlaneXResolution": "233600/59", "EXIF FocalPlaneYResolution": "233600/59", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}