exif: {"Image Make": "Canon", "Image Model": "Canon EOS 7D", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2010:12:01 22:03:57", "Image Artist": "Party Lin", "Image ExifOffset": "176", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "798", "Thumbnail JPEGInterchangeFormatLength": "19164", "EXIF ExposureTime": "1/60", "EXIF FNumber": "4", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "800", "EXIF SensitivityType": "Unknown", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2010:08:05 16:46:43", "EXIF DateTimeDigitized": "2010:08:05 16:46:43", "EXIF ShutterSpeedValue": "5906891/1000000", "EXIF ApertureValue": "4", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "4", "EXIF SubjectDistance": "3/5", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "50", "EXIF SubSecTimeOriginal": "00", "EXIF SubSecTimeDigitized": "00", "EXIF FocalPlaneXResolution": "2592000/907", "EXIF FocalPlaneYResolution": "345600/119", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF BodySerialNumber": "330423808", "EXIF LensSpecification": "[24, 105, 0/0, 0/0]", "EXIF LensModel": "EF24-105mm f/4L IS USM"}