caption: 机械工程“林枫计划”第七期学员赴井冈山读书实践
exif: {"Image ImageWidth": "3920", "Image ImageLength": "2800", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Make": "Canon", "Image Model": "Canon EOS-1D X", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CC (Windows)", "Image DateTime": "2017:06:29 15:31:59", "Image Artist": "Riviera", "Image Copyright": "Firework", "Image ExifOffset": "316", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "994", "Thumbnail JPEGInterchangeFormatLength": "5828", "EXIF ExposureTime": "1/100", "EXIF FNumber": "8", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "400", "EXIF SensitivityType": "Recommended Exposure Index", "EXIF RecommendedExposureIndex": "400", "EXIF ExifVersion": "", "EXIF DateTimeOriginal": "2017:06:29 10:04:38", "EXIF DateTimeDigitized": "2017:06:29 10:04:38", "EXIF ShutterSpeedValue": "415241/62500", "EXIF ApertureValue": "6", "EXIF ExposureBiasValue": "-1", "EXIF MaxApertureValue": "4", "EXIF MeteringMode": "Partial", "EXIF Flash": "Flash fired, compulsory flash mode", "EXIF FocalLength": "32", "EXIF SubSecTimeOriginal": "30", "EXIF SubSecTimeDigitized": "30", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "650", "EXIF ExifImageLength": "400", "EXIF FocalPlaneXResolution": "1440", "EXIF FocalPlaneYResolution": "1440", "EXIF FocalPlaneResolutionUnit": "3", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF BodySerialNumber": "214014001516", "EXIF LensSpecification": "[24, 105, 0/0, 0/0]", "EXIF LensModel": "EF24-105mm f/4L IS USM", "EXIF LensSerialNumber": "0000b22c33"}