mirror frame adding shims
{"Image Make": "NIKON CORPORATION", "Image Model": "NIKON D3100", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "QuickTime 7.6.6", "Image DateTime": "2013:06:12 19:54:52", "Image HostComputer": "Mac OS X 10.6.8", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "256", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "628", "Thumbnail JPEGInterchangeFormatLength": "4314", "Thumbnail YCbCrPositioning": "Centered", "EXIF ExposureTime": "1/30", "EXIF FNumber": "5", "EXIF ExposureProgram": "Unidentified", "EXIF ISOSpeedRatings": "400", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2013:06:09 03:41:17", "EXIF DateTimeDigitized": "2013:06:09 03:41:17", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "23/5", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "34", "EXIF ColorSpace": "sRGB", "EXIF SensingMethod": "One-chip color area"}