Radio Shack Frequency Counter : S mv counter history
{"Image Make": "Canon", "Image Model": "Canon PowerShot S20", "Image Orientation": "Horizontal (normal)", "Image XResolution": "180", "Image YResolution": "180", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2007:05:08 12:25:49", "Image YCbCrPositioning": "Centered", "Image ExifOffset": "184", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "180", "Thumbnail YResolution": "180", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1524", "Thumbnail JPEGInterchangeFormatLength": "3895", "EXIF ExposureTime": "1/30", "EXIF FNumber": "8", "EXIF ExifVersion": "0210", "EXIF DateTimeOriginal": "2007:05:08 12:25:49", "EXIF DateTimeDigitized": "2007:05:08 12:25:49", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "2", "EXIF ShutterSpeedValue": "160789/32768", "EXIF ApertureValue": "6", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "29/10", "EXIF SubjectDistance": "43/200", "EXIF MeteringMode": "CenterWeightedAverage", "EXIF Flash": "Flash fired", "EXIF FocalLength": "13/2", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "465", "EXIF ExifImageLength": "800", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "Interoperability RelatedImageWidth": "2048", "Interoperability RelatedImageLength": "1536", "EXIF InteroperabilityOffset": "1072", "EXIF FocalPlaneXResolution": "1024000/139", "EXIF FocalPlaneYResolution": "1536000/209", "EXIF FocalPlaneResolutionUnit": "2", "EXIF SensingMethod": "One-chip color area", "EXIF FileSource": "Digital Camera"}