Resolution chart: (a) ISO-12233 resolution chart, and (b) modified chart for experiment.
{"Image Orientation": "Horizontal (normal)", "Image XResolution": "150", "Image YResolution": "150", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS4 Windows", "Image DateTime": "2016:02:16 16:20:28", "Image ExifOffset": "164", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "302", "Thumbnail JPEGInterchangeFormatLength": "4658", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "488", "EXIF ExifImageLength": "158"}