old_contents: CAMERAS = {
      'fisheye2': {
          'Make': 'Lomography',
          'Model': '"Fisheye 2"',
          'FocalLength':  '10mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'
      },
      'lasardina': {
          'Make': 'Lomography',
          'Model': '"La Sardina"',
          'FocalLength':  '22mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'
      },
      'holga120n': {
          'Make': 'Holga',
          'Model': '"120N"',
          'FocalLength':  '60mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'  
      },
      'holga120fn': {
          'Make': 'Holga',
          'Model': '"120FN"',
          'FocalLength':  '60mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'  
      }
  }
  
new_contents: CAMERAS = {
      'fisheye1': {
          'Make': 'Lomography',
          'Model': 'Fisheye One',
          'FocalLength':  '10mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'
      },
      'fisheye2': {
          'Make': 'Lomography',
          'Model': '"Fisheye No. 2"',
          'FocalLength':  '10mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'
      },
      'holga120n': {
          'Make': 'Holga',
          'Model': '"120N"',
          'FocalLength':  '60mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'  
      },
      'holga120fn': {
          'Make': 'Holga',
          'Model': '"120FN"',
          'FocalLength':  '60mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'  
      },
      'lasardina': {
          'Make': 'Lomography',
          'Model': '"La Sardina"',
          'FocalLength':  '22mm',
          'ExposureTime': '1/100',
          'ApertureValue': '8'
      }
  }
  
subject: add fisheye one