ExifTagRecord(
  image_description: Option(String),
  make: Option(String),
  model: Option(String),
  orientation: Option(Orientation),
  x_resolution: Option(Int),
  y_resolution: Option(Int),
  resolution_unit: Option(ResolutionUnit),
  software: Option(String),
  modify_date: Option(String),
  host_computer: Option(String),
  y_cb_cr_positioning: Option(YCbCrPositioning),
  exposure_time: Option(Fraction),
  f_number: Option(Fraction),
  exposure_program: Option(ExposureProgram),
  iso: Option(Int),
  exif_version: Option(String),
  date_time_original: Option(String),
  create_date: Option(String),
  offset_time: Option(String),
  offset_time_original: Option(String),
  offset_time_digitized: Option(String),
  components_configuration: Option(List(ComponentsConfiguration)),
  shutter_speed_value: Option(Fraction),
  aperature_value: Option(Fraction),
  brightness_value: Option(Float),
  exposure_compensation: Option(Fraction),
  metering_mode: Option(MeteringMode),
  flash: Option(Flash),
  focal_length: Option(Float),
  subject_area: Option(List(Int)),
  maker_data: Option(TBD),
  sub_sec_time_original: Option(String),
  sub_sec_time_digitized: Option(String),
  flash_pix_version: Option(String),
  color_space: Option(ColorSpace),
  exif_image_width: Option(Int),
  exif_image_height: Option(Int),
  sensing_method: Option(SensingMethod),
  scene_type: Option(SceneType),
  exposure_mode: Option(ExposureMode),
  white_balance: Option(WhiteBalance),
  focal_length_in_35_mm_format: Option(Int),
  scene_capture_type: Option(SceneCaptureType),
  lens_info: Option(List(Fraction)),
  lens_make: Option(String),
  lens_model: Option(String),
  composite_image: Option(CompositeImage),
  gps_latitude_ref: Option(String),
  gps_latitude: Option(GPSCoordinates),
  gps_longitude_ref: Option(String),
  gps_longitude: Option(GPSCoordinates),
  gps_altitude_ref: Option(GPSAltitudeRef),
  gps_altitude: Option(Float),
  gps_timestamp: Option(String),
  gps_speed_ref: Option(GPSSpeedRef),
  gps_speed: Option(Float),
)

TBD