ans = 73x1 cell array
    {'SubFileType'           }
    {'ImageWidth'            }
    {'ImageLength'           }
    {'BitsPerSample'         }
    {'Compression'           }
    {'Photometric'           }
    {'Thresholding'          }
    {'FillOrder'             }
    {'DocumentName'          }
    {'ImageDescription'      }
    {'Make'                  }
    {'Model'                 }
    {'StripOffsets'          }
    {'Orientation'           }
    {'SamplesPerPixel'       }
    {'RowsPerStrip'          }
    {'StripByteCounts'       }
    {'MinSampleValue'        }
    {'MaxSampleValue'        }
    {'XResolution'           }
    {'YResolution'           }
    {'PlanarConfiguration'   }
    {'PageName'              }
    {'XPosition'             }
    {'YPosition'             }
    {'Group3Options'         }
    {'Group4Options'         }
    {'ResolutionUnit'        }
    {'PageNumber'            }
    {'TransferFunction'      }
    {'Software'              }
    {'DateTime'              }
    {'Artist'                }
    {'HostComputer'          }
    {'WhitePoint'            }
    {'PrimaryChromaticities' }
    {'ColorMap'              }
    {'HalfToneHints'         }
    {'TileWidth'             }
    {'TileLength'            }
    {'TileOffsets'           }
    {'TileByteCounts'        }
    {'SubIFD'                }
    {'InkSet'                }
    {'InkNames'              }
    {'NumberOfInks'          }
    {'DotRange'              }
    {'TargetPrinter'         }
    {'ExtraSamples'          }
    {'SampleFormat'          }
    {'SMinSampleValue'       }
    {'SMaxSampleValue'       }
    {'YCbCrCoefficients'     }
    {'YCbCrSubSampling'      }
    {'YCbCrPositioning'      }
    {'ReferenceBlackWhite'   }
    {'XMP'                   }
    {'ImageDepth'            }
    {'Copyright'             }
    {'ModelPixelScaleTag'    }
    {'RichTIFFIPTC'          }
    {'ModelTiepointTag'      }
    {'ModelTransformationTag'}
    {'Photoshop'             }
    {'ICCProfile'            }
    {'GeoKeyDirectoryTag'    }
    {'GeoDoubleParamsTag'    }
    {'GeoASCIIParamsTag'     }
    {'SToNits'               }
    {'JPEGQuality'           }
    {'JPEGColorMode'         }
    {'ZipQuality'            }
    {'SGILogDataFmt'         }