# TIFF byte order and magic
"\x49\x49\x2A\x00"
"\x4D\x4D\x00\x2A"

# Common IFD tags as 2-byte LE pairs
# 256 = ImageWidth
"\x00\x01"
# 257 = ImageLength
"\x01\x01"
# 258 = BitsPerSample
"\x02\x01"
# 259 = Compression
"\x03\x01"
# 262 = PhotometricInterpretation
"\x06\x01"
# 273 = StripOffsets
"\x11\x01"
# 277 = SamplesPerPixel
"\x15\x01"
# 278 = RowsPerStrip
"\x16\x01"
# 279 = StripByteCounts
"\x17\x01"
# 282 = XResolution
"\x1A\x01"
# 283 = YResolution
"\x1B\x01"

# Common IFD tags as 2-byte BE pairs
"\x01\x00"
"\x01\x01"
"\x01\x02"
"\x01\x03"
"\x01\x06"
"\x01\x11"
"\x01\x15"
"\x01\x16"
"\x01\x17"