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apologies about the output, I

apologies about the output, I sent a sample DNG file through the contact link.

I am still getting errors when trying to open the .tiff files

TIFFFieldWithTag: Internal error, unknown tag 0xa406.
TIFFFieldWithTag: Internal error, unknown tag 0xa407.
TIFFFieldWithTag: Internal error, unknown tag 0xa408.
TIFFFieldWithTag: Internal error, unknown tag 0xa409.
TIFFFieldWithTag: Internal error, unknown tag 0xa40a.
TIFFFieldWithTag: Internal error, unknown tag 0xa40b.

I am using colmap; which uses freeimage to import supported files. DNG files are unsupported but TIFF's are.

I think those unknown() values trips up freeimage.