I tried to convert cr2 100/1600 to DNG with Barracuda GUI or simple dropping cr2 to cr2hdr.exe. I have got dng, but there is a very small difference from cr2 taken without dual iso
cr2 taken without dual iso (crop)
dual-iso-dng (crop)
dual-iso-cr2 (crop)
summe poetry
cr2 taken without dual iso (crop)
dual-iso-dng (crop)
dual-iso-cr2 (crop)
summe poetry