Relative sensor sizes – Nikon full-frame vs. Hasselblad X1D medium-format vs. Micro Four Thirds. Dividing the Nikon sensor diagonal by the MFT diagonal gives a crop factor of 1.99 (43.13 divided by 21.6mm). The medium-format Hasselblad diagonal gives a less usual crop-factor of 0.79 (43.13 divided by 54.78mm).