PetaPixel has two articles about hacks on top of the Fujifilm Instax instant camera.
An Instax Camera with the Leica M lens: a prototype using the SQ10 as a base, where the M lens mount replaces the lens, to produce square images. The hybrid model of small sensor and Instax printer make this work, as the coverage of an M lens is insufficient for even Instax Mini. Still the image quality is seriously limited by the quality of the sensor and the “printer”.
Combining a Hasselblad 500 and an Instax Mini 9: the Instax mini act as a film back for the Hasselblad.
We were really happy with our first tests. The full frame of the film is exposed and the images are sharper than weâ€™ve ever seen on this type of film. There are still a few ongoing issues with light leaks and with focusing because of the slight difference in focal plane length.
Interesting to see the creativity in that area.