Ever more frequently digital backs use ever-smaller pixels (at present more than 60 MP at 6 µm size).

This has consequences: for example, compared to the medium- and large-format films, the digital sensor formats are much smaller and require far shorter focal lengths if the same angle of view is to be achieved. Short focal lengths on the one hand feature large depth of field at a certain aperture, but on the other hand they require tight mechanical tolerances. Creative aspects also require consideration that shorter focal lengths change the perspective – even if the angle of view is retained between digital and analog. Returning to aspects of construction: all camera elements need not only to be engineered with high precision, they also need to be sufficiently robust so that their precision will not be lost in the rough-and-tumble of every-day use. These considerations become still more important when a camera is to be frequently used in changing environments, in studios and outdoor, between equator and poles, desert and jungle, on the ground and in the air. There is no room here for designer- fancies.