This is a discussion thread for the following file:
Zeiss RMK TOP Camera Identification
This is the corner of one of the fotos used to mosaic the orthophoto. The corner shows the camera make, model and serialnumber (I wonder who it belongs to - and why it has not been removed). As written it is a Zeiss RMK Top large format Arial surveying camera.
I would think theese photos were taken from about 1000m altitude.