Optical devices for traditional film cameras were largely
sourced from the major camera makers (i.e., Kodak, Canon
and Nikon), and some optical specialization firms, such as
Carl-Zeiss. The technological trajectory was driven by optics
and their associated control mechanisms, and matched the
specialized-supplier pattern [50]. Together these industries
constituted the photographic industrial sector, but patterns
of innovation varied with relative positions held by various
industries within the sector. The developed paradigmatic
typology of technological change is applied to guide the study
of the digitalization in the photographic industrial sector. The
typology with representative cases is depicted in Fig. 2.