Question from a Correspondent in the US:
'Please, what type of camera was in use when Alfred Hitchcock entered the film industry in the early '20s? In fact, any information about camera technology in the British film industry in the 1920s and '30s would be helpful.'
Thanks in advance on his behalf.
But there would have been many more suppliers of equipment in those days, from many different countries, including Britain. These days it's dominated by just a few brands, such as Panavision, Red and Arri.