Chapter Iii : Lenses - BOLEX H8 Instructions For Use Manual

Interchangeability of lenses:
The Bolex model H camera is made to take interchangeable
lenses, the mounts of which are provided with an international
standard thread.
(25.4 mm, setting 17.52 mm), while model H 8 takes the small
standard 5/8-inch (15.8 mm, setting 12.29 mm). Thus it is always
possible to complete the optical equipment by the purchase
of new lenses of varying focus and power and of any make.
Each lens supplied with the camera must be accompanied
by a certificate from Paillard S. A., bearing the numbers
of the lens and of the apparatus and guaranteeing accurate
focussing. When lenses are purchased after the camera has
been bought, it is recommended that such lenses be sent with
the camera to the Paillard Works or to their accredited repre-
sentatives, and a new certificate in respect of the proper fitting
of such lenses should be insisted upon.
The lenses must be screwed securely into the lens openings,
but must not be forced.
CHAPTER III
Lenses
Model H 16 takes standard 1 inch thread
11