(b) Rotate the speed selector
ring 2 , (fig 1-43), until the
fiducial
mark
is
opposite
the
desired shutter speed on the speed
scale.
Figure 1-43.
Speed Selector Ring.
(c) Move
the
lens
aperture
selector 3 , (fig 1-44), until its
pointer
is opposite the
desired
f/stop number on the f/stop scale.
Selector.
(d) When a filter is required, insert the filter in the filter and shade
adapter and attach the adapter over the front of the lens.
NOTE: The lens shade may be screwed into the filter and shade adapter for
attachment to the lens either with or without a filter.
41