· SETTING THE LENS APERTURE  
The desired aperture opening of lens is 
set by rotating the aperture scale ring 
on the lens barrel to the red diamond 
mark on the "depth of field" ring. The 
diaphragm automatically reopens to 
full aperture after each shutter release. 
Consequently, the field of view visible 
before and after the shutter is released. 
 
· FOCUSING 
With your "Singlex", which is a single lens reflex camera, focusing and composing is achieved 
through the lens, completely eliminating the problem of parallax. The penta-prism system 
incorporates a bright fresnel lens for clear viewing even to the corners for perfect composition To 
focus, frame the subject to be photographed in the viewfinder and rotate the focusing ring either to 
the left or right until the split images merge into one clear image.