Silma 4 S

marketed in 1974

silent super 8 cartridge

lens: f: 1.8 \ F: 9-36 mm

zooming ratio: 4x

focusing: manual

zooming: auto and manual

filter size: ?

viewfinder: single-lens reflex with adjustable eyepiece

viewfinder information: ?

exposure: auto and manual exposure control; TTL Electric  Eye, CdS photocell

film speed: automatic for 25/40  and 100/160 ASA only (daylight/tungsten)

CCA filter: built-in 85A, with filter control switch

filming speed: 18, 36 fps, single frame

shutter opening angle: <180 degrees

sound: no

cable release socket: yes

remote control socket: ?

movie light socket: ?

film counter: yes

handle: fixed

power source: 4 x AA batteries

weight: ?

dimensions: ?

tripod socket: 1/4"

made in Malaysia by Robert Bosch