Gracia EM 31

marketed in 1970-71

silent super 8 cartridge

lens: f: 1.8 \ F: ? mm

zooming ratio: 3x

focusing: manual, 1.5 to infinity

rangefinder: microprism

zooming: auto and manual

filter size: ?

viewfinder: single-lens reflex with adjustable eyepiece

viewfinder information: exposure meter

exposure: auto exposure control; TTL Electric Eye, CdS cell

film speed: auto for 25/40, 40/64, 64/100 and 100/160 ASA (daylight/tunsten)

ASA notching: no pin = 3 steps

CCA filter: built-in 85A filter, coupled with movie light socket

backlight control button: yes

filming speed: 18 fps, single frame

shutter opening angle: <180 degrees

sound: no

remote control socket: yes

cable release socket: no

movie light socket: screw type

film counter: 1-15 m, automatic resetting by unloading of a cartridge

handle: fixed, chamber for penlight batteries

film drive motor: DC micromotor

battery check button: yes

power source: 4 x AA batteries \ 1 x PX13 button cell for light meter

batteries recharge socket: 6 V DC

weight: circa 1000 g

dimensions: 190 mm high

tripod socket: 1/4"

made in Japan by Toho Giken