User manual
16 
Flash 
pictures 
with 
the 
RETI 
NA 
automatic 
III 
Slide 
your 
flash 
gun, 
the 
KODAB
LlTZ, 
for 
instance, 
into 
the 
accessory 
shoe 
of 
your 
camero, 
plug 
the 
flash 
coble 
into 
the 
flash 
socket  (s), 
and 
set  the 
required 
distance. 
For 
flash 
shots 
with 
flashbulbs 
turn 
the 
shutter 
speed 
ring 
(0) 
to 
'
ho 
second.  In 
conjunction 
with 
electronic 
flash 
any 
shutter 
speed 
from 
'ho up 
to 
' /
500 
sec. 
may 
be 
used. 
Your 
RETINA 
automatic 
III 
always 
operates 
in 
the 
X 
sy
nchronizer 
position. 
The  lens 
opening 
is 
dependent 
en 
the 
guide 
number 
of 
the 
flash 
bulb 
or 
electron
ic 
flash 
unit 
used 
and 
also 
upon 
the 
distance. 
The 
guide 
number 
is 
specified 
on 
the 
packages 
of 
the 
flash 
bulbs 
and 
in 
the 
operating 
instructions 
of 
electronic 
flash 
units. 
Th
e 
follo-
wing 
rule 
applies: 
guide number  divided  by  distance  =  lens  opening. 
If, 
for 
instance, 
your 
guide 
number 
is 
96 
and 
your 
distance 
12 
ft., 
96 
divided 
by 
12 
is 
8. 
This  means 
that 
you 
have 
to 
turn 
the  lens 
opening 
ring 
(c) 
until 
the 
figure 
8  on  the 
lens 
opening 
ring 
is 
opposite 
the 
setting 
mark
.  The 
automatic 
control 
is 
now 
disengaged 
and 
you 
are 
ready 
to 
shoot. 










