Cactus RF60 - 11.3 Optical Trigger

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• F-number:T h eh i g h er th e f-n u m b er, 
t h e lo n g er t he del a y ti m ew it h i n 
the range of the particular
camerasystem.
• D a r kB a n d P o sitio n: When you see a
d a rk ba n d at t h et o p of t h ei m a g e, 
i nc r e a s e t h ed el a y ti m e.W h e n t h e 
d a rk ba n d a p p e a r sat t h eb ott o m, 
d e cr e a s e t h ed el a y ti m e.
Optical Trigger
The optical trigger can act as an
a lt er n at e tr i g g er m e ch a n is mf r o m 
theradiosignal.Forinstance,it
is v er y u sef u l i n c a pt u r i n g p r e -  a s h 
si g n a ls t h at a r e b ei n g e m itt e d 
e a rlie r t h a nt h e  a s hs y n c. S etti n g 
t h e p r e - a s h o ptic a ltr i g g er w it h t h e 
d el a y ti m e r (se eS e ctio n 11.4) c a n b e 
u s e d to set th ee x a ct ti m e fo r t h e 
 a s h t o st a r t  r i n g.
T w oo ptic a l tr i g g er m o d e s,S1 a n dS 2, 
a r e av a i l a ble fo r s ele ctio n:
S1(FI R S T):T r i g g e r i n g o n t h e r st 
pr e - a s h, oro n t h em a i n  a s h if 
t h e r e i s n op r e -  a s h.
S2(M A IN): I g n or i n g pr e - a s h es a n d 
tr i g g e r i n g o n t h em a i n  a s h.
Camera brand Suggested delay time
Canon 52ms-64ms
Nikon 55ms-65ms
Sony 90ms-100ms
Olympus/Panasonic 65ms-75ms
Pentax 75ms-82ms
11.3