╤                Dual Inon Z-240 Strobe Test                  
 with Sea & Sea TTL Controller
 (click here for version with larger 480-pixel wide images)

Camera:  Nikon D200 with Nikkor 12-24mm f/4 DX AF-S Zoom

Housing:  Sea & Sea DX200, Ext. Ring 40, Athena OPD-170 dome

Strobes:  Dual Inon Z240s connected to Sea & Sea TTL Controller

Strobe Spread:  2 ft. head center to dome center

Subject Distance:  4 ft.

ISO:  100                   Exposure Metering:  Matrix

Z240 & TTL Controller Settings:

  • TTL:   Main Mode to S-TTL,  Advanced Cancel Circuit switch down and locked (TTL Auto), EV Controller to TTL, S&S TTL Controller set from -1 to +1 as desired.
     

  • Manual :  Main Mode to M (-.5 to -6), ACC switch down and locked, EV Controller as needed for -.5 to -6 EV, or switch Main Mode to FULL, S&S TTL Controller to Manual

Normal TTL Control with S&S TTL Controller at 0 EV, Aperture Priority Mode, 1/60 sync  
f4 f5.6 f8  
 
f11 f16 f22  
 
 
TTL repeated on Manual Mode, 1/250 synch - As expected, same light balance as at 1/60 sync  
f4 f5.6 f8  
 
f11 f16 f22  
 
TTL repeated on Manual Mode, 1/125 synch, f/11 - TTL Controller varied from -1 to +1 EV
-1 -0.7 -0.3 0
+0.3 +0.7 +1.0  
 
Manual Flash Mode, 1/250 synch, f/11 - Z240 EV Controller from -6.0 to 0 in 0.5 EV steps
-6.0 -5.5 -5.0 -4.5
-4.0 -3.5 -3.0 -2.5
-2.0 -1.5 -1.0 -0.5
0.0      
Z240 Full Power obtained upon setting Main Mode to FULL, EV Controller then ignored.  ACC locked down