!
Based on the camera model, strobes quantity (1 strobe / 2 strobes in a pair, or more), battery condition etc., photographer
should set any small initial (+/-) Flash Exposure Compensation, for balanced flash lighting. Please makea land test of TTL
work before submerging.
!
During the shooting underwater, photographer can use (+/-) Flash Exposure Compensation in wide range (-3ev
…
.+3ev),
based on shooting conditions, subjects and tasks, if images are too bright or too dark.
In normal operation, TTL +/- Flash exposure compensation adjustment is available for underwater photographer through 2
methods:
-
Using “+/-Ev” dial switch on the underwater strobe body (adjustment works for fiber-optical type connection only).
-
Using camera “Flash Exposure Compensation” function. Such adjustment type is recommended as more accurate, and
it works for both types of connection (optical / electric). Available “Flash Exposure Compensation” range for Sony
cameras: -3ev
…
0...+3ev. User can adjust it in steps 0.3ev or 0.5ev (set the step by camera menu), viewing the value
on the camera menu scale.
!
Set Mechanical Shutter type in camera menu. This is important for normal TTL work. Don’t use fully electronic shutter
(option available in some cameras menu). Only e-front curtan can be On if necessary, but not a fullly electronic shutter.
!
Shooting macro, for normal TTL accuracy the nearest distance from underwater strobe to a target must be more than
0.35m underwater (or more than 0.7m for the land tests),
to keep the system inside of working TTL range.
But the
camera can be positioned as close to the target as user requires so long as the strobe minimum distance is adjusted
!
TTL-Converter is tuned for normal TTL accuracy under water. Land tests may give different results.
!
In some shooting conditions or camera settings, TTL system may be not effective or
out of working range.
This case
photographer should use
Manual mode
.
Shooting in Manual mode
!
Underwater photographer can use 3 different methods for shooting in Manual mode:
-
Camera menu Manual mode
-
Underwater strobe Manual mode
-
TTL-Converter hardwire Manual mode
o
Camera menu controlled Manual Mode
(set by camera menu assigned command – “WL”)
Switch TTL-converter to Manual mode by camera menu (“WL” setting in menu).
Set underwater strobe to “S-TTL” mode on the dial switch on the strobe body, - to control light intensity
manually via camera scale.
Sony camera menu does not have any original command for switching to M mode. That is why the “
WL
” command
(On/Off) is assigned for this aim via TTL-Converter firmware. “
WL
” command ON switches TTL-Converter to M mode
without Pre-flashes. This is preferable Manual mode for universal usage, easy switchable and controllable during the
diving.
