I've been using a D7000 in a Nauticam housing connected to a pair of Inon Z240 (Type 4) over fiber optic cables and using TTL exposure fine for some time. I'm relatively pleased with the results.
This has been mostly on day trips where I might do a couple of dives in a day. Am going on vacation where I hope to make about 4 or 5 dives a day. I'd like to maximize my camera's internal battery life, so I don't have to crack open the housing between dives. So, am thinking about moving from TTL to manual exposure.
The D7000 flash exposure can be set for TTL or Manual mode (Full thru 1/128 sec). I know how to set the Inon in sTTL mode (Main Mode Dial on sTTL, EV Control Dial on 'B', ACC button UP/On).
But when it comes to manual mode, I have the following questions:
- With the D7000, can I set the internal flash to 1/128 sec to trigger the Z240?
- Would the Z240 settings then be this?: Main Mode Dial on M (or Full), EV Control Dial on whatever value, and the ACC button UP/On
I'm assuming the D7000 requires the ACC button to be UP/On, regardless of my camera flash setting and the same for both sTTL and Manual modes on the Z240.
Is the above correct? Thanks in advance.