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Subal housing with dual z240 strobes

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Postby Fredrik » Wed Jul 28, 2010 12:42 pm

Yes, Tonto packing my camera for Bali where hopfully it will get to see some action.

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Postby scottg » Wed Jul 28, 2010 4:59 pm

Fredrik - good luck in finding a TTL converter that works - you will need to make sure the converter you get is compatible with the nikon D100.

Sea & Sea has several different TTL converter models and you may have to test a couple yourself.

If it works, TTL will be fairly convenient for macro.

The DTTL will not work with the D100 / Z240 combo.

It also looks like Jean has given you lots of good advice.

good luck!

Scott Gietler Owner/Editor, Underwater Photography Guide & Bluewater Photo

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Postby bvanant » Thu Jul 29, 2010 1:08 pm

I have never used a TTL converter before and have only read Scotts article on it so I'm not sure I fully understand why I need it. If I understand it correctly DTTL will only work with Nikon strobes and it won't work with more then one, right? In order to be able to use TTL with other strobe brands I will need a TTL converter so that the strobe and camera can communicate. The D100 is rather old, will it be able to understand the output from Sea&Sea TTL converter (#50117)?[/quote]

In your old system you had a Nikon strobe in a housing that talked directly to the Nikon camera. That's why TTL worked. Unfortunately, Nikon (and Canon) will not tell other strobe companies exactly how DTTL works so guys like Matthias at Heinrichs-Weikamp essentially reverse engineered the protocol and built a small circuit board that translates the Nikon signals into signals that the strobes can understand. I believe that the Sea and Sea converters essentially use H-W converter circuits but packaged in an external device. H-W converters are labeled as compatible. I use an H-W converter to trigger Z240 strobes so all should be good if you go that route. It is not clear from Sea and Sea if their TTL converter N will work with the D100. They suggest that it will for the D200 and later but I can't find anyone who knows, so if you buy the TTL converter from S&S make sure you can send it back if it doesn't work.


Bill Van Antwerp Canon/Nauticam/Subal/Inon Lots of glass

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Postby Fredrik » Fri Jul 30, 2010 3:11 am

I've been in contact witth Matthias at Heinrichs-Weikamp and received the following answer to my question regarding a TTL converter for the D100

No, sorry. The D100 will not work with our iTTL converters at all. It uses a DTTL system we do not have a converter for.

Looks like I will be shooting in manual mode until I upgrade to a Nikon camera that does iTTL i.e. D200 or later.
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