kadleck
Contributor
I spoke with Ikelite and they told me the recommended choice is the #3944.75 with Ikelite TTL sync cord.
Absolutely! If you use the sync cord, you will have the option of TTL flash. With the controller (which is really for those cameras/housings with no TTL connectivity), you will be left with manual only (you can, if you wish, use manual with the sync cord. I have always used TTL).
Also, with the sync cord attached, the camera 'knows' it has an external flash and will not fire its internal one. This means you have no need to mask it off.