D-2000 connection/exosure question

I have been using a Canon underwater housing with with my P/S A640, using the YS-25 with Sea and Sea arm assembly. I want to upgrade to the G9 and add an Inon D-2000, using the YS-25 and D-2000 together

I am dealing with 2 issues where I hope more experienced people can help me out.

Can I use the Sea and Sea base and add ULCS ultralight ball/arm assembly for adding the D-2000? Is there a better way to connect the D-2000 to the S&S base?

For exposure control, the D-2000 will send out a pre-flash to match the camera with subsequent flash calculations in the camera. During the main flash, the YS-25 will flash and limit light output based on its settings, which is controlled by the f-stop selection dial. Will I have overexposure problems with this setup? Since the camera will not expect the YS-25 flash, I am wondering if there will be too much flash from the D-2000. I usually shoot in aperture priority mode.

Anyone come to any revelations on getting wider than 35mm eq. from the Canon G9 housing? I have read the threads here of those frustrated with the Canon housing. The Ikelite housing solves the issue but is considerably more $$, as you all know.

I had considered using the YS-110 but several threads here were not satisfied with the results of that strobe. Have those issues been resolved and that becoming the better option? I like the D-2000 since it can limit the camera’s flash output, allowing faster recycling, which the YS-110 does not appear to offer.

If anyone knows other issues I have not considered, suggestions are welcome.

I've not used this setup but have used the Inon with another strobe. The Inon in the mode you're discussing (using the Inon's advanced circuitry in auto mode) puts out a large preflash. Your camera reads this as there is plenty of light and uses a minimal flash. The YS25 should then ignore the preflash and fire off of the Inon. The amount of light coming from the YS25 you are controlling by the f stop dial on the back of the YS25 unit so you should be fine.

I've not used this setup but have used the Inon with another strobe. The Inon in the mode you're discussing (using the Inon's advanced circuitry in auto mode) puts out a large preflash. Your camera reads this as there is plenty of light and uses a minimal flash. The YS25 should then ignore the preflash and fire off of the Inon. The amount of light coming from the YS25 you are controlling by the f stop dial on the back of the YS25 unit so you should be fine.

Thanks for the info!

Now I just need to figure out how to connect it all together.

Hi,

You might realize that the ULCS balls are the "standard" 1", while the Sea&Sea are somewhat bigger. This is atleast true for the non-light version. If you start from the T-nut and add on the ULCS from there then you should be fine.

/Erik