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Olympus 770 w/ Inon D-180

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Hi all,


I have a bit of a dilemma I'm hoping someone out there may be able to help with.

A few months back I purchased an Olympus 770sw, olympus housing, Inon tray & 165 wal,

I also have an Inon D-180 and fiber cables from a previous setup that I use with this rig.


Anyway, shortly after receiving everything I hit the pool with the rig. While most of the pics came

out fairly good I had a few where the exposure was just way off on basically identical pics.


Fast forward to Grand Cayman last November and I experienced the same kind of thing. One pic would be OK, the next would really under or over exposed. I'm sure the strobe had time to recharge, I know the fiber cable is OK, just cannot figure out what the issue is. Additionally most of the underwater pics I took had quite a blue tone to them.


So I was wondering if anyone out there had experience with a 770 and external strobe that could lend some direction. If so, what mode do you use on the camera when shooting with the strobe?


Just as a side note, when shooting topside or underwater without the strobe the camera performs reasonably well.



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Thought I would bump this back to the top. Still in need of help.


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Just wondering if you are using your D180 in auto or manual mode ????


i have a D180 that i have used for a few years , the first camera i used it with DX3000 . it gave similar results as you spoke about with the 770 when the strobe was set to Auto. so i used it in manual mode dialing the power up and down and swapping diffusers as required to get good lighting. this took a bit of getting used to but i got the hang of it after a while .

the second camerai used it with was a sont T3 and with this camera i used the D180 in Auto and it gave reliable exposure .


also does the 770 have preflash , if so i think you have to

install magnetig plug or something so strobe ignores the preflash also how many preflashes does the 770 do, i think some P&s cameras preflash up to 3times before the main flash ???? (read the manual). try shooting in manual mode and see what results u get.


Hope this is a bit of a help



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Thanks for the feedback.


I have tried using the strobe in both auto and manual (adding/removing the magnet) with the 770 but results are still very dark pictures.


I'm unsure about the 770 having a pre-flash. I have written Oly (nothing in the manual) and Inon and the company I bought the strobe from looking for help.


I did a little test last night:


Took a pic into a mirror (with the film over the internal flash):

I can see the internal flash fire

I can see the strobe fire


Which would seem to tell us that I just "need more light" but even after adjusting f-stop setting on the strobe etc the pics are still very dark.

Additionally I've noticed that when I use the strobe with the 770, the strobe fires twice (pre-flash and then image taking flash....I assume)


These two things lead me to believe that possibly the image is actually being captured while the strobe is firing the first of it's two flashes (the weaker pre-flash) which is resulting in the dark images. Or so I think ;)


fyi...when I use the strobe with my 5050, it only fires once and all works great.


Hope this helps, really looking for suggestions on how to resolve this issue quickly as we are heading to St. Croix in less than a week :o



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