YS-90 Auto quenching

Hi all

I've just got back from Dominica shooting a lot of wide angle and have come across a serious problem with the pair of YS-90 Autos i usually use for macro. When shooting WA i found the strobes were quenching way too much when trying to light a subject with a light background ie sponge with blue water, using Auto 1 or 2 mode or winding them up to full made no difference. The only way around this was taking much less blue water or swithing back to my subtronic, not really what i was looking for

Any suggestions or is it go and get a couple of Inons time.

Hi Shannon,

I'm not sure I understand - you had the strobes set on full power and they were still "quenching early." What do you mean - the shots didn't have enough strobe power in them?

Can you tell us a little more about the shots? What lens were you using, what f-stop, etc.

Thanks

James

Sorry James maybe not described in the best way.

What ever power setting used the strobes would fire but would leave the subject almost totally unlit, i had this problem with the 10.5 and the 12-24.

I then tried some tests on the boat and found the same problem it seems as though the auto sensor will not give me manual control and thinks there is already enough light.

Missed off the f-stops, mainly f8-11 at 80-125th

Hi Shannon,

That's interesting. I had exactly the same problem on a YS90 in the Red Sea last summer. The strobe had done several trips without showing any signs of malfunction and suddenly started to quench.

I never managed to find a pattern in the problem. usually, the strobe would fire OK outside the water but would start to act a bit funny while diving. I woud take a couple of shots and then it would start quenching.

I returned the strobe to Alan James Photography in Bristol, UK. He managed to reproduce the fault, sent the strobe back to Sea & Sea. I think Sea & Sea at first were a bit reluctant to acknowledge the problem, but Alan was quite persuasive and eventually, they replaced the unit.

You might want to get in touch with Alan. he has been extremely helpful and should be able to point you in the right direction to get this resolved.

Thanks JP

I actually bought the strobes from Alan so I will be give him a call.

It seems a bit unusual that both my 90 strobes are giving the same problem at the same time but we'll see what Alan has to say.