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Member Since 30 Mar 2017
Offline Last Active Today, 01:00 AM

Posts I've Made

In Topic: Seafrogs ST-100 Pro Underwater strobe - need your openion

Yesterday, 11:40 AM

You're right, I'm not sure what it was, but one of my strobes was always firing in TTL, regardless of anything, while the other was sometimes doing a single flash instead of double, resulting in a lopsided exposure, and the right magnetic switch sometimes had an effect on it, and sometimes not - and it seemed different between on land and at depth, and sometimes turning it off and back on fixed it.


For what it's worth, I was able to figure out this issue, eventually. The fiber optic sockets in my housing are offset to the left from the flash head, and there is a little reflector guiding the light to the left socket, which ends up not aligned with the flash (the right one is fine). The resulting weakened pulse is sufficient to trigger the attached strobe on the stronger main flash, but not on the weaker pre-flash. Fortunately, the fiber optic cables that shipped with the strobes had a double FO plug in each box - I disassembled the Sea & Sea type L-shaped plugs on the cables, put the cables into that plug, and now both cables go into the properly aligned socket.

In Topic: Seafrogs ST-100 Pro Underwater strobe - need your openion

15 June 2019 - 05:37 PM

Both my ST-100s died shortly after arriving and got replaced. Other people had their Meikon/SeaFrogs items that had problems replaced with a minimum of fuss.


TTL via fiber optics works - it's the only thing that does, actually. It's basic slave TTL with no adjustment or compensation, equivalent to YS-03. Manual mode works, but only with wired triggering, not fiber optics.

In Topic: Seafrogs ST-100 Pro Underwater strobe - need your openion

15 June 2019 - 10:10 AM

Since you purchased it directly from SeaFrogs, I would suggest you contact their support. They're generally quite responsive about such issues. The strobe sounds dead, but chances are good you'll get a replacement.

In Topic: Beginner question: Mininum focusing distance

13 June 2019 - 10:39 AM

This may be relevant: http://wetpixel.com/...showtopic=61824

In Topic: how necessary are wet lenses for canon g7 mark II

10 June 2019 - 10:51 AM

Meikon makes a pretty good housing for X-T3 - costs $655 with flat and dome ports, plus another $120 for vacuum system. Aside from lacking a zoom gear for 10-24mm lens, it looks like a fairly capable unit.