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errbrr

Member Since 14 Sep 2009
Offline Last Active Aug 13 2017 12:29 PM
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Posts I've Made

In Topic: Taking the housing as carry-on

11 August 2017 - 12:42 PM

I've also managed to get an old pelican case (made before they introduced pressure valves) stuck shut after a flight. Prying that open without breaking it was stressful, but a good indication of product quality that it holds a seal so well after 30 years on a single o-ring!


In Topic: Taking the housing as carry-on

03 August 2017 - 12:49 PM

Having a vacuum port on the new housing is pretty handy. On my previous housing I used to remove the port o-ring to ensure it didn't vacuum itself shut during the flight.

 

The Aquatica buttons on the old housing were very sturdy over 8 years of travel and cave diving. I have already bent and replaced a Nauticam button in the first six months, which I think happened in a pelican case. Hopefully it was a freak occurrence as changing over Nauticam buttons is a pain in the behind due to the complexity inside the housing.

 

I am looking at getting a neoprene camera wrap to cover the body of the housing in the same way the dome port cover protects the front. I think this will be a good option for small boat diving as well as for travel.


In Topic: Radio strobe trggers don't work underwater

19 July 2017 - 05:10 PM

The delay on ultrasound needs to be considered. You would likely be looking at a shutter speed maximum of 1/50th once you are more than a couple of metres from the flash. As Bill says, there is a shortage of commercially available components unless you know some submarine guys.

 

I have done some research into better transmission options for triggering off camera strobes (dry cavers use infrared which also doesn't work underwater) without anything looking particularly feasible. Ultrasound is probably the closest and would require some kind of delay in the circuit to keep the off-camera strobe and the shutter in sync. 

 

Ultraviolet laser beams are tempting but a bit carcinogenic. Long cables are impractical in most scenarios. Shooting bulb with manually triggered off camera strobes works in complete darkness but is a game to get good composition when you can't see what you're doing. It might be worth trying a visible light trigger on a delay circuit to remove the on-camera flash from the picture - it's on my to do list, one day.


In Topic: What to buy? INON Z240 or wait for the new release? Rental?

05 July 2017 - 09:17 PM

Not much difference (if any) between the v2, v3, and v4 of the inons. I think they changed the aiming light from halogen to LED and that was about it. I spoke to the inon guy at Oztek and got the feeling there might be a few actual changes in the next version, but it was an incremental upgrade rather than a revolutionary one.

 

The inons are light to travel with, take AA batteries and produce a lot of light. Try not to use them repeatedly on full power in warm water and you'll be right for years. Have a good trip!


In Topic: RETRA Strobe Thread

05 July 2017 - 09:13 PM

I don't suppose they have the ability to be fired by push button on the strobe itself, rather than optical or electrical firing? This would be a very useful function in cave diving photography.

They don't, I asked. 

 

Best solution to this I have found is the triggerfish that Hedwig made me with a piezo button in them. One of them stopped working after a couple of months but the other one is still good. Very handy for increasing the creative options.

 

Shooting in the dark is more fun than wrestling with tripods underwater  :)