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Member Since 29 Aug 2008
Offline Last Active Jun 25 2014 05:46 PM

Topics I've Started

Nauticam housing specific question

10 April 2013 - 07:39 PM

Hi All, 


On the underside of my 7D housing there are 3 threaded holes presumably to attach a tripod to.

Anyone know the thread info for these?

Just wanted to possibly confirm it could be a 1/4" UNC....

UNC seems be a hard one to find, but I would think this is the standard size for camera tripod mounts as well.

Also could UNC be called something else overseas?


Please correct me if I am mistaken.








P.S.  I am unsure if other housings have the same tripod mount hence the title.

Chelidonura species?

30 January 2013 - 04:50 PM

Dear All, Anyone have an idea what this Chelidonura species may be?
Found at Edithburgh, South Australia in about 3 m of water.
Slug was about 25 mm long including tail.
Phil Mercurio

Canon 7D, tokina 10-17 and Kenko 1.4x teleconverter combo question

13 June 2012 - 11:57 PM

Dear All,

I saw this awesome video some time back:

Posted by Ryan Canon at Reef photo and video, optical strobe firing, manual flash at 1/128

I am trying to gain some intial knowledge and experience with my wide angle setup (*Canon 7D, tokina 10-17 and Kenko 1.4x teleconverter) and think I may be doing something incorrectly.

Have any other Canon 7D users achieved speeds this fast with the combination mentioned using fresh batteries in both the strobes and camera?

I could be mistaken but I count approx 13 strobe flash fires in a row in a span of about 7 seconds which is almost 2 per second (*0:09 to 0.16 on the video time).
I seem to be getting about 1 flash per second.

I have ensure that the onboard flash settings are set to manual and multi-flash with the power discharge adjusted in cutom settings. The camera is set on high speed continuous shooting as well. The strobes are set to low.
I am unsure if this is an onboard camera flash issue and recharge or the strobe recharge time which is limiting the speed.

Any help or advice would be appreciated.

Phil Mercurio