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pmerc

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

 

Thanks!

 

Cheers,

Phil

 

 

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.
Thanks!
Cheers,
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.

Cheers,
Phil Mercurio