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albert kok

Member Since 02 Sep 2006
Offline Last Active Aug 31 2014 06:58 AM

Posts I've Made

In Topic: Personal Chumming Device (PCD)

18 August 2014 - 11:30 PM

Hi Steve

I am not promoting anything, just suggesting a device that might  work under the right UW conditions, and in the hands of experienced photographers working solo.  Havent tried it with sharks (yet :crazy:  )..It did work very well with the groupers.  Its like feeding  a cookie to a dog. After a couple of dives the groupers will recognise you and will come close, even without the device. Its called 'intermittent reinforcement'. The reinforcer in this case is a weak smell stimulus, not at all like a crate containing  loads of dead fish parts.  And you can alway hide the bottle under a stone or piece of coral, if you feel uncomfortable with carrying it in your BCD pocket. On the other hand,  chumming  with bait crates might still be the best and safest method for groups of divers/photographers going out to visit sharks under supervision,

In Topic: Red Sea Nauticam Tryout Alex Mustard Workshop Pics

05 July 2014 - 08:56 AM

Yes, With Photoshop you could probably get rid of the knees. And..probably also the bikini top? Mermaids dont wear anything (they told me). Please forgive  me the joke. Your initiative and collection are just fine! And some people believe mermaids also had knees. See the pic of Kopenhagens mermaid.

In Topic: Red Sea Nauticam Tryout Alex Mustard Workshop Pics

05 July 2014 - 05:44 AM

I'm sure it meant a lot of work to get the mermaid model in the right position. But for me it was bit odd that you could still see her knees  pointing trough the tail.  (-:

In Topic: Sea & Sea YS-01 strobe(s) with Ikelite 6801.71 housing (Nikon D7100)?

28 May 2014 - 10:06 AM

With an ikelite DSLR housing you cant use fiber optic cables. But you can buy the Ikelite optic converters that transform the electrical  sync signal into an optic signal. But only for their DS strobes  See also  http://www.uwphotogr...0-strobe-review

In Topic: Ikelite housings: fiber optical or electrical?

27 May 2014 - 08:49 AM

Hi Mark, yes I know.  I have used these electrical  sync chords  with Ikelite strobes  for many years. And the technology  behind it is great. But with electrical open water connections you always risk leakage, corrosion, broken pins  of connectors etc. Fiber optics just seems to me a more advanced way of using flash underwater. Without  loosing TTL (for those who like it), sync speed, and  too much battery power. Perhaps the time has come  for Ikelite  to make a step forward, and bring out a  DSLR housing with  electrical and optical connections. If they could also keep the price low, it could become be a great succes.

Cheers, Al