Apr 072014


Quite surprised to see a post here again yes, I am not dead…. but still more or less on baby break, I had not dived in 2 years. I had actually sold my entire underwater rig (Olympus XZ-1, Olympus housing and two Ikelite Strobes), so now this time, I not only had to get back to diving, I also had to learn to handle the new gear (after much surfing, I settled on the Sony RX100II, a Recsea housing and ONE Sea&Sea YS-D1 strobe. Unfortunately it shows in the results, which are sub-par, but I am posting them anyway (may the  merciless internet comments commence!)

Apr 162012

It took a while to process but here it is, the diving movie (select scenes from a few hours of footage). I used the Gopro Hero 3D system, modified with flat ports by Eye of Mine, which worked great, especially head mounted.  Color at 50 ft of depth isn’t great and of course there were no lights.




BTW, for full enjoyment, you’ll need some of these dorky red/cyan glasses:


Apr 012012
Mar 032012

In preparation of my next dive trip I stumbled across Nightsea, a company dedicated to fluorescent photography, which can be quite amazing at night. Fluorescence is present during the day but usually disappears as it is overpowered by the ambient light present. Check out some of the images! Of course not everyone likes night diving, so sometimes it is hard to find a buddy, and obviously it comes with its own challenges and perils. It is however possible to take fluorescent images during the day. Charles Mazel (founder of NightSea) published an interesting paper in Limnology & Oceanography: Methods in 2005 outlining this. The principle is to excite the fluorescence with UV light (blue filter in front of the strobe), restricting the light to less than 470 nm wavelength, and to take the photo with a yellow filter, which passes light over 500 nm. Furthermore, the shutter speed should be kept at ~ 1/500, reducing ambient light to the point of taking an almost completely dark photo if no flash is used. Thus, (almost) all what is recorded if the fluorescence of the object (plus a minute amount of blue light). This is a simple and pretty ingenious method.

Now I am not in the Caribbean yet and the lakes here are still frozen (nor do I fancy diving in the ocean with temperatures outside around freezing), but you can have plenty fun around the house, as there are many things that fluoresce – be warned, that includes dirt specks!

Photos after the break

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Feb 292012

Thanks heavens this is a leap year so I still get to publish the February Image in February (tick tock, tick tock…). Taken at Cayman Brac with an Olympus XZ-1 and the Olympus housing, Ikelite flash (single) at about 30 ft. As always, feel free to download share for the designated purpose.


8:5 Ratio


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Feb 112012