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Reef Ramblings...


All About Strobes


So many choices, so many technical words; what really is important in underwater lighting? 

This knowledge-base article explains it all!

  • Fiber Optics

  • Electrical Sync cables

  • Specifications

  • Comparison

  • Quality of Light Comparison

  • Guide Number

  • Angle-of-Coverage

  •  Recycle Time

  • Color Temperature

  • Diffusers

  • Syncing

  • TTL vs. Manual

Elly Wray's article "All About Strobes" explains it all with jargon-free explanations and example imagery.

All About Flash Triggers


You may have heard the term "flash trigger", but you may not understand these things.  You may even have seen one and it seems to be nothing more than a little black (gray) do-nothing box.  That's ok.  We explain more than a few things about these devices.

  • What is a “Flash Trigger” and why would I want one?

  • Benefits

  • Limitations

  • Making the switch

  • Compatibility

  • Which cameras benefit

It is all explained in our knowledgebase article "What is a 'Flash Trigger' and why would I want one?"

One, Two, Three, THREE Close-Up Lenses in One !


The new Saga Trio is three close-up lenses in one.  Some might count it as four lenses in one.

The Saga Trio contains two close-up lenses (diopters) in a sealed unit.  Two easy to use levers allow you to select just the right amount of 'power' you need in just a second or two.  One lever operates a +5 diopter lens, the other operates a +10 diopter lens.  This innovative device allows you instantly to select any one of four combinations of close-up lens strength.

  • 0 power (no close-up lens)

  • +5 diopter

  • +10 diopter

  • +15 diopter.

See the Saga Trio here.

A Guide to Nikon DX Lenses


Confused? Lost? Overwhelmed with lens choices?

Our photographers travel the world shooting in all types of underwater environments and share with you the knowledge you need to choose the proper lens for the job.

  • Macro

  • Fisheye

  • Super Wide Rectilinear

  • Mid-range Zoom

  • Specialty Lenses

In the Nikon DX Mount Lens Choice Guide we explain the choices and provide sample images for each type of lens.

Canon 8-15 /4L Fisheye Test Shots


Moments after our friendly UPS driver Ron dropped the package on our door step we were taking measurements and cutting metal to get this impressive new lens in the water!

Our goals were to sort out whether or not this lens is a good choice for close-up wide angle shooting with a small dome, and to get an idea of how its performance stacks up when compared to the popular Tokina 10-17 Fisheye Zoom. The complete writeup, along with sample images, is available here.

In short, we are impressed. The 8-15 has less purple fringing and is sharper in the corners than the Tokina lens. Its AF system is very fast, and very accurate. This is a great addition to the arsenal of a Canon user.

New versions of our popular Zen DP-100 4 Optically Coated Glass Fisheye Dome Port are being constructed with integrated spacers to support this lens.

DP-100-AC for Aquatica
DP-100-HC for Hugyfot
DP-100-NC for Nauticam
DP-100-SC for Sea & Sea

Owners of DP-100-S3 or DP-100-S4 for Subal housings can use a 20mm Subal Extension Ring to support 8-15 in those ports.

This Bug is for You!


If you've been to a US consumer dive show (or the DEMA show) in the past year, you probably noticed the amazing Pygmy Seahorse photo by Doug Seifert on the back wall of our booth and/or the rather bizzarre looking

Inon UFL-MR130 EFS60 Underwater Micro Semi-Fisheye Relay Lens
for DSLR cameras in our booth. The 'lens that is as long as its name' always draws a lot of attention. Or perhaps you caught Eric Cheng's feature in Wetpixel Quarterly Issue #8. Either way, you've probably had the 'micro fisheye' itch ever since.

Inon UFL-M150 ZM80 Micro Fisheye Conversion Lens for Compact Digital Cameras

Now compact camera enthusiasts get to have some fun with this amazing technology. The
Inon UFL-M150 ZM80 Micro Fisheye Conversion Lens provides a 150° ultra-wide angle fisheye view for a whole new perspective on macro subjects as close as 0 cm. Simply attach the lens using the appropriate Inon mount base and lens adapter, set your camera's zoom position to approximately 80mm (35mm film equivalent) and let the fun begin!

Soft Coral Goby (2.5cm) Canon S90

Unlike conventional fisheye lenses which make macro subjects into a dot in your image, this lens fills the frame with your macro subject and with a stunning fisheye-view background as well.

The lens barrel is threaded to adjust the lens position to accommodate different cameras. Since the UFL-M150 is an afocal conversion lens, your camera's autofocus remains fully functional and the S-TTL functinality of Inon strobes is totally compatible.

Perch Sculpin (10cm) with Canon S90

For a circular fisheye view of the underwater world, just zoom out and catch the fish bowl.

Raggy Scorpionfish (20cm) with Canon S90 @28mm

All sample photos ©F. Torii

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