Gear News
New SW8 dome port for the Aquatica 4/3 Micro series housings
Along with its new line of housings for the Micro 4/3 series of Camera, Aquatica have introduced the SW8 Port, specially designed to cover Super Wide Angle lenses such as the 114o FOV Panasonic Lumix G Vario 7-14mm F/4 and the 100o FOV Olympus M.Zuiko 9-18mm f/4-5.6. With these ultra wide angle rectilinear lenses, to get the best optical results, the use of a large radius dome port is required.
To achieve the optimum quality over the whole image area, Aquatica uses its legendary 8’’ diameter dome port with an added twist. The SW8 port only uses the portion of the dome lens required to cover the field of view of these extreme lenses. Consequently, the resulting dome port is substantially smaller and lighter, while retaining the optical performance associated with these large hemispherical dome ports.
Whenever a dome port is immersed in a liquid, it creates a Plano-Concave lens element of its own. This additional lens element has the property of retaining the original field of view of the lens (as opposed to a flat port which
will considerably reduce the field of view of a lens). One of the side effects of this optical phenomenon is that it creates a virtual image of the scene being photographed. This image is projected at 4x the radius from the optical center of the dome used. In other words, that scene is now projected at a much closer distance than it is in reality, and a lens will usually need to be focused close to its minimum operating distance.
Using an 8’’ dome wraps the projected virtual image at +/- 12’’ (30cm) from the external surface of the dome lens, while a smaller dome port, such as one with a 6’’ diameter, will force this virtual image to be wrapped a mere +/- 9” (23cm) away. This might be a relatively innocuous difference of distance in normal situations, but it is also common knowledge that the closer the focusing distance, the harder it will be to get adequate depth of field. At these close distances, such small difference does have a huge impact on the success of the images taken.
The Modular System:
Once underwater, a dome port will force the light to radiate towards a central point. To obtain the best performance, this optical center should be located, as close as possible, where the optical center of the lens used is when set at its widest field of view. With the Aquatica system, a modular port extension system allows the SW8 port to be optically optimized to this position so that it can be used successfully with wide variety of lenses.
To complement the SW8 port, Aquatica also offers its well established and renowned 4’’ BK-7 coated glass dome for the Panasonic Lumix G Fisheye 8mm f/3.5 lens, and for Macro work, two dedicated flat port for the Olympus M.Zuiko 60mm f/2.8 ED and the Leica DG Macro-Elmarit 45mm f/2.8.
In keeping with the spirit of the housings it was designed for, the Aquatica SW8 port is compact, and because of its modular nature, its footprint in your luggage will be 1/3 the space than a regular 8’’ dome port would require. This should be a welcome relief for the travelling photographers.
The SW8 Port is priced competitively at USD $579 and will be available in March 2014.
Gear News
Scubapro Free Octopus Promotion 2024
Free Octopus with every purchase of a SCUBAPRO regulator system
Just in time for the spring season, divers can save money with the FREE OCTOPUS SPRING PROMOTION! Until July 31st SCUBAPRO offers an Octopus for free
with every purchase of a regulator system!
Get a free S270 OCTOPUS with purchase of these combinations:
MK25 EVO or MK19 EVO with A700
MK25 EVO or MK19 EVO with S620Ti
MK25 EVO or MK19 EVO with D420
MK25 EVO Din mit S620Ti-X
Get a free R105 OCTOPUS with purchase of the following combinations:
MK25 EVO or MK19 EVO with G260
MK25 EVO or MK17 EVO with S600
SCUBAPRO offers a 30-year first owner warranty on all regulators, with a revision period of two years or 100 dives. All SCUBAPRO regulators are of course certified according to the new European test standard EN250-2014.
Available at participating SCUBAPRO dealers. Promotion may not be available in all regions. Find an authorized SCUBAPRO Dealer at scubapro.com.
More information available on www.scubapro.com.
Gear News
May the 4th be with you!
Oyster Diving have recently been given exclusive access to offer scuba diving courses and fun dives at Mercers Lake, a beautiful lake near M25/Gatwick in the UK.
Oyster have just launched their own dive boat ‘The Blue Pear’ to explore various parts of the lake. Divers can glide around the underwater woodland, see lots of fish and decent visibility. Out of the water divers set up in the purpose built kitting up area, unwind in a warm shower, and off-gas in the café & licensed bar.
To celebrate the start of the summer season, AquaSports and Oyster Diving have teamed up to host a Star Wars-themed open day on the 4th May.
Guests will be able to enjoy discounted tasters of various watersports including Stand Up Paddleboarding (SUP), Canoeing and Sailing. Oyster Diving will be joined by Apeks and possibly other dive manufacturers to display their latest products. Demo gear will be available for qualified divers and Oyster’s sales support team will be on hand for customers with any questions.
Divers wishing to get in the water will need to book in via Oyster Diving’s website where you can also choose to hire any equipment. Non-divers and well behaved dogs are very welcome!
As well as the watersports there will also be music, food and a licensed bar. The fun starts at 10am and finishes around 4.30pm.
Please come along, wear your finest Stormtrooper or Princess Leia outfit and enjoy the fun!
For more details contact: mark@oysterdiving.com
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