Phil Rudin

Today Marelux added a Marelux five inch to Nauticam N120 20mm port adapter so Marelux extensions, ports and the Aquista 135D wet lens can be used on Nauticam housings. This adapter can be found in the products section under ports and adapters at the Marelux.co website. Marelux has also added Hugyfot, Isotta and Subal to Marelux adapters. Additional Nauticam adapters have been added as well NA N100 20mm to MX, NA N120 30mm to MX and NA N100 17mm to MX for use with WACP-C among other things. Marelux already has an NA N120 20mm to MX for use with ports, extensions and N120 WACP-1 WACP-2 and FCP if you already own them. Marelux already has a Sea & Sea to MX 20mm. I believe Marelux will be adding to the dry mount line of wet wide lenses this year. For praticual buyers these additions make the transition to Marelux products more manageable.

Part number 31706 Marelux to Nauticam N120 extension ring 20, retail $200.00. Not yet posted on the products page. Any one going to take a shot at why Canon RF 28-70mm F/2.8 is not supported?

Ask and answered.

Yes, Marelux to Nauticam in N120.

I am a Sony user so I have not tested many Canon lenses full frame but I am curious why the most obvious Canon RF 28-70mm F/2.8 IS STM lens is not listed on the Nauticam or Marelux page for wet wide lenses. It seems small enough and has an expectable minimum focus distance. With the two Nauticam lenses ( WACP-C & WACP-1) and the Aquista 135D the lenses are designed to be their widest at around 28mm with Nauticam at 130 AOV max and Marelux at 135 AOV max. The only three full frame lenses I am aware of that will zoom through the entire zoom range with wet wides are the Sony 28-70mm and 28-60mm kit lenses plus the internal focusing $2900.00 Nikon Z 24-70mm F/2.8 S II which works with the WACP-1/1B and WACP-C with the proper port extension's. The 28-70mm offering give an AOV range from 130-59 degrees while the Sony 28-60 gives an AOV of 130 to 69 degrees. Many Z users have adopted the Sony kits using an adapter to avoid the expensive Nikon lens. I don't believe Sony lenses can be adapted to the Canon RF mount but I could be wrong. Any of the other lenses listed regardless of a starting point of 14mm, 16mm 24mm are all going to need to be zoomed to 28mm to get to 130 degrees without vignetting. Then be zoomed out until they stop or hit the wet lens which is the case with lenses like the Tamron 28-75mm which extends from 28-40mm before hitting the wet lens and gives an AOV from 130 to 90 degrees but only with WACP-1/1B. I don't expect that a 24-105mm would do any better. These limitations are listed on the Nauticam port charts but have not yet been added to the Marelux charts. Next you have the issue of port extension sizes on full frame. Nauticam has both N100 and N120 sizes which complicates the issue somewhat while Marelux uses the five inch system for all current full frame housings. Last you have the issue of the diameter of the wet lens. If you look at WWL-1/1B, WACP-C and WACP-1 they all are widest (130 degrees) at 28mm and get progressively better in terms of corner sharpness and use at lower F/numbers the greater the diameter. The larger the diameter the greater number of lenses that can be used as well with the $11000.00 WACP-2 at 280mm having the greatest number of lens options. With WACP-C at 170mm, Marelux 135D at 180mm and WACP-1/1B at 190mm you should be able to extrapolate out to get an idea of what each wet lens should be able to do in terms of lens selection and the rest. None of the charts for full frame lenses list any primes that I am aware of but that could change going forward. I have a few of the excellent Veltrox primes for lens use above water and intend to try the Viltrox AF 28mm F/1.8 for Sony at some point with Aquista 135D to see how it compares to the lovely Laowa 10 and 12mm F/2.8 offerings. The Laowa 12mm works very well in the Marelux 140mm dome and makes a very small package at a rectilinear 122 degrees.

Many Nauticam users are already using the N120 to N100 35.5 so it will be linked to demand for N100. I suspect it will come in N100 but no conformation at this time.

I have sent your lens suggestions to the design team for consideration and they are in the process of additional lens testing. Also be aware that adapter rings for Nauticam and Sea & Sea are ready to ship so that the Aquista 135D can be used with those housings. Adapters for subal , seacam , hugyfort and Isota will also be coming. These adapters also allow the use of many Marelux ports and extensions on the listed housing brands. For Nauticam I believe N120 will be coming first.

I am sure lenses will be added and removed as we get user feedback. For Sony I will be trying the 28 F/2, Rokinon 28-60 F2.8 and a few more.

Tom is an expert when it comes to remote triggering. Just for fun you both may want to checkout the Marelux remote trigger module which is triggered from up to 10 meters using a blue light. The Marelux.co web site includes a video of the product being used. It can be found under products in the innovative products section. it is designed for newer Marelux housings that are equipped with a small port to detect the blue light. It mounts under the camera tray. 42510 Remote Shutter Module Patent of invention Material: POM Dimensions: 72mm(W) 30mm(H) 30mm(D) Weight in Air: 37.5g Effective receiving distance : 10 meters Optical signal receiving angle : 140 degrees Equipped with a built-in battery that supports charging via the USB-C interface Compatible housing models: MX-R5II, MX-R6III, MX-A7V, MX-A1II, MX-A6700, MX-Z6III, MX-GH6/7, MX-S1RII

Marelux new Aquista 135D water contact wide angle lens is ready for shipping. This is the third lens in the Aquista line and the first dry mount lens not requiring a flat port. Depending on the camera lens being used the Aquista lens mounts direct to the extension ring required for that lens. With commonly used lenses like the Sony FE 28-60 & 28-70mm the Aquista 135D AOV is 130 degrees. With lenses like a 24-70mmm as you zoom in the lens will work out to 135 degrees (diagonally) at around 26/27MM. This new lens retails in the US For $2599.00. Go to the Optics section on the Marelux.co web site to download the lens compatibility charts. Technical Specifications - Dimensions:180mm Outer Diameter x 143mm - Body Construction:Hard Anodized Aluminum Alloy - Lens Construction:6 elements in 5 groups - Lens Coating:Anti-corrosion Coating on the outside of the dome. Anti-reflection Coating on other surfaces - Field of View (diagonal):135° - Weight (Air): 2210g / 4.87lb. - Weight (Underwater) :Neutral Buoyancy - Port Mount:Series 5 - Depth Rating:100m

Marelux Macroview 60 wet conversion lens is now shipping and it looks like this. The mount is 67mm and can be used with a flip adapter, direct 67mm adapter or with the bayonet adapter shown on the macro port photo for the Sony 100mm macro lens. The bayonet mount adapter ship's with the lens and can also be used with the Marelux Macroview closeup lenses. Installed the 100mm 24 degree AOV becomes A 60mm 40 degree AOV. More information can be found in the products section on the Marelux.co website.

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The new A7R VI will be an exciting new camera offering for those in the Sony universe and beyond. I have seen some speculation regarding the new battery, its size and if the new camera needed it to power the extra features and speed. We have seen battery upgrades for all manufactures over the years and why not if the camera runs more efficiently and with greater speed. The A7R VI comes not only with a new battery but also a notable up grade from the BIONZ XR (A7RV) to BIONZ XR2 Processor which would have been a speed boost without the new battery. The old battery and the new one are almost identical in size 52 X 22mm for the old and 52 X 23 for the new. In the photos you will see the big difference is that the old battery has the contacts on the wide side while the new battery has them on the end. So no big change in housing size only in placement of some controls.