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I recently purchased a Zen dp-100-NT port second hand to use on my Nauticam housing. It came with a Sea&Sea blue o-ring, but no silicone. Is it safe to use Nauticam silicone on the o-ring or does it need to be Sea&Sea silicone? As my housing is coming in from maintenance today, I'd really love to take the Zen for a dive tomorrow, but I am scared of using he wrong grease and possibly causing a flood. Anyone with experience on this?

Hey there everyone, I have a Sony A7ii and the new 85mm FE f/1.8. I shoot in shallow water, so structurally the Meikon housing should be perfect. My question is whether or not the 85mm will fit in the port. Meikon said that they didn't recommend it, but it is only 5mm wider than some approved lenses, so I figured I would ask if anyone who has both the lens and the housing would be willing to check if it fits for me. Thanks!

Well it is finally time for me to release my complete port charts for the Olympus and Nauticam housings for the micro four thirds cameras. What this basically means, is that if you use an Olympus or Nauticam housing and want to know what all the port options are and which lenses are, or could be, compatible. I have been working on these lists for the last two months or so using forums, hunting down port charts and comparing them. Everything is done by me (Enoshima) and by hand, meaning that there is a possibility that I have made a mistake. The charts are split in the three different port types (Olympus PEN port, Olympus OMD port and Nauticam port). The gear possiblities are in a seperate tab. A lot of the chart is based on the official charts (olympus, Nauticam, Athena) All unofficial parts of the list are marked in color and have a note giving the basis of the (unofficial) compatibility. Some are more likely then others (same port only for PEN in stead of OMD, others more vague What is surprising, is that the olympus OMD port, which many think has very limited options, has the most port availability. More than Nauticam. This is ofcourse counting many unofficial compatibility options. I would really appreciate it if you can help me to verify the unofficial parts of the chart. If you have a certain port and lens combination that is marked as unofficial, but unconfirmed, please post here and I will update the list. Since Wetpixel does not allow me to upload the excel files directly, here are the link to the folder in my google drive with the files: https://drive.google.com/folder/d/0B_lX0d0AxMXVVWNJY0lCZmVPZHc/edit There is a "last updated" date in all the list (see the notes). These are the currently uploaded versions: Olympus OMD: 11-2-2015 Olympus PEN: 11-2-2015 Nauticam: 17-2-2015 (Previous version 12-2-2015, added 65mm macro to oly 12-50 and removed incorrect 30mm extension for 4.33 dome on Pana 8mm and oly 12mm) There are also a lot of lenses that currently have no zoom/focus gear, or are simly very expensive. If you want a gear that is currently not there, go over to http://www.Deepshots.co.uk. He helped me a bit with the gear part of the port charts and will also make gears on request. If you have any comments on the lists, please post them. When I have time I will definitly look at them and I will try to keep them updated. Feel free to post the link to the lists anywhere. You can also use parts of the list elsewhere, as long as you don't claim it as your own. As for myself, I currently have very little money (buying an E-M1 and underwater housing will do that to your wallet) and only have the E-M1 and olympus standard port (PPT-EP01) by using the Zen adapter and the port from my old PT-EP01. The lens is my trusting 12-50mm with D&D custom zoomgear. I will soon upgrade using the very affordable ports from AOI.