Grantmac

I ran the 12-50 in that port with the WWL-1, it had to run at 14mm because of the WWL-1 but not because of the port. Also compatible with more diopter mounts. But you give up the rather dubious "macro" setting.

If you run the port for the 60mm macro then the WWL-C won't vignette at 12mm.

Keep in mind the WWL is a bit of a fisheye. Have you considered defishing in post? Or do you want something tighter than the 8mm in addition to being rectilinear? There have been people who like the 8-25 but that's a pretty expensive lens which needs expensive ports.

I don't know of any domes which are coated on the outside, it would be attacked far too easily.

Have you tried de-fishing in post?

To my mind this would be ideal for Giant Pacific Octopus, letting me get a wide perspective inside the den while also being a decent FL for filming if I happen on one out for a stroll. I'd prefer to have it on a flip holder. If it folded over the port I could see 3D printing some sort of cradle to support it when folded and possible add flotation. I'm not a huge fan of the stix since they lose flotation past 30m but I rarely do macro that deep anyway.

hopefully they offer a float collar as well.

Price quoted at $999, so more than the MV60 which makes sense given how much more glass is in there. I'll be very curious to see test shots and specs.

Which version of DP100? There are ones for the Tokina and the Canon with different extension built in. I believe you can use the Tokina version with a Canon if you add a 20mm extension.

The ports and lenses, depending on what they are, might be worthwhile.

On Sony you need the 35.5mm N120 adapter plus the DP100T for N120. I wouldn't buy the DP100 new, I'd look for a 140mm port instead. But the DP100 show up used fairly often.

That Sigma 20-200 is very tempting as a do-everything sort of lens. Like the 12-50 on MFT but both wider and tighter. Should be a very easy zoom gear to make as well for us Nauticam folks.

You are thinking of the EMWL. I'm talking about this lens: https://www.nauticam.com/products/macro-to-wide-angle-lens-1-mwl-1-150-deg-fov-with-full-frame-60mm-macro-lens Although obviously nowhere near as wide.

Like an MWL-1 for longer focal length and not quite as wide. I'll be curious to see cost and some test shots.