Grantmac

That looks more like the material you get from Beneath the Surface (us brand) which I've found quite durable. I wish I could track some down in sheet form for a couple custom designs. Can you share a link?

I really liked my 6500 but that battery definitely didn't last long. I'm currently on the hunt for a 6400 although since a large focus will be video I debate if giving up IBIS is worth the improved AF and battery life.

Comparing land performance figures against an UW lens seems less than valid no? I'd like to see how it performs on a FF sensor in a controlled test. I don't personally have the time, infrastructure or desire to do so but I am curious. I have the lens but have yet to be able to take it underwater.

Wetpixel.comTest: Optical performance of Nikonos 15mm, flat and dome...Wetpixel is the premiere community website dedicated to underwater photography and videography

One thing I will say about Ikelite (I don't own one) is they will sell you parts to service it yourself and it's not expensive. Getting Nauticam to even reply about parts is impossible. That said I shoot Nauticam.

High mileage but reliable. Vacuum system works although no valve included. 2 batteries included. $800 USD with the port and lens. $400 USD for body and housing. Located Washington state, can ship from Canada if that helps.

I've had pretty good luck with the DivTek brank on Aliexpress. Only complaint is the anodizing on the balls isn't as strong as ULCS or Nauticam. I also have a set of ULCS float arms but they don't have the lift for my housing. Too bad since they are bomb proof.

If he wants that port and gear I'm going to sell mine. Was going to package it with a GH4 and housing but I could sell separately. You'd need the 45 port for the shorter macros.

Bayonet caddies are pretty much the answer.

I'd trade my 65 for the 45 and extension?

Yeah I was talking with the seller about it and I get the impression they don't really know what they have, just what it cost new.

There is a port 65 on ebay (not mine)

I'm currently using the rather odd 12-50 kit lens with a diopter and WWL-1 but starting to feel it's limitations. Currently debating between the 30 and 45 macro. The biggest limitation I feel is wide angle.

I think it could be related to the higher voltage of the individual cells compared to NiMH.

If I was him I'd be considering a used M4/3 setup. I recently picked up a EM1-II in a Nauticam housing with lens and port for $1200usd, all it needed was a vacuum valve. It's a generation old but I don't see cameras as having advanced much since then.