Whiskeyjack

Based on what he told me it sounds like that's probably what he means as he mentions physical interference between the adapter and the viewfinder: The MB_EF-m43-BT2 does not fit to the OM System OM-1 due to the physical interference between the adapter and camera body(viewfinder). I already had to grind my adapter a bit as well for it to work with the Isotta housing so that's not an issue if I need to grind more.

Oh wow I just realized your custom zoom gear uses the housing knob and so eliminates the need for the knob on the adapter at all. That is much better as it lets me use whatever is the closest in length to the original setup.

Hi Chris, this is super useful. To confirm, are you using the Metabones MB_EF-m43-BT2 adapter? This is the one I currently own, but the metabones people told me it won't work with the OM-1 and I need to buy the newer version, MB_EF-m43-BT4, instead. If there's some way to make the one I have work that saves me $400... Nauticam also confirmed that ~2mm difference shouldn't really make a difference, which I guess just leaves me needing a custom zoom knob. I have no experience designing 3d printed objects so I'll have to see what my options are there I suppose.

I am also planning to use it with the Canon 8-15. I found a shop in Australia that may have one in stock, if that isn't feasible I'll look into other combinations, though I'm hesitant to purchase without confirmation from Nauticam it would work or a personal anecdote.

If anyone has one of these I would like to purchase it. I did talk to Nauticam and they will make me one MOD (manufacturing on demand) at a 30% price increase, which is painful given how expensive their gear already is.

I'll try this out later with my Retra Pro Max strobes. I seem to remember struggling with burst shooting above 1/2 power but under that it was okay.

You could definitely shoot wide angle at Apo. But you could also just shoot macro there as well. You will definitely not shoot wide angle anywhere else near Dauin.

Yes, this is what they recommended. However, the whole point of me switching from the 60mm to the 90mm was so that I didn't need a diopter for super macro. Oh well, maybe once the new generation of OM cameras comes out I'll switch from Isotta to Nauticam just for the port with the selector switch!

Thanks. They have it listed on their website as compatible with the 90mm in "normal macro" mode. I don't have a Nauticam housing and my port won't let me change modes underwater, I mostly use it set to "S-Macro" mode. When I emailed Nauticam asking if it would work in S-Macro they said: "For MFO-3 to work well, the lens needs access to its entire focus range." So I may be out of luck!

Hi Chris, do you happen to have the Oly 90mm? I'm quite interested in that lens with the MFO-3 as well.

If any m43 users can post some pictures of this with the 90MM macro lens that would be wonderful. I'm pretty interested but don't want to spend $700+ dollars on an experiment.

How did he like it with the 90mm? It would be nice to get a bit wider field of view with that lens at times (can't imagine even with the MFO-3 it would be a good choice for blackwater though!).

Had I known these were coming out I also would have waited... 😅

I wear the same 2mm all year. I don't need it when the water is 28-30 degrees but wear it for protection from jellyfish and the sun. I run warm so I never need a 3mm or 5mm diving in the tropics.

I find the number of creatures to be similar but to be fair I'm always shooting macro in Anilao. I dive in a sharkskin all year (maybe 2mm equivalent), but I run warm.