tarjan

Thomas: your setup sounds perfect. Focus light is "important" for macro, but only just so.  

BTW: if funds are an issue, you can forgo the gears for your 12-50, since you "can" use the underwater scene mode to select a gross choice of zoom.  This isn't perfect, but the money may be better spent elsewhere, or on a dedicated macro lens.

I've been looking at the photo differences, and trying to figure out which dome to get.  From my understanding the 4.33 can better handle above/below photos and gets a wider overall view, 3.5 is better for closer views and is tiny.  The picture quality looked pretty similar.

I'm leaning towards the 3.5, because I like getting close to things.  Anyone want to sell me on that decision or tell me I'm crazy and should go 4.33?

(my lenses are panny 14, 8mm, 14-42, 45-150.  Only expecting to use the 8mm while diving.)   

Ugh, that's not good.  I just got my omd and have been considering that exact configuration,  Nauticam + 8mm port and I would rather it not flood.  I love the 8mm underwater with my old gf2.