I'm considering switching to a full face mask as I typically dive closed-circuit, but am concerned about the impact it will have to DSLR viewfinder visibility. I'm interested in any general comments, though specifically I'm currently looking at the OTS Guardian mask and I have an Aquatica with AquaView.
I dive this set-up when I volunteer at our local Aquarium. With the AquaView you have to "hunt" for the image a little more due to the "high profile" of the mask. It is a little harder to quickly put the camera up to your eye and fire of a quick shot. I find I am really pressing the camera firmly up against the mask. I dive the Guardian 3xweek and was one of the test subjects for the current model. While it has it's place, for my everyday diving I prefer my low profile standard mask. If you do go with this suggest putting a swivel valve going into the second stage.
NWDiver,
Thank very much for your comments, much appreciated. I had suspicions that the greater profile of the mask would cause some issues, so at least you've been able to confirm that for me.
If I switch to the Guardian or similar, it would purely be to mitigate CCR risks so the swivel would not be a necessary component (for the loop anyway).