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Storker

Member Since 05 Dec 2012
Offline Last Active Feb 27 2015 10:21 PM
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Posts I've Made

In Topic: OMD EM5 and Pana 8mm Fisheye which dome

08 February 2015 - 01:38 AM

I have attached a link and photo for stoker regarding the new Olympus 8 mm F/1.8 fisheye PRO

Thanks.

If you look at the Nauticam port chart and the ZEN Underwater as well you will see that some of the ports are listed as dome ports and others are listed as fisheye dome ports. There is a clear difference in the curvature of the glass/acrylic between the two. This is not to say that the 8 mm fisheye can't be used in a dome port and that a lens like the Olympus 12 mm F/2, a killer lens can't be used in a fisheye dome port but performance may vary with each. 

I may be dense, but I don't think I really understood that one. Is the 4.33" a 'dome' or a 'fisheye dome'? I believed it's the latter.


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In Topic: OMD EM5 and Pana 8mm Fisheye which dome

07 February 2015 - 01:26 PM

the coming Olympus 8 mm F/1.8 fisheye..

That was interesting, I didnt't know about that one. Got a link? Do you know if it will work in the 4.33" dome?


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In Topic: OMD EM5 and Pana 8mm Fisheye which dome

01 February 2015 - 01:22 PM

The closer you get shorter the arms


That's obvious. I just don't see the big difference between a rectilinear WA and a FE (provided subject distance is similar)


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In Topic: OMD EM5 and Pana 8mm Fisheye which dome

01 February 2015 - 12:39 PM

Quite the opposite get closer with fisheye lens so you need short arms. Obviously with a rectilinear lens the arms get longer and longer. 

 

That didn't make sense to me. Care to elaborate?


In Topic: OMD EM5 and Pana 8mm Fisheye which dome

01 February 2015 - 12:22 PM

If he is shooting right in front of the port for CFWA that will work well. If instead you shoot 3+ feet away and the water is murky probably a bit on the short side

Sounds reasonable.

Quite a few of my shots are WA, but not CFWA. For that, I prefer my 5"+7" arms completely extended, and even then, they're often on the short side. OTOH, longer arms would make for an unwieldy rig, and I might just as well be shooting with a dSLR rather than an m43. When I try my hand at CFWA, I pull the strobes closer to the housing, but I don't think I'd be particularly happy with so short arms.

Of course, my Nordic waters are usually on the murky side (5-15m viz), so long strobe arms are sort of de rigeur...