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twinner

Member Since 22 Dec 2005
Offline Last Active Yesterday, 08:26 PM
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#358531 5D3 Lenses and Ports

Posted by twinner on 04 March 2015 - 09:04 PM

One more vote for the f/4.0!

I recently replaced my f/2.8 II that was stolen with the f/4.0. The f4 is better all around unless you need to shoot wide open at 2.8. Here are some recent images with the f/4.0 https://samysunderwa...usm-underwater/




#338258 Canon 16-35mm f2.8L II Dome?

Posted by twinner on 17 October 2013 - 08:03 AM

You are going to need the proper extension ring with any of theses setups. I use a 70mm with the Zen 9" and nauticam housing. I,m not familiar with the pro-one domes so I can't comment on that one.


#338254 Canon 16-35mm f2.8L II Dome?

Posted by twinner on 17 October 2013 - 07:15 AM

Unfortunately all rectilinear lenses lack some corner sharpness behind a dome. The best solution is to use the largest dome you can and stop down on the lens. I use the 16-35 II with the Zen 9" without a diopter on 5D Mark III and find the corners quite acceptable. On a cropped body the corners will be even better. By adding a diopter you may add some sharpness to the corners but I don't think the 16-35 II needs it.