RSW
Second Officer
Flight distance : 116736 ft
United States
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El Diabolico Posted at 7-23 07:29
That was the case in the past BUT in more recent years, with DSLRs and now mirrorless, more and more companies have switched or added to their selection optical grade acrylics (Hugyfot, Ikelite, Nauticam, Sea & Sea, etc.) for the reasons I’ve mentioned. Also don’t forget, that normally, domed ports have a lens hood that can protect from impact and in the case of flat ports, a filter thread for an additional layer of protection.
The point is that 60mm is by no means too large for a glass port. Standard Nikonos lenses are exactly the same diameter as the Osmo port and they have always been glass. You raise another good point - even a raised rim, as in the case of a filter ring, provides a little protection for a glass port but the Osmo case has nothing. I am dating myself - my first UW camera was a Nikonos II. |
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