PMA: New Canon 70-200 f2.8 IS USM II?

Started Jan 27, 2008 | Discussions thread
oldfartwitha5d
Senior MemberPosts: 1,427
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Re: Then Canon L is more reliable than God himself
In reply to genotypewriter, Apr 3, 2008

You're right, there is 1 fluorite element in the f4 version, and two UD elements, while the f2.8 has 4 UD elements:

http://www.canon.com/camera-museum/camera/lens/ef/data/telephoto_zoom/2006_ef_70-200_f1.4l_is_usm.html?p=2

http://www.canon.com/camera-museum/camera/lens/ef/data/telephoto_zoom/ef_70~200_28lis_usm.html?p=2

I read somewhere that 2 UD elements are roughly equivalent to 1 fluorite element, so I guess we're still even, though.

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