PIX 2015

May as well get this question out of the way ;)

Started Sep 12, 2012 | Discussions thread
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Chris Yates
Regular MemberPosts: 123Gear list
Canon is not a fool
In reply to Gearóid Ó Laoi, Garry Lee, Sep 14, 2012

Canon puts a filter (actually 2) on all its big guns. In the 300mm f2.8, 400 f2.8 500 f4, and 600 f4 etc, the first element is a non-lens element. Also all of the above lenses are designed to use a 52mm drop-in in the rear, and actually not work without one. So the fact that filters degrade quality is total BS. It depends on the quality of the filter, and yes the front element of all the lenses I mention is for protection.

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Canon EOS-1D Canon EOS 650D Canon EF 300mm f/4.0L IS USM Canon EF 100mm f/2.8L Macro IS USM Canon EF 40mm f/2.8 STM +6 more
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